topic Conditional Dissolve in Python Questions https://community.esri.com/t5/python-questions/conditional-dissolve/m-p/467825#M36512 <HTML><HEAD></HEAD><BODY><SPAN>I have never used Python, nor do I know anything about programming but I think it is necessary to accomplish this task.&nbsp; I have a feature class of parcels, which have attributes of area and elevation among other things.&nbsp; I want to dissolve adjacent parcels which either have the same elevation or a lower elevation, up to a maximum dissolved parcel size of 250-acres. I am using ArcGIS 9.2 and have access to most all extensions if that matters.&nbsp; Anybody have suggestions?</SPAN></BODY></HTML> Mon, 16 Dec 2013 18:30:38 GMT DrewBeck 2013-12-16T18:30:38Z Conditional Dissolve https://community.esri.com/t5/python-questions/conditional-dissolve/m-p/467825#M36512 <HTML><HEAD></HEAD><BODY><SPAN>I have never used Python, nor do I know anything about programming but I think it is necessary to accomplish this task.&nbsp; I have a feature class of parcels, which have attributes of area and elevation among other things.&nbsp; I want to dissolve adjacent parcels which either have the same elevation or a lower elevation, up to a maximum dissolved parcel size of 250-acres. I am using ArcGIS 9.2 and have access to most all extensions if that matters.&nbsp; Anybody have suggestions?</SPAN></BODY></HTML> Mon, 16 Dec 2013 18:30:38 GMT https://community.esri.com/t5/python-questions/conditional-dissolve/m-p/467825#M36512 DrewBeck 2013-12-16T18:30:38Z Re: Conditional Dissolve https://community.esri.com/t5/python-questions/conditional-dissolve/m-p/467826#M36513 <HTML><HEAD></HEAD><BODY><SPAN>You could do this with a select by location in a loop and a search cursor (to keep tabs on your elevation and area values). I have some scripts that do a similar thing.</SPAN><BR /><BR /><SPAN>Some issue that will come up:</SPAN><BR /><SPAN>1. What parcel should you start the process with. Depending on the start point, you can potentially have different outcomes.</SPAN><BR /><SPAN>2. As other parcels are "globbed" on to the selection, do you want a "chaining effect" and if so, how many parcels "long" would the chain be allowed to have.</SPAN></BODY></HTML> Mon, 16 Dec 2013 20:23:02 GMT https://community.esri.com/t5/python-questions/conditional-dissolve/m-p/467826#M36513 ChrisSnyder 2013-12-16T20:23:02Z