A lifelong learner
Ever wondered what DAX functions in Power BI are and how they can help you unlock advanced analytics?
In simple terms, Data Analysis Expressions (DAX) functions are pre-built formulas that can perform specific calculations in Power BI.
Using these Power BI DAX functions, you can solve common business problems. These include calculating totals and analysing trends from your data.
In this blog, I will break down how to use DAX functions in Power BI for your needs. This will allow you to streamline your reports and make complex calculations easier and effortless.
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Power BI has proven itself to be a very powerful tool for categorising raw data. Many global businesses use it for advanced business analytics.
But even today, I observe many Power BI users struggling to uncover deeper insights from their data.
This is mainly because they have yet to master the powerful applications of Power BI DAX functions.
Are you such a user who is struggling to move past the beginner levels of Power BI reports? I am here to help you understand how using DAX (Data Analysis Expressions) can address this issue.
In this blog, I will show you how you can make the most out of DAX functions in Power BI using practical examples.
These are shortcuts that you can use to streamline common data tasks.
Using Power BI DAX functions, you can:
In my experience, using DAX functions in Power BI is the fastest way to unlock meaningful analysis.
They help in moving beyond basic reporting and derive actionable insights from your data points.
You may be wondering, “Can’t I just use Power BI’s built-in visuals?”
But if you are looking to unlock deeper analysis with more insights, you will need to use Power BI DAX functions.
These functions remain essential as they provide:
Without DAX functions, you are limited to visualising only what is readily available from your raw data using basic Power BI features.
Understanding the different categories of DAX functions can help you choose the perfect tool for each task:
Scenario: Calculate the total sales revenue from your data.
Total Sales = SUM(Sales[Revenue])
What it does: Adds the values in your Revenue column of a typical sales table.
You can use this function to specify the exact data DAX uses for the calculation.
Scenario: Only calculate the sales of the “Electronics” category
Electronics Sales = CALCULATE(SUM(Sales[Revenue]), Products[Category] = “Electronics”)
What it does: Sums the specific revenue of Electronics by only including the rows of that particular product category.
Useful for Year-to-Date calculations, providing useful insights for the entire financial year.
Scenario: The overall sum of your year-to-date sales
Sales YTD = TOTALYTD(SUM(Sales[Revenue]), ‘Date'[Date])
What it does: Calculate the running total of every sale from January 1st to your report’s current date.
This provides conditional logic to your calculations. Using these, you can compare different values and mark them as better or worse than others.
Scenario: Categorise your products as “High” or “Low” based on their performance.
Performance Category = IF(Sales[Revenue] > 1000, “High”, “Low”)
What it does: Returns the value as “High” if revenue exceeds 1000. Otherwise, the value will return as “Low”.
Now that you know the basic functions of DAX in Power BI, let’s learn how to combine multiple functions.
These can help you solve complex problems in a single DAX formula without using external data sources via Power BI connectors.
Sales LY = CALCULATE(SUM(Sales[Revenue]), SAMEPERIODLASTYEAR(‘Date'[Date]))
Growth % = DIVIDE([Total Sales] – [Sales LY], [Sales LY])
Use case: This formula will compare current sales with the same period last year to calculate overall percentage growth.
Customer Tier =
SWITCH(
TRUE(),
[Total Spending] >= 5000, “Platinum”,
[Total Spending] >= 2000, “Gold”,
[Total Spending] >= 500, “Silver”,
“Bronze”
)
Use case: Categorise every customer on the basis of their total spending.
These examples show just how versatile Power BI reports can be once you understand how to use DAX formulas.
Using these functions, you can solve real business problems within your reports in a fraction of your current time.
Just make sure you double-check your formulas and avoid the common mistakes shown below.
Using DAX in Power BI is not an easy feat, especially if you are a beginner.
It has a steep learning curve and can lead to tiny errors that can mess up your entire visualisation.
Make sure that you don’t repeat the common mistakes listed below:
So what is the best way to avoid these issues? I recommend that you start by using simple Power BI DAX formulas and gradually advance to complex equations.
Mastering your DAX functions journey in Power BI can provide incredible results.
You can gain useful insights and data visualisations while saving considerable time building your reports.
Just make sure that you remember these key steps:
Begin your learning journey with basic DAX functions like SUM, AVERAGE, and COUNT.
Master the CALCULATE function to ensure that you are providing the right context in your formulas. This will clearly mention what values DAX needs to calculate from your table.
You should regularly use time-based functions like TOTALYTD, TOTALQTD, and TOTALMTD to calculate large amounts of data without making your formulas longer.
Once you have practical experience with the basics, you can start combining multiple DAX functions in the same formula.
The Power BI DAX functions list may seem very long and difficult to understand.
But don’t worry! Speaking from experience, you will mainly use the same 10-15 functions for most of your work. The rest of the DAX functions are very use-case dependent and will rarely need your attention.
Still, if you are facing issues or confusion, you can always consult an expert to help with your understanding.
Learning how to use DAX functions in Power BI on your own can be quite scary.
There will be times when consulting an expert is the right choice.
I recommend working alongside a data visualisation specialist when:
Experienced data visualisation experts from Augmented Systems LLP can help you build solutions and train your team. Our experts can also collaborate with you to identify the best DAX functions in Power BI for your business needs.
