topic Heat Map in Graphics Programming

Heat Map

Jaime — Wed, 18 Aug 2010 14:24:34 GMT

I usually use proc report with some conditional formatting to create heatmaps.
Is there a better way using any of the new graphics procs?

Re: Heat Map

Jay54 — Wed, 18 Aug 2010 14:52:30 GMT

With SAS 9.2, You can use SGPLOT procedure and / or GTL to do heat maps, however, you have to use a scatter plot and manage the size of the markers. See examples here:

http://support.sas.com/sassamples/graphgallery/PROC_SGPLOT.html
http://support.sas.com/kb/31/489.html
http://support.sas.com/kb/35/156.html

Looking ahead, we will have a real HEATMAP statement in GTL at V9.3.

Re: Heat Map

GraphGuy — Wed, 18 Aug 2010 16:03:39 GMT

There are many kinds of charts people call "heat maps" - could you provide a link to an example (on the web) of the specific kind of heat map you're wanting to create?

Re: Heat Map

Jaime — Wed, 18 Aug 2010 17:27:37 GMT

Here is a link to the type of heatmap. http://learnr.wordpress.com/2010/01/26/ggplot2-quick-heatmap-plotting/

Good to here GTL will get the heatmap function.
I've troed the examples above in the past and found the sizing of the scatter dots a bit messy.

Re: Heat Map

GraphGuy — Wed, 18 Aug 2010 19:39:37 GMT