- Laura Whiting

# A Bivariate Kernel Density Graph in Stata

You can create three types of bivariate kernel density plots in Stata, one is a 2D heatmap, the second is a surface plot, and the third is a bar plot.

To create these graphs in Stata, you first need to download the command **tddens** from the SSC, which you do in Stata using the following command:

To generate all three of these graphs in Stata, use the following commands:

The first graph is always generated by the **tddens** command, the second graph is generated using the **sgraph** option, and the third graph is generated using the ** bgraph** option.

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