Today I am testing out a treemap that I made in Amcharts. I made a treemap of the students that transfer into the University System of Maryland in 2020. The top layer is the education sector, the second layer is the institution. I am still having a bit of trouble getting it to behave as I would like. I would like the second layer names to appear in the boxes, but I can not seem to get it to work as it does in CodePen. Again I got it to work in CodePen using an Amcharts demo as a model, but again I ran into an internal 500 error when I tried to transfer the code over. So I rewrote the code keeping out the pieces that were not rendering properly.

The treemap clearly shows that there are a large number of transfer students from the US Armed Forces, in part because of the University of Maryland Global Campus. I may make another treemap that excludes transfer students from the University of Maryland Global Campus.

Second Layer Hidden

Source: University System of Maryland, IRIS

I figured out how to show the size of the institutions before drill down, but not the institution names. There is likely a simple way to show the labels on a treemap in Amcharts, but I have not yet figured out how. I think that I like the first style better, but I will need to test both versions.

Second Layer Shown

Source: University System of Maryland, IRIS


I realized while I was digging into the data further that I missed the 16,362 students that transferred from “other” out-of-state institutions and 5 students that transferred from “other” MICUA/MD private institutions. I missed them because the institution details is only provided for the top 15 institutions in each of the drill-down categories.