Established in 2020, Augmented Systems has cemented itself as a pioneer of business intelligence and cloud development. We excel at leveraging technologies like DAX functions in Power BI to enhance your daily workflow.
Connect with our team today, and we can help you understand advanced DAX Functions that will bring the best out of your Power BI reports!
Microsoft’s documentation and community forums offer extensive DAX examples in Power BI. Practice with your own business data for the best learning.
With regular practice, you can learn the essential Power BI DAX functions in a few weeks. Mastery comes with continued application to real problems.
Understanding DAX functions in Power BI is a crucial skill for a data visualization specialist, but you’ll also need expertise in data modeling, design principles, and business analysis.
Work with your own business data. Start by recreating the DAX examples in Power BI from this guide, then modify them for your specific needs.
As one of the more advanced data visualization and analysis tools, using Tableau can be challenging at first.
And to truly master Tableau and make the most of it?
You will need to understand how its functions work!
Tableau functions are like Excel formulas: they work inside Tableau’s data editor and help you perform complex calculations in seconds.
More importantly, they will help you clean and segment data so that you can use it to create visualizations that actually help you make smarter decisions!
In this blog, I am going to give you a data visualization consultant’s Tableau functions cheat sheet.
It’s a selection of 10 functions that you can use to both simplify and enrich your Tableau data visualization experience.
Let’s get started!
Tableau functions are pre-built formulas that help us perform complex calculations without any manual heavy lifting.
In my experience, they are extremely important for three reasons:
The best way to understand this is to consider Tableau as a toolbox and the functions as individual tools that allow you to get the job done!
To use a Tableau function, you will have to add it to a calculated field following a pattern such as this one:
For example, if you enter the following function:
Tableau will calculate the average of the Profit data field and round the result to 2 decimal places.
With this simple Tableau function, you can extract one part of the following data:
So, if you need to group your sales data by the quarter or any specific time unit, this is the function you will need to use!
For example, let’s say you need the details of every sale you made on 7th January, enter the function in this format:
This function can be very helpful if you need to recall faulty products or understand sales patterns over specific dates, like the 4th of July!
Next up, we have one of my favorite functions: date truncate.
It helps you standardise your data to a “nearest point.”
So, if you want to find out all the purchases you made in the second quarter, this formula will reduce every entry from April to May to “1st April 2025.”
Here’s the function you can use to do this:
With this function, Tableau will go through the entire datasheet and add the relevant date to each entry!
Data difference is a very simple and basic function.
It calculates the difference between two given units in your dataset.
However, it is also handy because you can use it to calculate things like the difference between the order date and shipping date for an entire dataset!
Here’s the formula for this function:
For example, to calculate the number of days it took to ship every order in your data set, just enter the function:
As I said, a straightforward but also extremely useful function!
If/then/else is one of the most important functions in Tableau.
With it, you can define conditional logic that operates on the following basis:
The most common use case for this function is to segment data into different categories.
For instance, you can use it to differentiate between every deal where you earned a profit vs. every deal on which you lost money.
Here’s an example of this function:
Similarly, you can use it to define your own conditional logic.
To do this, just substitute the fields following the operators (If, Then, and Else) with the logic or condition you want to specify.
Next up, we have a Tableau function that builds on the If/Then/Else formula.
That is because it helps you specify more than one condition in your if/then/else statement.
Simply put, it allows us to break down complex statements into much cleaner formulas.
For example, you can use a function like:
Based on this formula, Tableau will segment your data into entries based on East, West, and “Other” regions!
This function is also very important if you want to create Tableau dashboards for specific regions, products, or teams! It will help you quickly separate and organise data into different fields.
Also Read: Top Tableau Dashboard Examples for 2026
ISNULL is one of the most important formulas on my Tableau functions cheat sheet.
Its job is very simple: to help you find any missing or empty fields in your dataset.
For example, let’s say you want to find out the difference between the sales for two sets of products:
The first thing you will need to do is separate the two products.
That’s where you can use ISNULL!
Just enter the following formula:
And it will return “TRUE” for every transaction or entry on your dataset where the “Discount” field is blank!
Contains is basically the same as pressing Control+F on your keyboard.
It helps you find all those strings on your data sheet that have a specific substring containing the combination of letters and numbers you have mentioned.
It can be your go-to for filtering records based on partial matches.
For example, if you enter the following function:
Tableau will flag all customer queries that mention the word “Urgent”!
Find is similar to Contains: both of them help you filter fields on your sheet.
But find is for exact matches, whereas Contains is for partial matches.
So, if you want to find all the transactions involving a specific serial number, just enter the following formula:
And Tableau will find all the products with the serial number you’ve entered!
One innovative use of this Tableau function is to create a “cluster” of customers who are purchasing the same product and compare their other purchases!
The last two entries on my list are both LOD functions in Tableau.
You can think of them as mini calculations that you can ask Tableau to perform on the data that underlies your visualizations.
For example, say you are viewing the visualization of your sales data for the last year, and you notice a specific customer’s entry.
Now, if you want to know their lifetime value, all you have to do is enter:
In return, Tableau will find all the transactions associated with the customer and tell you their lifetime value!
Another LOD expression you could end up using very frequently is Include.
Let me show you how it works by contrasting it with the FIXED function we saw above:
For instance, if you are looking at the sales data for 2025 and you want to know the sales for a specific region, enter the function:
This way, you can get a quick insight into the average sales for a specific region!
