The dual axis chart is used to visualize two different measures in two different chart types. A date column and two measures are necessary to build a dual axis chart.
The different scales are used in the graph that helps the user to understand both measures. The procedure to create a dual axis chart is given step by step below.
For example, consider a data source such as Sample-Superstore and its measures and dimensions.
Step 1: Go to the worksheet.
Step 2: Hold the Ctrl key in the keyboard.
Step 3: And select the dimension OrderDate, measures Sales and Quantity as shown in the below screenshot.

Step 4: Click on “Show Me” option located on the top right corner of the worksheet.
Step 5: Select the “dual combination” icon, as shown in the below screenshot.

After completion of above all steps, it creates the dual axis chart as shown in the below screenshot.

Tableau Box Plot

The box plot is also called the box-and-whisker plots. They show the distribution of value along an axis.
All box indicates the middle 50 percent of the data where the middle two quartiles of the data’s distribution. On both sides, the remaining 50 percent of data represents by lines called whiskers.
To display all points within 1.5 times of interquartile range, which is all aspects within 1.5 times of the width of the adjoining box, or all points at the maximum area of the data.
The Box Plot takes one or more measures with zero or more dimensions.
For example, consider the data source such as Sample-Superstore and find the size of Profits field for the dimension Category for each ShipMode field values. Below are the steps to create a box plot.
Step 1: Drag the dimension Category and drop into the Columns shelf.
Step 2: Drag the measure Profit and drop into the Rows shelf.
Step 3: Also drag the dimension ShipMode and drop into the right of the Category field in the Columns shelf.

Step 4: Choose the Box-and-Whisker plot from “Show Me”.

The below chart appears that shows the box-and-whisker plot.Automatically Tableau reassigns the ShipMode to the Marks pane.

Tableau Heat Map

The heat map is used to visualize the data in the form of size and color on different measures.
Two different measures are visualized simultaneously using a heat map. One measure is assigned to size, whereas another measure is attached to the color of the heat map.
For example, consider the data source such as the Sample-Superstore and its dimensions and measures.
The procedure to create a heat map is given step by step as follows:
Step 1: First, go to the worksheet.
Step 2: Hold the Ctrl key in the keyboard.
Step 3: Select the dimension Sub-Category and measure Sales as shown in the following screenshot.

Step 4: Click on the “show me” button of the worksheet.
Step 5: And select the Heatmap icon, as shown in the following screenshot.

Step 6: Drag measure Profit and drop into the Color shelf under the Marks pane.

Step 7: Drag the dimension Region and drop into the column shelf.

After completing all the above steps, it creates the Heatmap, which is used to visualize the Sales field and Profit field across different the dimension.

So, this brings us to the end of blog. This Tecklearn ‘How to Create Dual Axis Chart , Box Plot and Heat Map in Tableau’ blog helps you with commonly asked questions if you are looking out for a job in Tableau Desktop. If you wish to learn Tableau Desktop and build a career in Business Intelligence domain, then check out our interactive, Tableau Desktop Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

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Understanding Tableau
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Basic Visual Analytics
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Advanced Charts in Tableau
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Parameters
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