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

[AnalytX]

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,

[GraphGuy]

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.

[AnalytX]

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,

[AnalytX]

Thanks a lot Robert,

The methodology you have described runs perfectly!

Best,

[Ksharp]

Here is Clark Error Grid Graph by using PROC GINSIDE .

https://communities.sas.com/t5/Graphics-Programming/How-to-draw-a-Parkes-Consensus-Error-Grid/td-p/1...

[Rick_SAS]

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

[AnalytX]

Thanks Rick for the doc!

Best,

[Jay54]

See my recent blog article on this topic.  Clark Error Grid Graph - Graphically Speakinghttp://blogs.sas.com/content/graphicallyspeaking/

[HYU]

learnt from it .thanks very much.