topic Re: How to draw Clark Error Grid with SAS/Graph tools? in Graphics Programming

How to draw Clark Error Grid with SAS/Graph tools?

deleted_user — Wed, 16 Sep 2009 15:52:20 GMT

I need to use SAS/Graph to draw Clark Error Grid. Does any body know i it is possible? If so , how? Thanks.

SASDR

Re: How to draw Clark Error Grid with SAS/Graph tools?

DanH_sas — Wed, 16 Sep 2009 16:05:00 GMT

The best approach for creating this graph would probably be to create an annotate dataset for the regions and region labels. Then, use that annotate dataset with PROC GPLOT to draw the scatterplot with the regions.

Re: How to draw Clark Error Grid with SAS/Graph tools?

deleted_user — Thu, 17 Sep 2009 17:09:53 GMT

Thank you, Dan. It works great.

One more question, how to remove the most outside frame? Thanks.

Re: How to draw Clark Error Grid with SAS/Graph tools?

ChrisNZ — Fri, 18 Sep 2009 05:00:00 GMT

use option NOFRAME ?

Re: How to draw Clark Error Grid with SAS/Graph tools?

deleted_user — Fri, 18 Sep 2009 05:26:15 GMT

Thanks, Chris,

I tried noframe option in plot statement in Proc gplot. The frame connected to x-axis and y-axis disappeared but the outmost frame is still there.

Re: How to draw Clark Error Grid with SAS/Graph tools?

sbb — Fri, 18 Sep 2009 12:01:52 GMT

SAS GOPTIONS BORDER/NOBORDER?

Scott Barry
SBBWorks, Inc.

http://support.sas.com/documentation/cdl/en/graphref/61884/HTML/default/gopdict-border.htm

Re: How to draw Clark Error Grid with SAS/Graph tools?

deleted_user — Fri, 18 Sep 2009 14:48:21 GMT

Thanks, Scott.

It works great.

Jack

Re: How to draw Clark Error Grid with SAS/Graph tools?

AnalytX — Fri, 16 Nov 2012 09:02:27 GMT

Hi everybody,

Would it be possible to have an example of code to draw these Clark Error Grid plots?

Thanking you in advance.

Re: How to draw Clark Error Grid with SAS/Graph tools?

GraphGuy — Mon, 19 Nov 2012 14:58:12 GMT

I've taken a stab at this, basing my grid visually on the example in Wikipedia.

Mine looks very similar to theirs, but I wasn't sure what the *exact* cut-off values should be.

If someone knows the exact values, I'd be happy to have them update my sample

Re: How to draw Clark Error Grid with SAS/Graph tools?

AnalytX — Mon, 19 Nov 2012 15:11:25 GMT

Hi Robert,

Thanks a lor for your quick answer. It souds great!!!

Just a last question: would it be possible to fill with figures and borders with colors (see example in this article - Figure 1)? If yes, It would be perfect!

Thanking you in advance

Re: How to draw Clark Error Grid with SAS/Graph tools?

GraphGuy — Mon, 19 Nov 2012 16:00:20 GMT

This could be done with annotated polygons (rather than annotated lines). Also the areas and axis values are different (actually simpler) in this chart, than in the one I used (from Wikipedia). And this brings to mind a suggestion for everyone ... if you have a certain chart in mind, please post that in your first comment - this can save a lot of confusion & re-work!

Re: How to draw Clark Error Grid with SAS/Graph tools?

AnalytX — Mon, 19 Nov 2012 16:24:09 GMT

Dear Robert,

Thanks for your answer. I will try to do this with annotated polygons. I will let you informed if I succeed to perfom this.

I agree, we have to be very clear about the result we want to obtain.

In my case, please be sure that your code is highly appreciated and helpful as I will have to generate both plots (with 3 and 5 different areas) and also with colors at the request of my colleagues.

Thanking you again for your help.

Best regards

Re: How to draw Clark Error Grid with SAS/Graph tools?

GraphGuy — Mon, 19 Nov 2012 18:38:29 GMT

Ok - here's what I've come up with for the other plot (using annotated poly/polycont areas for the colored background)...

Re: How to draw Clark Error Grid with SAS/Graph tools?

GraphGuy — Mon, 19 Nov 2012 19:19:42 GMT

And, after seeing how they specified the coordinates for the areas of the 2nd example, I think it probably makes more sense to specify the coordinates of the areas in direct values (rather than %), so I've re-written the first example to use direct values (like the 2nd example). Attaching the new code:

Re: How to draw Clark Error Grid with SAS/Graph tools?

AnalytX — Tue, 20 Nov 2012 08:22:26 GMT

Thanks a lot Robert! That is perfect! This is exactly what we wanted to generate.

Thanks again a lot for your help.

Best regards,

Re: How to draw Clark Error Grid with SAS/Graph tools?

AnalytX — Thu, 04 Apr 2013 08:46:20 GMT

Hi everybody,

Does anyone have an idea how to count the number of points in each zone A, B and C?

Thanks in advance

Best,

Re: How to draw Clark Error Grid with SAS/Graph tools?

GraphGuy — Thu, 04 Apr 2013 12:07:08 GMT

You could create a SAS/Graph gmap representation of the Clark Error Grid, where each area is a gmap polygon (like a 'state' in maps.us), and then use Proc Ginside to see which polygon each x/y point is in.

Re: How to draw Clark Error Grid with SAS/Graph tools?

AnalytX — Thu, 04 Apr 2013 12:36:41 GMT

Thanks a lor for your quick answer. I started from your example "hemoglobin_error_grid" (2nd example). I am not yet very comfortable with the creation of SAS/Graph gmap and the PROC GINSIDE. I will work on it and let you know.

Thanks again!

Best,

Re: How to draw Clark Error Grid with SAS/Graph tools?

AnalytX — Thu, 04 Apr 2013 21:16:10 GMT

Thanks a lot Robert,

The methodology you have described runs perfectly!

Best,

Re: How to draw Clark Error Grid with SAS/Graph tools?

Rick_SAS — Thu, 02 May 2013 19:28:52 GMT

See this paper: http://support.sas.com/resources/papers/proceedings13/133-2013.pdf