topic Re: Excess Lines in Prism Map in Graphics Programming https://communities.sas.com/t5/Graphics-Programming/Excess-Lines-in-Prism-Map/m-p/215274#M8024 <HTML><HEAD></HEAD><BODY><P><BR />You might want to provide the code and possibly a few records. Did you use the RELZERO option for instance?</P><P>Also the documentation says that PRISM maps do not work will with "holes" which could be lakes or similar boundaries.</P></BODY></HTML> Thu, 02 Apr 2015 19:59:57 GMT ballardw 2015-04-02T19:59:57Z Excess Lines in Prism Map https://communities.sas.com/t5/Graphics-Programming/Excess-Lines-in-Prism-Map/m-p/215273#M8023 <HTML><HEAD></HEAD><BODY><P>I have a map that I usually create using the CHORO statement, but decided to test out the PRISM statement instead.&nbsp; The map looks just fine using CHORO, but the PRISM option seems to create an abundance of excess lines across the map.&nbsp; I've attached an example of the southern US for reference.</P><P></P><P>I assume this is due to the structure of my map, I created it using custom regions rolled up from zip codes.&nbsp; Could it be due to too many observations per region or is it somehow related to the order of the regions?&nbsp; As I mentioned, the map looks fine when using the CHORO statement, so I'm struggling to figure out how to produce a better PRISM map.&nbsp; Any assistance is greatly appreciated.&nbsp; Thanks!</P><BR /><IMG src="https://communities.sas.com/t5/image/serverpage/image-id/10881i4E79D2DF698F8FD8/image-size/large?v=1.0&amp;px=600" border="0" alt="Prism.PNG" title="Prism.PNG" /></BODY></HTML> Thu, 02 Apr 2015 18:41:09 GMT https://communities.sas.com/t5/Graphics-Programming/Excess-Lines-in-Prism-Map/m-p/215273#M8023 P5C768 2015-04-02T18:41:09Z Re: Excess Lines in Prism Map https://communities.sas.com/t5/Graphics-Programming/Excess-Lines-in-Prism-Map/m-p/215274#M8024 <HTML><HEAD></HEAD><BODY><P><BR />You might want to provide the code and possibly a few records. Did you use the RELZERO option for instance?</P><P>Also the documentation says that PRISM maps do not work will with "holes" which could be lakes or similar boundaries.</P></BODY></HTML> Thu, 02 Apr 2015 19:59:57 GMT https://communities.sas.com/t5/Graphics-Programming/Excess-Lines-in-Prism-Map/m-p/215274#M8024 ballardw 2015-04-02T19:59:57Z Re: Excess Lines in Prism Map https://communities.sas.com/t5/Graphics-Programming/Excess-Lines-in-Prism-Map/m-p/215275#M8025 <HTML><HEAD></HEAD><BODY><P>You might try reducing (GREDUCE)&nbsp; the map.&nbsp; It has too many lines when the Prism is solid black.&nbsp; It is likely confusing it.</P></BODY></HTML> Mon, 06 Apr 2015 11:05:25 GMT https://communities.sas.com/t5/Graphics-Programming/Excess-Lines-in-Prism-Map/m-p/215275#M8025 Darrell_sas 2015-04-06T11:05:25Z