Pro Tip: While Tableau’s LOD expressions are pretty good, I have had a lot of success using Tableau alternatives for performing quick calculations within a visualization.
Through this post, I have walked you through 10 of the most useful and commonly used functions in Tableau.
Now, the only thing you need to do is find out if they work like they are supposed to!
And if you run into trouble?
That’s where we at Augmented Tech Labs come in!
As a leading data visualization consultant based out of India, we have been working with Tableau and clients who use it for the past 2 decades…
And we can help you troubleshoot common Tableau problems, whether they lie in the underlying dataset or in the specific formula you need to use.
So, whether you want to solve a recurring Tableau functions error or find more formulas you can use to make data-driven decisions, why not connect with us?
We will help you make the most of your data and Tableau’s capabilities with our expertise!
Tableau’s own online help is the best cheat sheet, where it lists every function with examples. But if you want to create a tailored cheat sheet, I recommend working with a data visualization consultant like Augmented Tech Labs!
All you need to do is open the calculation editor and start typing! Tableau will suggest functions as you type. The key is knowing the basic patterns, like FUNCTION(Argument).
My suggestion: use LOD expressions when your question is about a different level of detail than your chart shows, like “average sales per customer” in a monthly sales report.
Power BI is one of the best data visualization tools on the market.
But what is it that makes Power BI such a popular tool?
There’s the cost: it’s cheaper than most other tools like Tableau.
There’s also the connectivity: it’s a Microsoft tool, and so the go-to data visualization software for most Microsoft users.
But there’s also another feature that makes Power BI actually easy to use for everyone, from data visualization consultants to everyday users to beginners:
Power Query.
In this blog, I’m going to tell you what it is, explain what it does, and walk you through 5 of its best features.
I’ve also answered some important FAQs at the end to help you clarify some concepts, like the Power Query editor in Power BI.
Let us dive in!
Power Query is Power BI’s native Extract, Transform, and Load engine built on the M language programming framework, whose job is to help you prepare data for visualization in Power BI.
But what exactly does all this mean?
Think of it like this: if your data visualization (like a Power BI dashboard) is the finished meal, Power Query is the kitchen where you prepare the ingredients for it!
Simply put, it helps you extract data from sources like:
Once you’ve extracted the data, you can transform it:
The last job of Power Query is then to help you load the data into Power BI. This happens via its native and deep integration with Power BI itself!
Also Read: Power Query Excel vs. Power BI – Which is Better?
To understand how to use Power Query in Power BI, let us take a small example:
Let’s say you’re a sales manager and have two sales reports:
In this case, you can use Power Query in Power BI to:
And, finally, you can load the table straight into Power BI Report Builder to create your first report!
In this section, I want to give you a quick overview of the 5 most common features that you might have to use at the beginning of your Power Query journey:
This will probably be the feature you use the most.
Its task is simple: to help you bring data from several different sources into one table.
Let’s take one of the simplest Power Query in Power BI examples to understand this:
Say you have two (or more!) tables with the same type of information: Sales-January, Sales-February, and so on.
You can use Connect & Combine to stack them into one long table! This is what we call the Append function.
But what if the two columns you want to combine aren’t of the same type?
In that case, you can use the Merge function. For instance, you can take two different tables, like:
And merge them based on the common field: Customer IDs!
However, the two tables will definitely have to be related to each other in some way, i.e., by at least one common field!
This is the function that helps you fix common errors and organise messy information in your datasets.
So, how exactly can you use it?
Most of the Clean & Shape Queries are one-click functions that you can use to:
This way, the Power Query editor in Power BI helps you save time and clean your data so that your data visualization process remains as simple and smooth as possible!
Next up, we have a very interesting Power Query function: Pivot and Unpivot.
And its name holds the key to understanding it:
It helps you convert rows into columns and columns into rows!
Let’s quickly see how Power Query does this:
For example, if you have a list of sales in one column and the months in the next column, it will make different columns for each month.
This way, you will have a month-wise sales table!
Let’s take the same example here: say you have a wide list of sales by month. Clicking Unpivot will consolidate it into a tall list!
This function is very important because it helps you organise data such that it is ideal for:
This is one of my favorite functions: it automatically detects the kind of data in a given column.
So, when you first scan a file using Power Query, it will automatically assign a small icon next to each column:
Now, Power Query is not perfect. So, the detection might not be accurate every single time.
But the good part is that you can manually change it in case the auto-detection isn’t accurate.
One reason this is crucial is that without the correct description for each column, you won’t be able to apply the relevant filters.
For example, Power Query will let you filter only the “date” column by month or the sum function for the “currency” column.
So, if you want Power Query to automatically show you the relevant filters that should be applied to each column, you must either use Auto Detect or label the columns manually!
Lastly, we’ve got Applied Steps.
Here’s how it works: it automatically saves and lists every single step you’ve taken in the course of cleaning your data.
Let me show you one example of what it does:
And here’s the best part: you can delete one of the steps to undo that specific action without affecting the later steps!
That was a lot of information!
And if you’re a beginner, things can get very confusing…
So, let me quickly recap the key points we’ve covered:
Power Query in Power BI is the native extract, transform, and load engine.
It helps you gather data from different sources, clean it with a lot of different “queries”, and load it straight into Power BI for data visualization.
Now, it’s time for you to take your first step into the world of Power BI by using Power Query to clean a dataset for visualization!
