So I'm trying to take individual grid point buffers and only select the regions that the points intersect with (via SelectByLocation). Generally I run the following code to:
- Explode multipart features (not inlcuded in code below)
- create a Feature Layer
- Make the Selection and
- then turn the selected features in the Layer into a new Feature Class
Below is the code for ArcGIS's arcpy:
for a in geogList: for b in radbufListFn: for c in idList: layerName = a+b+"_erase_exp_"+c+"_Layer" arcpy.MakeFeatureLayer_management(wp+"geogs/split_geogs_explode.gdb/"+a+b+"_erase_exp_"+c,layerName) arcpy.SelectLayerByLocation_management(layerName,"INTERSECT",wp+"geogs/split_points.gdb/"+a+"_"+c,"#","NEW_SELECTION") arcpy.FeatureClassToFeatureClass_conversion(layerName,wp+"geogs/split_geogs_explode_select.gdb",a+b+'_'+c)
I've seen that there's a ST_Intersection and ST_Intersect but I'm not really sure these do what I need ogr2ogr. I need my output to be just the A part of the polygon.
Is there an ogr2ogr equivalent of SelectLayerByLocation?
edit: I found a blogpost here http://www.gisdoctor.com/site/2012/07/29/statement-spatial-join/
I'm not totally sure if this is the code I want, but I modified mine to this for testing purposes:
ogr2ogr -f "ESRI Shapefile" -sql "select PP.*, SP.* from point PP inner join buffer_clip_exp SP with(Index(geom_sidx)) on PP.geom.STIntersects(SP.geom) = 1" test_out.shp buffer_clip_exp.shp point.shp
And I get this error:
layer names ignored in combination with -sql. ERROR 1: SQL Expression Parsing Error: syntax error, unexpected reserved keyword, expecting end of string. Occured around : select PP., SP. from point PP inner join buffer_clip_exp SP with(Index
a caret (^) is below the 'i' in 'inner'