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Con tool in Spatial Analyst (Query Builder)

Question asked by pino418 on Nov 28, 2014
Latest reply on Nov 29, 2014 by curtvprice

Hi everyone,


I am working on a tree crown delimitation project with lidar data. Everything is going well but at some point, it just seems I can't use the query builder in the con tool. I've used it in steps before this point so I don't know where the trouble might be....


Here are the steps thus far:


invert canopy raster (Math/Negate tool)

- tree peaks become ponds

- branches/crowns become watersheds


Smooth inverted raster (Filter)


Determine local minima

- focal flow to extract tree tops (Con tool, VALUE = “255”, if true, return Inverted raster


Remove lowest trees (< 7 meters) --> here comme the trouble, trying to use the con tool, I don't have access to the data in the Query Builder of the con tool!!


Any help would be appreciated!