search

jlaura / LCC_Code

Large Crater Cluster V 2.0
1 stars 0 forks source link

OID v FID #2

Open jlaura opened 11 years ago

jlaura commented 11 years ago

In the cluster analysis tool it is not possible to hardcode the necessary offset for using a shapefile vs. using a featureclass. Currently the tool works with OIDs (featureclass) and uses a hardcoded '-1'.

Proposed fix is to set the offset to '-n', where 'n' is 0 by default and set to 1 if the workspace is a geodatabse..

jlaura commented 11 years ago

Fixed using the proposed fixed with 2 caveats:

  1. Performance appears slower outside of a gdb. Perhaps this is due to reading from a shapefile via featureclasses using cursors?
  2. Outside of a geodatabase the shapefile is drawn only at full extent. This appears to be an ArcMap issue.
jlaura commented 11 years ago

This error is still persisting and is being tagged as an enhancement.

The workaround is: Export as a shapefile to for sequential FID. Delete the OID field from the shapefile (it may be necessary to create a filler field to ensure that the shapefile contains FID, shape, 1 other field). Export the shapefile as a featureclass back into the geodatabase.