topic Re: PROC GMAP in Graphics Programming

PROC GMAP

epi_econ_code — Mon, 29 Apr 2024 14:48:42 GMT

Hi everyone,
I am trying to create a map using the gmap procedure. I was able to successfully create the map as shown in the attached images. However, the block option allows us to create a 3-D map and the journal I want to publish this in does not accept 3-D graphs. How can I show the counts of the facilities that is shown using the block option in a 2-D format? Basically, how can I incorporate the information coming from two response variables in a choropleth map?Help to change this block into a 2-D map

Re: PROC GMAP

Panagiotis — Mon, 29 Apr 2024 15:06:08 GMT

In this paper they use GCHART and add a bar chart with VBAR. Starts on page 12. That might help.

https://support.sas.com/resources/papers/proceedings09/215-2009.pdf

- Peter

Re: PROC GMAP

GregTreiman — Mon, 29 Apr 2024 15:51:45 GMT

You could also consider using the SGMAP procedure and layering a bubble map on top of a choropleth map background. The result would look something like this:

I would probably actually recommend displaying the same information in two separate choropleth maps: one for % households and one for # of meal programs. Sometimes a simple map does a better job communicating the point, and viewers might find it easier to notice patterns comparing two maps of the same type side-by-side instead of trying to compare a bar and a choropleth map.

Re: PROC GMAP

epi_econ_code — Mon, 29 Apr 2024 16:43:25 GMT

Not sure how to code for adding the count as bubble (I am new to using PROC GMAP)
I used the following code to get the current map: legend1 label=(f=swissb j=c '% of households who need meals') across=4 down=2 frame position=(top center
inside);
legend2 label=(f=swissb j=c 'Number of school meal programs') across=3 down=1 frame position=(bottom center
inside);
title h=4 f=swissb 'Availability of meal programs and percentage of households in need';
proc gmap data = ccs2019 map=maps.us ;

id state;
area les_tert/legend=legend1;
block ccs_count/levels=3 legend=legend2 ;
format les_tert les_tert.;
run;
quit;

Re: PROC GMAP

epi_econ_code — Mon, 29 Apr 2024 19:02:06 GMT

@GraphGuy I came across your solution for other graph-related questions. Is this something you can help with? I really would appreciate it.

Re: PROC GMAP

GraphGuy — Fri, 21 Jun 2024 13:47:43 GMT

Hypothetically, you could draw bars on a 2d map using annotate (where the bar starts at the center of each state, and the height of the bars is scaled based on the data). I'm not sure it would be a great way to present data, and not sure it would be worth the work.

Re: PROC GMAP

ballardw — Fri, 21 Jun 2024 14:27:41 GMT

Can you show an example of what you want for a 2-d version of your graph?

I would think most understandable might be just a box with the number of school mean programs. Something like this example: https://support.sas.com/kb/24/900.html only use the number to display instead of the state abbreviation. Use CBOX with CBACK=white to have the numbers appear on a white background for readability and to draw attention. Probably still need to play with locations for some of the New England states like Connecticut and Rhode Island as may not be room

If you want to overlay a 2-dimensional rectangle then you could create an annotate data set drawing rectangles that look like a 2-d bar at each state.

Or maybe use a fill pattern to represent the bar information