And if you get stuck?
Not a problem: reach out to us at Augmented Tech Labs – one of India’s leading data visualization consultants!
From learning how to use Power Query to creating a complete data visualization infrastructure, we can help you leverage the full capabilities of Power BI, one step at a time…
The Power Query Editor is the dedicated window inside Power BI Desktop where all data cleaning and shaping happens. It’s where you access the tools we’ve explored in the blog and see your “Applied Steps”!
Absolutely: you can use the Power Query Editor for transforming data on the Power BI Service. This wasn’t the case earlier, when it was only available on Power BI Desktop. But it is not available on the Power BI Service as well.
No, you won’t need to write a single line of code to use Power Query. Most transformations use a graphical, “point-and-click” interface. However, advanced users like data visualization consultants and analysts do have the option to write custom formulas in M language.
Tableau is a popular tool used by many businesses for data visualization. Using its powerful tableau features, people can derive valuable insights from their data.
This blog lists the top 15 Tableau features that you can use to convert raw data into business intelligence.
From fundamentals to advanced AI features, we will explore how you can use Tableau to make data analysis easier.
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Data can only be as powerful as your understanding of what it represents.
Merely storing raw data in spreadsheets does not mean you can gain any valuable insights from it.
This is why understanding Tableau’s powerful features is essential for using your data more effectively.
Using key Tableau features, you can turn complex data points into interactive showcases.
It will also help you save time by automating various steps in your workflow.
To help you better understand, I will walk you through the best Tableau features you can use today.
Let’s begin!
Read our dedicated blog on various Tableau dashboard examples to better understand how its features are implemented.
Confused about what a particular data point means in your table?
Clear your doubts by using Explain Data. It is precisely what it sounds like.
Using AI, this feature explains the relationship between a particular data point and the rest of the table.
Explain Data also allows you to create visual representations of data trends from the table.
This will help you understand the data in a more engaging manner.
So how do you use it? Right-click on any data point and select the option “Explain Data”.
Tableau then automatically analyzes the data point (or points) you selected and shows why they are significant within the table.
Benefit: Provides AI-driven answers that can save you hours of manual investigation.
Example: A retailer clicks on a sudden spike in a store’s sales. Using Explain Data, they can identify the specific promotion in a particular region that led to the spike.
Accelerators are ready-to-use dashboard templates that can help you reduce your work considerably.
Think of them like pre-built worksheets in Google Sheets that let users quickly start logging their work.
These accelerators are a great way to save time. They enable you to access the format you need, ready for immediate use.
Benefit: Accelerators can significantly shorten your time-to-insight.
Example: A marketing team uses the ‘Web Traffic Accelerator’ to immediately start monitoring the performance of their campaign without building a new dashboard.
Confused about what the insights stand for on your dashboard?
Data stories can help you generate helpful narrative insights in plain English.
Data stories are summaries that explain what the boring numbers on your worksheet actually represent.
This can help other non-technical team members to realize what your data indicates.
Benefit: Makes insights generated from data easier to understand for everyone.
Example: An executive uses Data Story to generate an automated summary of their insights. They then use it to make other team members understand what the data represents.
Level of Detail (LOD) is a term that enables you to perform complex calculations based on different demographics.
Using LOD Expressions in Tableau, you can fine-tune how specific your analysis is and what details are included in the output.
This is an advanced feature that can help you perform calculations at the source level of your data.
Benefit: Can solve sophisticated analytical questions, like calculating a customer’s lifetime value on a Tableau view showing your monthly sales.
Example: An analyst uses LOD Expressions to calculate average sales per customer while the view is on product categories.
Hyper is Tableau’s high-performance data engine technology.
This is what powers quick queries and fast dataset loads in your Tableau project.
It also enables rapid analysis of millions of rows of data.
Benefit: Powers real-time insights from extensive, complex data sets with minimal lags.
Example: An analyst connects their dashboard to a billion-row dataset, and Tableau remains responsive due to Hyper.
Bins allow you to group collective measures, such as age or revenue, into discrete time intervals.
This allows you to create eye-catching histograms and analyse data patterns.
Benefit: Simplifies how you analyse continuous data by creating helpful groups.
Example: A retail manager groups their customer data into specific age ranges (20-30, 30-36, etc.) for easier categorising.
Using Image Role, you can directly import and use your images in your visualisations.
It lets you map your images as data points in the Table. This makes your visualisations seem more attractive and descriptive.
The best part?
Since the actual image file is still stored externally, your workbooks remain ultra-responsive.
Benefit: Creates a more visually engaging dashboard.
Example: An e-commerce dashboard can display actual product thumbnails next to annual sales figures using this feature.
Keep Only might seem like a simple filter tool.
But when used correctly, it can change the way you analyse specific data points.
Using Keep Only, you can target a particular data point (mark) and zoom into the view to show only the marks you selected.
It can help you filter the entire dashboard to show only the specific marks you selected.
Benefit: Allows intuitive exploration of data points across the dashboard.
Example: A logistics manager clicks on the top-performing product in a chart and uses “Keep Only” to check its performance across both logistics and marketing data.
Catalog is a very integral data management feature in Tableau.
It automatically documents multiple data assets, such as tables, columns, and workbooks, in a central inventory.
This can help you show exactly where the data you are showcasing came from and how trustworthy its source is.
