ISpatialFilter SpatialRelDescription find points not in polygon

AlexanderGray

Hi there,
I have a point featureclass (not M or Z aware) and a polygon.  I want to use a spatial query to find all the points not in the polygon.  As far as I can tell only the spatialRelDescription will do this.  The problem is I get inconsistent results.  Some points are found as expected other are not.

I used the following string:
"F********"
"******T**"

It finds some of the points but never all of the points.  I am somewhat perplexed.

The alternative is to loop through all the point and use a relational operator but that seems like it would be slower.  The SpatialRelDescription should work.

NeilClemmons_GISinc

Do the search geometry and the featureclass have the same spatial reference?  If not, you'll need to project the search geometry into the same spatial reference as the featureclass you're searching.  Alternately, you can set the OutputSpatialReference property on the spatial filter object.  Trying to set the description string can be confusing and there have been bugs found in the past, so you may ultimately have to log an incident with ESRI to get to the bottom of it.