topic Re: Run Thiessen polygons to a specific boundary shapefile in Geoprocessing Questions https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579435#M19208 <HTML><HEAD></HEAD><BODY><SPAN>If you were into scripting, you could:</SPAN><BR /><BR /><SPAN>For each county:</SPAN><BR /><SPAN>-Build a Thiessen polygon for just the points within the county</SPAN><BR /><SPAN>-Intersect the county boundary with the Thiessen polygon</SPAN><BR /><BR /><SPAN>Then merge all the intersect polygon outputs together.</SPAN></BODY></HTML> Wed, 08 Jun 2011 16:43:43 GMT ChrisSnyder 2011-06-08T16:43:43Z Run Thiessen polygons to a specific boundary shapefile https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579431#M19204 <HTML><HEAD></HEAD><BODY><SPAN>I have a point file with township info, but it has no corresponding polygons. I need to create a polygon file, such that for each given county (I do have the county polygon file), each centroid gives an estimated township boundaries which we can then turn into polygons. These polygons need to fit such that they are contained and define the boundary of each county.</SPAN></BODY></HTML> Wed, 12 May 2010 21:53:50 GMT https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579431#M19204 PatriciaCarbajales-Dale 2010-05-12T21:53:50Z Re: Run Thiessen polygons to a specific boundary shapefile https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579432#M19205 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><SPAN>I have exactly the same problem... Unfortunately, I also do not&nbsp; have a solution. Did you find one in the mean time? Would be great if you could tell me more...</SPAN><BR /><SPAN>Regards, Jutta</SPAN></BODY></HTML> Tue, 07 Jun 2011 13:29:12 GMT https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579432#M19205 JuttaSchmieder 2011-06-07T13:29:12Z Re: Run Thiessen polygons to a specific boundary shapefile https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579433#M19206 <HTML><HEAD></HEAD><BODY><SPAN>Why not just clip the Thiessen polygons to the county border?</SPAN></BODY></HTML> Tue, 07 Jun 2011 16:45:08 GMT https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579433#M19206 GerryGabrisch 2011-06-07T16:45:08Z Re: Run Thiessen polygons to a specific boundary shapefile https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579434#M19207 <HTML><HEAD></HEAD><BODY><SPAN>The problem is, that there are many neighbouring polygons. That means if you clip polygons with the county border, there are "leftovers" of the Thiessen polygons in the neighbouring county polygons. Possibly it is easier to understand by looking at the attached jpg, where I tried to illustrate the problem.</SPAN></BODY></HTML> Wed, 08 Jun 2011 09:17:42 GMT https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579434#M19207 JuttaSchmieder 2011-06-08T09:17:42Z Re: Run Thiessen polygons to a specific boundary shapefile https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579435#M19208 <HTML><HEAD></HEAD><BODY><SPAN>If you were into scripting, you could:</SPAN><BR /><BR /><SPAN>For each county:</SPAN><BR /><SPAN>-Build a Thiessen polygon for just the points within the county</SPAN><BR /><SPAN>-Intersect the county boundary with the Thiessen polygon</SPAN><BR /><BR /><SPAN>Then merge all the intersect polygon outputs together.</SPAN></BODY></HTML> Wed, 08 Jun 2011 16:43:43 GMT https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579435#M19208 ChrisSnyder 2011-06-08T16:43:43Z Re: Run Thiessen polygons to a specific boundary shapefile https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579436#M19209 <HTML><HEAD></HEAD><BODY><SPAN>Chris has the solution, but you could do the same iteration in ModelBuilder using Iterate Feature Selection (</SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//00400000000s000000.htm">http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//00400000000s000000.htm</A><BR /><BR /><SPAN>(assumes you have 10.0)</SPAN></BODY></HTML> Tue, 14 Jun 2011 18:00:37 GMT https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579436#M19209 DaleHoneycutt 2011-06-14T18:00:37Z Re: Run Thiessen polygons to a specific boundary shapefile https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579437#M19210 <HTML><HEAD></HEAD><BODY><SPAN>Chris and Dale, thank you for your help. Now it works!</SPAN></BODY></HTML> Thu, 16 Jun 2011 13:42:08 GMT https://community.esri.com/t5/geoprocessing-questions/run-thiessen-polygons-to-a-specific-boundary/m-p/579437#M19210 JuttaSchmieder 2011-06-16T13:42:08Z