Benefit: Used to build trust in the validity of your data by providing a visual representation of its source and quality.
Example: A user can use the Catalog to track a data source and whether it was flagged for quality before using it in a critical report.
Using this tool, you can schedule, run, and monitor your Tableau Prep data cleaning.
This can help you automate workflows in both Tableau Server and Tableau Cloud.
Benefit: Ensure your reports are based on the most recent data points.
Example: A quality officer uses an automated flow to clean the previous day’s data every night.
Dynamic Parameters are continuously updating values that can change automatically.
Using a dynamic parameter, you can designate numbers or values that change depending on other external values.
For example, you can create a parameter that automatically updates the current date in your visualisation.
This allows you to enter values, such as data or numbers, that can change the visualisation on its own.
Recent updates to the Tableau platform have made these parameters even more powerful. For example, they have introduced dynamic spatial parameters for maps.
Benefit: Creates interactive scenarios that can change depending on user-based conditioning.
Example: A sales manager uses this feature to adjust a “Target Revenue” parameter. This lets them see which sales reps are above the required threshold to meet the target figure in real time.
Brand consistency is very important to maintain in any organisation.
Tableau’s custom theme features let companies apply a specific color and font to all workbooks.
Benefit: Apply corporate branding and formatting to all workbooks for added uniformity.
Example: A brand manager applies the company’s official brand theme to all Tableau reports for added workbook consistency.
RMT is mainly used as an administrative tool.
It allows collecting data from your dedicated Tableau server to check its health and performance.
Using RMT, you can diagnose common issues and errors, such as slow loading times and visual irregularities.
Benefit: Ensures a smooth, reliable experience across all Tableau dashboards.
Use Case: An IT admin uses RMT to troubleshoot why a server process is slowing down dashboards for all users.
Looking for a better workflow? Tableau offers its own handy integration with Slack.
This allows you to send automated data alerts and share your dashboards directly in Slack channels.
Benefit: Allows you to put your insights directly into your current Slack workflow for better team collaboration.
Use Case: An account manager uses this integration to automatically post a daily KPI summary on the company’s Slack channel.
Your data in Tableau can sometimes be quite confusing to understand.
Have questions? Why not ask your data directly!
Ask Data lets you get easy-to-understand answers by creating inquiries for your data.
Think of it like doing a Google Search, but on the data present inside your workbook visualisation.
Benefit: Makes data exploration very easy and less technical for uninitiated users.
Example: A business manager uses Ask Data to search for targeted sales for a particular area.
Tableau has amazing undiscovered features that can make your data more dynamic and easier to visualise.
Such Tableau features can help you gain deeper insights from your data.
It can also reduce the time it takes to visualise your data by automating your slower manual methods.
However, implementing these features effectively will require expert assistance.
This is where working with a data visualization consultant from Augmented Tech Labs can prove valuable.
Partnering up with a dedicated data visualization consultant can help you tailor Tableau features to your needs.
Consult our experts today and use advanced visualization to draw meaningful insights from your data.
Beginners should start with Ask Data, basic dashboard interactivity (filters and highlighting), and the drag-and-drop interface. These core tableau features provide immediate value with a low learning curve.
Follow the official Tableau blog and product announcements to learn about the latest Tableau features. The “What’s New” section in the product and community forums is also a great resource.
Practice with your own data is the best method. Tableau Public offers a free platform to explore how others use these Tableau key features.
A data visualization consultant is helpful when you need to scale your analytics, build complex data models, or train your team to use advanced Tableau features like LODs and data modeling effectively.
Advanced Tableau AI features, like Tableau Agent, are often part of newer offerings and may require specific licensing. Check Tableau’s website for the latest details.
Data Analysis Expressions (DAX) is a popular formula language that enables custom calculations in Power BI.
Using DAX, you can extract new information from the data that is already present in your model.
Need help in creating your own business metrics and calculating growth indicators? DAX can help you with that as well.
In this blog, I will explain what DAX is in simple terms. I will also show you how to create your own DAX formula in Power BI.
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Whether it’s Google or Tesla, most successful businesses around the world are now entirely dependent on data for their daily functioning.
Understanding your data has become more critical than ever to stay one step ahead of your competition.
But to make smarter choices using your data, you need to go beyond just raw numbers.
You need tools that can help you answer complex questions using your data.
That is where DAX in Power BI comes in! It enables you to obtain deep insights from your raw data.
Want to learn how? Read the guide below, which includes detailed tutorials on what DAX is and its various functions in Power BI.
By the end of this guide, you will learn how to unlock the full potential of DAX in Power BI.
Let’s dive in!
DAX is the formula language of Power BI. It is what makes doing complex calculations in Power BI possible.
So what is it? In essence, DAX is a collection of operators, functions, and constants.
Think of DAX as a simple math problem you give to Power BI to get the result you need in your table.
DAX is a versatile tool that can be used to:
I use DAX daily to create powerful data visualizations from my Power BI reports. It has helped me move beyond doing simple sums and counts in my tables.
Want to learn how DAX can help you? Let’s start by exploring it’s key features:
Key Features of DAX
Here are some of the best features that DAX can unlock for you in Power BI:
The characteristics above show just how powerful DAX is for analyzing data in Power BI. It might take you some time to master it, but its payoff is truly worth it when you create a Power BI dashboard.
Why is DAX so Important?
