A simplified Heatmap tool can now be accessed from the Map tab on the MapInfo Pro ribbon. This new tool is provided in addition to the existing Heatmap operations accessed via the Create Raster button on the Raster tab.
The simplified Heatmap tool uses the same methodology available in the Estimate and Weighted Estimate methods on the Raster tab. By default, it will compute a smooth heatmap that reflects the density of the input point data locations. In addition, you can now select a data field from the input dataset which is used calculate the estimation. In the default case, each data point represents a single sample (or event) at that location. When a weighting field is supplied, the value of this field is interpreted to represent the number of samples at that location. This sample count is used to weight the heatmap calculations. The result is a heatmap that is biased towards points that have a high sample count.
On the Heatmap dialog box, we have added the Select Column option to enable you to specify the column from the input .TAB file. By default, None is selected. If you want to create a simple Heatmap based on density estimation, use None in the Select Column drop-down list.
Accessing Heatmap tool from the MapInfo Pro Ribbon
On the Map tab, in the Content group, click Heatmap
, to open the Heatmap dialog box. This dialog
provides predefined styles for the Heatmap. - Right-Click on the Layer Control window and click Heatmap.
Area of influence
The Area of Influence slider controls the relative size of the radius. By default, the scale on the slider is centered on the value of zero. It changes to the negative integers as it moves to the left and positive integers as it moves to the right. You can set the slider between 0 to 10.
If you want to make the color transition smoother, move the slider to the right (plus values), and if you are going to make the color transition less smooth and more granular, move it to the left (minus values).