Esri Mapping Center - Ask a Cartographer

How to create graduated symbols and color intensity at the same time

October 04 2011 | 2 comments
Categories: ArcGIS Methods, Symbology

I am symbolizing GPS data showing populations at specific point locations.
I want to use graduated symbols to show the population within ranges but I also want those graduated symbols to show color intensity at the same time. For example, as the population increases, the size of the circle showing population increase but I also want the smaller size symbol to be light red and as the population increases, I want each class to show a darker red. If I have four classes, I want the smallest circle to be light red and the largest circle to be darkest red. Amy suggestions?
Thank you.

Mapping Center Answer:

We have gotten this question before. Our Multiple Attributes renderer only works for one qualitative + one quantitative attribute, not two quantitative attributes. Nonetheless, here is how you can do this:

http://mappingcenter.esri.com/index.cfm?fa=ask.answers&q=2105

Two visual variables for one attribute posted by Gerald Daumiller on Oct 5 2011 2:35PM

This question isn't really about a multiple attribute render. They want, for one variable, for the symbols to get both larger and darker as the value increases. As far as I know, you can't do it in one step. I do this all the time, by setting the color automatically and the size by hand.

One attribute posted by Aileen Buckley on Oct 5 2011 5:30PM

If you do want the symbol to show one attribute using two visual cues (the size and the color intensity) then you would do it the way that Gerald mentions, by changing the symbols interactively. Thanks for pointing out my misinterpretation, Gerald!

If you would like to post a comment, please login.