You are probably wondering, “Why can’t I just build charts without using DAX in Power BI?” Technically, you can. But your charts will never have the same depth and clarity as visualisations built with DAX formulas.
DAX can help you:
Thus, using DAX in Power BI can significantly improve your data analysis.
In many ways, DAX in Power BI is similar to using formulas in Excel. However, there is a key difference between these two features:
This is why a simple formula using DAX follows a format like:
Total Sales = SUM(Sales[Revenue])
While an Excel formula for the same purpose would look like:
Total Sales = SUM(B2:B10)
Core Concepts of DAX: Syntax, Functions, and Context
To better understand what DAX is in Power BI, you need to understand these three concepts:
1. Syntax
This is the base structure of every DAX formula. Syntax shows the relationship between two or more variables in the formula.
Example: Profit margin = SUM ( financials[Profit] ) / SUM ( financials[Sales] )
2. Functions
These are the verbs in DAX that help describe the action to be performed:
Context specifies exactly what the user needs to include in the formula during the calculation. DAX works by understanding which data you are pointing to, so it can calculate the correct values taken from your table.
The two main types of contexts are:
Example: In the formula USA Profit Margin = CALCULATE ( SUM ( financials[Profit] ))
Here, CALCULATE is a filter context, and [Profit] is a row context signifying the exact row of the table.
Common and Useful DAX Functions
Let’s look at primary functions in DAX that you are likely to use regularly:
Example: Total Revenue = SUM(Sales[Revenue])
Example: US Revenue = CALCULATE(SUM(Sales[Revenue]), Sales[Country] = “USA”)
Excited to start using DAX in Power BI?
Let’s make things easier by first understanding how you can measure values using DAX in Power BI.
For this, we will use an example scenario that demonstrates how to use DAX to calculate the total and average sales for a report.
Great work! You have now completed the first step towards learning how to use DAX in Power BI. Now let’s learn about other DAX variables you can use in Power BI.
As formulas continue to grow, your workflow may get cluttered. Power BI DAX Variables can make them look cleaner.
For example:
text
Total Profit YTD =
CALCULATE([Total Sales] – [Total Cost], DATESYTD(‘Date'[Date]))
text
Total Profit YTD =
VAR TimePeriod = DATESYTD(‘Date'[Date])
VAR TotalProfit = [Total Sales] – [Total Cost]
RETURN
CALCULATE(TotalProfit, TimePeriod)
Using DAX variables in Power BI can thus provide a more refined look to your tables. It can help you understand clearly what each line of the formula represents.
When Do You Need Professional Data Visualization Services?
This is just the beginning! Learning DAX in Power BI can be quite difficult for advanced use cases like Time Intelligence and Dynamic Segmentation.
This is where an expert can help make your learning journey easier.
Consider opting for professional data visualization services when:
An experienced provider of data visualisation services can help you build the right solution.
They can also help train your team in using DAX for advanced reporting.
Final Verdict: Unleashing the True Power of DAX
In this blog, I have helped you understand the basics of DAX and the required beginner steps of this journey. But implementing this in real-world scenarios to solve Power BI issues can pose serious challenges.
Luckily, you can always reach out to our experienced team at Augmented Tech Labs!
We have helped many leading enterprises build their own DAX-based models using Power BI.
Connect with us today, and we will help you understand the next steps in how you can use DAX to streamline your next project!
FAQs
The main use of DAX in Power BI is to create custom calculations and business metrics that are essential for advanced analysis.
2. Is DAX in Power BI similar to SQL?
They are quite different in practice. DAX in Power BI is for analyzing data within a model, while SQL is for database querying.
The best way is to start using DAX on your own. Begin with simple measures and follow a Power BI DAX tutorial to understand context.
4. Can I use DAX in Power BI without coding?
Yes, but only for the basics. Advanced DAX in Power BI requires logical thinking and practice, alongside an experienced software partner to help you along the way.
5. Why are my DAX in Power BI measures slow?
Slow measures in DAX in Power BI are often due to a poor data model. Using Power BI DAX variables and our recommended practices can help boost your measures significantly.
Data visualization is not new.
Its techniques may have changed over time to accommodate more and more data, but the basic principle has remained the same, and can be dated back to at least 3 millenia.
For example, a painting is a visual depiction of qualitative data – the feeling of a population destroyed by a pandemic or the victory of a king crossing the Alps.
However, even data-based visualizations are not new: the oldest known data visualization is the Turin Papyrus Map – a map depicting the quantity of minerals (including gold) around Egypt.
And here’s the thing: this map is from around 1,150 BCE – more than 3,000 years ago!
In this blog, I’m going to walk you through 11 of the best data visualizations: each using a different data visualization technique to tell a story as simply as possible.
The 11 effective data visualization examples I’ve chosen depict different things at different times and at different points. But one thing brings them all together: they make optimal use of the data visualization technique that they are using.
Let’s explore them in more detail:
1. The Best Simple Bar Graph
First up, we have a simple and elegant bar graph.
It depicts more than four variables: famous writers, the types of works they produced, the number of works they produced, and the accolades they won.
But all of them at a single glance!
There are three things that make this simple bar graph one of the best data visualization examples.
First, it inverts the axis such that the bars appear on the Y-axis instead of the X-axis. It tells us that we can adjust a graph according to the data we need to present.
