TMap is a drilldownable thematic map visual for Power BI. You can add a top marker layer, a linked polygon layer and 5 reference layers to explore geospatial and business intelligence to help making informed decision. The major features are as follows:

• The marker layer can be dynamically linked with a polygon layer by slicing and selection.
• The data source for polygon layer can be WKT (Well-Known Text) data in data model or built-in boundary data inside the visual or uploaded shape/geojson file.
• 5 reference layers can be added at most.
• The polygon layer can be colored based on categories or quantities in the Legend field.
• Markers can be configured as the following types: circle, square, triangle, hexagon, star, diamond.
• Markers, pie charts, bar charts, donut charts and stacked bar charts can be clustered by the polygon layer.
• Drill down donut chart map, choropleth map, pie chart map, bar chart map and stacked bar chart map by using Geonames or WKT polygon layers.
• Combine symbols or charts with choropleth map to gain more business insights.
• Outlier points can be shown for proportional symbol map and symbol choropleth map.
• Legend can be added to map to explain the symbol size and colors.
• Labels can be added to map in a visible zoom range.
• The visual can be deployed to Power BI online and report server on premise.
• When the TMap visual is deployed to Power BI report server, you can use it without internet access.

Types of thematic map can be created through the TMap visual are summarized in the table below:

Type Of Thematic Map	Description
Proportional Symbol Map	Symbol size is used to represent the quantity of the data for geographical points.
Pie Chart Map	Pie Chart is used to represent the quantity and composition of a group of data for geographical points or regions.
Bar Chart Map	Bar Chart is used to represent the distribution of a group of data for geographical points or regions.
Donut Chart Map	Donut Chart is used to represent the quantity and composition of a group of data for geographical points or regions.
Stacked Bar Chart Map	Stacked Bar Chart is used to represent the trends of a group of data for geographical points or regions.
Graduated Color Map	Sequential color scheme is used to represent the quantity of the data for geographical points.
Filled Map	Filled color is used to represent the category of the data for geographical regions.
Choropleth Map	Sequential color scheme is used to represent the quantity of the data for geographical regions.
Symbol Choropleth Map	Combining Proportional Symbols and Choropleth Map into one map to explore insights at both regional and individual location level.
Chart Choropleth Map	Combining Charts and Choropleth Map into one map to help multivariate analysis and geovisualization.

The following is an example map shown drilldown donut choropleth map, choropleth map, pie chart map and bar choropleth map.