Merge pull request #251637 from stevemunk/PowerBI-Visual-Add-a-heat-map-layer-Update-Image

New Screenshot for the article: “Add a heat map layer”

Author: denrea

articles/azure-maps/media/power-bi-visual/heat-map.png

@@ -4,7 +4,7 @@ titleSuffix: Microsoft Azure Maps Power BI visual
 description: This article describes how to use the heat map layer in an Azure Maps Power BI visual.
 author: deniseatmicrosoft
 ms.author: limingchen
-ms.date: 05/23/2023
+ms.date: 09/15/2023
 ms.topic: how-to
 ms.service: azure-maps
 services: azure-maps
@@ -14,7 +14,7 @@ services: azure-maps
 
 This article describes how to add a heat map layer to an Azure Maps Power BI visual.
 
-:::image type="content" source="media/power-bi-visual/heat-map.png" alt-text="Heat map layer in an Azure Maps Power BI visual.":::
+:::image type="content" source="media/power-bi-visual/heat-map.png" alt-text="Heat map layer in an Azure Maps Power BI visual." lightbox="media/power-bi-visual/heat-map.png" :::
 
 Heat maps, also known as density maps, are a type of overlay on a map used to represent the density of data using different colors. Heat maps are often used to show the data "hot spots" on a map. Heat maps are a great way to render datasets with large number of points. Displaying a large number of data points on a map results in a degradation in performance and can cover it with overlapping symbols, making it unusable. Rendering the data as a heat map results not only in better performance, it helps you make better sense of the data by making it easy to see the relative density of each data point.