Second, it uses colors very well: this helps us contextualize the achievements of different authors. In other words, it helps understand the data better.
Third, it uses stars on the right as an added parameter.
Simply put, this bar chart uses all the data visualization components in the right way and shows us why even the most basic of charts can have innovative applications!
Next, we have an innovative application of line charts on a completed dataset.
What you see below is the finishing order of every single participant in a Formula 1 Grand Prix held in Austria in 2021.
On the left is the starting order, on the right is the finishing order, and every driver has a line that depicts their progress throughout the race.
This line chart is a remarkable example of data visualization for a couple of reasons.
First, it shows a lot of information in a very small graph: it tells the race story of every single driver through 71 laps of the race.
Second, it uses the colors that every racing team uses itself. This makes the graph very easy to read and follow. For example, the light greens represent the Mercedes drivers.
So, with just a brief glance towards the right, you can see that the team finished 2nd and 3rd in the race.
3. Informative Bubble Chart
Below, we have a great example of a Bubble Chart.
It shows the world’s top 50 websites ranked by the number of users or visitors it has.
Apart from the bubbles themselves, which clearly tell the main story, you also have a great color combination for the top websites.
However, this bubble chart makes one of the most common data visualization mistakes to avoid.
That is, it doesn’t use similar colors for similar types of websites: red for search engines, blue for social networks, yellow for e-commerce websites, etc. Using consistent colors could have made this bubble chart even easier to read.
This goes to show that even the best of creators can use some help from data visualization consultants!
4. Best Infographic
Infographics are notorious for being too lengthy, and the one I’ve selected doesn’t disappoint!
It shows the history of pandemics from the 1st century AD all the way up to the 21st century.
This infographic is a product of the COVID-19 pandemic: a result of our need to contextualize the pandemic that affected our lives, but in the age of data visualization.
It uses colors, years, and differently sized bubbles to depict diseases, time, and the scale of the deaths caused by pandemics over 2,000 years in one snapshot.
You can think of it as our equivalent of a painting created in the 14th century depicting the black death.
5. Alluvial Chart
Next, we have an alluvial chart.
The purpose of alluvial charts is to show us two things: the whole quantity and the proportion occupied by specific elements within it.
What you see here is the number of people who have migrated to the US from different countries since the early 1800s. On the right are numbers, going up to 10 million a year.
While it might be confusing to match the numbers with the curving lines, the colors do a fine job of saving the day: all you have to do is see the color of the country and match it with the waves depicting the numbers that flow towards the right.
So, you can clearly see the mass wave of Italian immigration dominating total migration to the US in the late 19th and early 20th centuries. This visualization is also one of the best examples of how to use data visualization best practices to effectively communicate the story of your data.
With the help of some expert data visualization services, you can make a similar chart showing the sales of different products your company has offered over the years!
A donut chart is like a pie chart with a hole in the middle.
As you can see below, it is great for depicting the distribution of a whole quantity.
We can clearly see the average caloric distribution of the average person, divided into different colors for the source of the calories.
What’s interesting is how we can use the same donut chart to understand the caloric sources for different countries around the world!
7. World Population Area Chart
Below, we have what is probably the best example of an area chart.
It uses the image of a globe to show the distribution of world population among the different countries.
As you can see, it also uses bounded areas that are proportional to the country’s population.
Plus, what’s great is that countries that are closer together are also placed near each other on the map, making it easier for us to identify and contextualize the data.
8. Florence Nightingale’s Coxcomb Chart
One of the oldest examples of data visualizations is Florence Nightingale’s Coxcomb Chart.
Nightingale, a politician in the United Kingdom, used it to show the number of preventable deaths that occurred in the Crimean War.
This data visualization is an example of a radar chart: the slices all have equal width, but varying radii.
As a result, you can use the radii to show the different magnitudes of the same data in the same chart.
9. Line Chart Depicting Chip Prices
Next up, we have another line chart.
It tracks the correlation between the price of Ethereum and Graphical Processing Units that are used to mine the cryptocurrency.
This chart also tracks the value of CPUs as opposed to GPUs against the mining of Ethereum units.
You can use this type of line chart to understand how much you might have to pay for the supply of your raw materials.
But that’s not all: you can also use data modeling with such charts and the underlying data to anticipate price changes for the main raw materials you use.
10. Supply Chain and Manufacturing Dashboards
Building on the last chart, we have an executive dashboard for supply chain management.
It gives you a snapshot of your entire supply chain at a glance.
On the left, there is the date range, followed by a breakdown of shipping timelines in the center, and late deliveries highlighted on the right.
At the bottom, you can see the shipment status of all the orders within the given date range.
This dashboard is also one of the best interactive data visualization examples: you can link it with your supply chain management software.
This will ensure that you always see the latest information updated in real-time.
11. Interactive Sales Dashboard for Business Executives
The last example shows us that the use of data visualization is becoming more and more important for businesses.
Whether you are an SDR, a revenue professional, or an executive, it gives you a visual snapshot of the state of your operations.
For example, below we have a sales dashboard that shows:
All of this in one dashboard that can be updated in real-time when integrated by your data visualization consultant with your CRM!
Augmented Tech Labs: Your Perfect Partner for Data Visualization
Through this blog, I’ve walked you through the best data visualizations that tell stories using simple lines and shapes rather than words.
