Data:
40 million lines in a file geodatabase
1 point in a shapefile
1. Select the point
2. Select by location on the lines, "within a distance" of 100 meters of the selected point
- takes basically 0 seconds - returns immediately with 2 line features selected. Good
3. *do the same selection* on the lines, "within a distance" of 100 meters of the selected, point, ADD_TO_SELECTION
- takes 4 minutes
Why? The time should be very small: the time for the selection (<1 second) plus whatever time it takes to add it to the list of already selected features.
40 million lines in a file geodatabase
1 point in a shapefile
1. Select the point
2. Select by location on the lines, "within a distance" of 100 meters of the selected point
- takes basically 0 seconds - returns immediately with 2 line features selected. Good
3. *do the same selection* on the lines, "within a distance" of 100 meters of the selected, point, ADD_TO_SELECTION
- takes 4 minutes
Why? The time should be very small: the time for the selection (<1 second) plus whatever time it takes to add it to the list of already selected features.
