July 2015
Intermediate to advanced
366 pages
8h 7m
English
Content preview from Programming ArcGIS with Python Cookbook, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Improving cursor performance with geometry tokens
Geometry tokens were introduced in ArcGIS 10.1 as a performance improvement for cursors. Rather than returning the entire geometry of a feature inside the cursor, only a portion of the geometry is returned. Returning the entire geometry of a feature can result in decreased cursor performance due to the amount of data that has to be returned. It's significantly faster to return only the specific portion of the geometry that is needed.
Getting ready
A token is provided as one of the fields in the field list passed into the constructor for a cursor and is in the SHAPE@<Part of Feature to be Returned> format. The only exception to this format is the OID@ token, which returns the object ID of the feature. ...
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