From the world of sports to the state of the world population, we have seen bubbles, donuts, lines, and bars being utilized to break down complex data and communicate it as easily as possible.
So, if you too want to use the power of the best data visualization techniques available to tell the story of your data, all you need is the right tools.
These include a data visualization tool or a data visualization consultant.
And that’s where we at Augmented Tech Labs come in!
We have both the experience of working with the best data visualization tools on the market and the expertise it takes to convert complex data into easy-to-understand images.
Connect with us today for a free consultation to find out how we can help you tell the story behind your data!
Yes. Creative data visualization examples include interactive sales dashboards and innovative race progress charts. These turn complex performance data into an easy-to-understand visual story.
Effective data visualization examples tell a story simply. They use techniques like bar graphs, bubble charts, and alluvial diagrams optimally to make complex data instantly understandable.
Yes, our data visualization services include creating interactive data visualizations like real-time sales dashboards that integrate with your CRM for live business insights
Cognos and Power BI differ across five key features:
In this blog, I will break down the differences between Cognos and Power BI, and help you pick the right BI tool for your business.
In today’s data-driven landscape, choosing the right BI tool is crucial.
And both Cognos and Power BI are powerful business intelligence tools. 93% of Power BI users recommend it for self-service analytics, while Cognos dominates enterprise reporting.
So, if you need to know more about how they are different from each other before you can decide which one to choose, I’m here to help!
In this blog, I’m going to walk you through the key differences between Cognos and Power BI across five specific features.
I have also added a table of differences you can use to get a quick rundown of the key differences, along with a breakdown of use-cases to help you pick the right BI tool.
Let’s dive in!
Here’s a quick breakdown of the key differences between Cognos and Power BI:
G2 Rating: 4.1/5
Best For: Large enterprises and corporations requiring governed, scalable, and pixel-perfect enterprise reporting in a secure, managed environment.
IBM Cognos Analytics is an AI-powered, enterprise-grade business intelligence platform.
It is designed to cater to complex reporting environments. It thus offers very strong governance features and centralized management. Plus, it has highly advanced modeling capabilities, which make it perfect for dealing with large volumes of data.
By using Cognos, you can thus create a consistent and secure data analysis and visualization infrastructure for your organization. Let me walk you through some of its key features.
Cognos is thus one of the most powerful business intelligence and analysis tools on the market. However, you will either need a strong in-house IT team or data visualization consultants to fully leverage its abilities.
G2 Rating: 4.4/5
Best For: Small to large businesses prioritizing self-service analytics, deep integration with the Microsoft ecosystem, and agile data exploration.
Power BI is Microsoft’s cloud-native business intelligence software.
You can connect it to diverse data sources, create interactive reports and dashboards, and share insights with your teams or clients.
It is one of the best BI tools out there if you want to make data-driven decision-making accessible across your organization.
Power BI is my recommendation to all small or medium business organizations, especially those who want to create shareable reports.
To find out more about how it works, check out my complete guide: What is Power BI?.
It depends. Power BI is better for fostering a culture of data exploration and speed. Cognos is better for environments with strict compliance and governance requirements, like finance or healthcare.
Not sure which plan will suit your data analysis and visualization requirements? Here’s a blog I’ve written that breaks down the pricing in detail: Power BI Premium vs Pro.
Power BI for most SMBs and departments due to its low entry cost and predictability. For Cognos to be cost-effective, you’ll need a lot of employees and a strong IT team that can help you make use of its capabilities.
Depends: Power BI should be your go-to if you want a cloud-first or cloud-heavy BI tool. If you prefer or are required by low to maintain on-premise IT ecosystems, Cognos is the one you should choose.
Cognos offers better out-of-the-box AI for business users. However, Power BI is better for organizations already invested in the Azure tech stack and want to leverage custom machine learning models.
Cognos for standardized, formatted document generation. Power BI for interactive, exploratory data visualization and dashboarding.
Still not sure which BI tool is the one for you? No problem: just go through the following scenarios and see which one describes your requirements the best.
If you think Power BI is the tool for your business, here’s a guide to Power BI’s top features you can use to explore its capabilities.
Creating a robust business intelligence analysis and data visualization ecosystem is a two-step process.
First, you’ll need to choose the right BI tool: in this case, that’s between Cognos vs Power BI.
That’s what I’ve helped you do through this blog.
But the second is implementing the ecosystem: customizing it to your needs and training your team to use it.
And that’s where we can help!
As an experienced data visualization service provider, Augmented Tech Labs helps you navigate this journey seamlessly.
Our certified data visualization consultants specialize in both platforms, ensuring you maximize your investment
So, whether you need more help deciding between Cognos and Power BI or a detailed implementation plan + guide, connect with us today for a tailored consultation!
Cognos excels in governed enterprise reporting, while Power BI leads in self-service analytics and Microsoft ecosystem integration.
Engage a consultant when choosing between platforms, implementing complex deployments, or training teams to ensure optimal ROI.
Key Power BI features include: Low-cost entry, an intuitive drag-and-drop interface, Excel integration, and extensive data connectors. These features make it ideal for SMBs.
Cognos’ strongest features include: pixel-perfect reporting, robust governance, advanced data modeling, and AI-assisted analytics within a controlled framework.
Pros: Power BI is affordable, user-friendly, and cloud-native. Cons: It comes with limited advanced formatting, costs scale with users, and lacks enterprise-grade governance features.