February 2013
Intermediate to advanced
304 pages
6h 45m
English
Content preview from Programming ArcGIS 10.1 with Python CookbookBecome 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 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 format SHAPE@<Part of Feature to be Returned>. The only exception to this format is the OID@ token, which returns the object ID of the feature. The following code ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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