Image Role in Tableau:

The first rule that we are going to discuss is the geographic role. If you have in your data field that contains location information or Geographical areas, then you can assign it to a geographical role in tableau. Based on the type of the location such as City, Country, State, Postal Code. Assigning this extra role can help tableau to plot your data correctly if you are showing Data in map visualization in tableau there are multiple geographic roles as mentioned below but the most important are country Region City and Zip codes.

Tableau give you the space to change the geographic role according to your need. Once you’re familiar with the data

Now let’s talk about the other one that is Image Role this is a brand-new feature in tableau.
Just introduced that in 2022. So, you can imprint the images URLs pointing to images. Then you can assign this field to image role with the URL to show the images in your desired graphs.

But there are some prerequisites.
1. Supported Image extension .png, .jpeg or .jpg
2. URL must begin with .http or .https
3. Image size must be less than 128KB

Now let’s take an example how it can be represent in tableau:
After creating dataset you can set your column as Image role as in below mentioned image The icon will change to Image icon it will help you to understand that this fields belongs to IMAGE ROLE.

You can see Flag Link under Image Role URL option. You can directly put link in subset of data and join with the primary data and you are able to put logos or images in visualization. 

If you are building a dashboard about their producs,category,regions,country it’s really nice to show the relevant image for particular dimensions. You can use different Avatars also to increase the visibility of dashboard Also, it improves the user experience and decrease the time to insight its catchier to have image inside the visualizations.