AnsweredAssumed Answered

Help creating a query expression to select pixels by size and distance from other pixels?

Question asked by apa33@nau.edu on Sep 11, 2017

Hello all,

I am attempting to create a land cover ID map from some imagery. My current goal is to create an expression or method that selects all "isolated" single 1X1 pixels of a certain land cover type so I can then later change them. While understand I can select all 1x1 pixels using the calculate geometry then select by area < XXX, I want to only select isolated pixels that are ALSO over a certain distance from similarly identified values.

 

 

In short I would like to select land cover made up of 1 or 2 pixels (not in a large group) and then only select the ones that are over a certain distance of buffer zone of the same type of land cover. I could then delete/change these pixels to have a "cleaner" map.

 

Any help would be appreciated!

 

Alex

Managing Data

Outcomes