topic Re: Scatterplot Matrix - Group doesn't work in Discussions

Scatterplot Matrix - Group doesn't work

TomR — Sun, 11 Jun 2023 11:14:52 GMT

Greetings,

I'm having trouble with the Scatterplot Matrix Group option working consistently in JMP 16.0.0. See examples below. It works fine if I group by Species as in the help file example using Iris sample data. But it doesn't work if I use the Fitness sample data, trying to group by Sex. I must be missing something simple here but I can't find it. In both cases I'm using a Character Nominal column as the grouping variable. I got here because it doesn't work in the dataset I'm analyzing and was surprised to quickly find an example datafile that replicates the problem.

Thanks,

Tom

Re: Scatterplot Matrix - Group doesn't work

Dan_Obermiller — Wed, 09 Jun 2021 21:33:34 GMT

There might be a misunderstanding of what the Group feature does.

From the JMP help:

So it is designed to give you different density ellipses, which I don't see on your pictures. The dots are colored from the Iris data because the row states were already established. I worked with the Fitness data and the grouping worked fine once I asked for the density ellipses.

Re: Scatterplot Matrix - Group doesn't work

TomR — Wed, 09 Jun 2021 23:05:11 GMT

Dan, Your comment about the row states seems to be the clue to making it work. Manually setting the "color or mark by column" feature in the data table is the key. The Group variable isn't needed for simply coloring the points.The density ellipses are indeed another feature, and I'm not needing that right now.

Thanks,

- Tom