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What type of visualization is this ? Is it a tree map?
Hi there!
As @mahoneypat said, that's a heatmap.
That particular heatmap you have a screenshot of was created with Vega-Lite using the Deneb custom visual that's in public preview. Though they can be made easily with the matrix visual per the example @mahoneypat provided.
More on heatmaps: A Complete Guide to Heatmaps | Tutorial by Chartio
More on Vega-Lite heatmaps can be found here: Annual Weather Heatmap | Vega-Lite
More on Deneb can be found here: Deneb - Declarative Visualization in Power BI (deneb-viz.github.io)
How I created that heatmap is here: Heatmap with marginal bars | EXPLORATIONS IN DATA STORYTELLING WITH POWER BI (kerrykolosko.com)
Proud to be a Super User!
It's a heat map. With the right measure, you can make a matrix look like a heat map.
Power BI Heat Map: A Custom Visualization Tutorial - Enterprise DNA
Pat
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It is a correlation plot, which tells you the relationship between two attributes on a scale of 0 to 1. You can check the follow Power BI custom visual and also a blog written about how to use it:
https://appsource.microsoft.com/en-us/product/power-bi-visuals/wa104380814?tab=overview