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djhenderson / pyshp

Automatically exported from code.google.com/p/pyshp
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Added optional Numpy support for really fast 5.5x increase in shape reading speed #61

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
Hi,

Added a small but powerful new feature so that if the user has Numpy he or she 
can set an option to make the shapefile reading about 5.5x faster. This Numpy 
support is also useful because then the coordinates are listed in Numpy arrays 
and can be manipulated with fast advanced computations/transforms.

This was one of several nifty changes/new features to your (already awesome) 
library I made in a new fork at 

https://github.com/karimbahgat/pyshp-fork-speedup-and-geojson-write

Hope this can be worked into next version of PyShp, especially because it still 
keeps Pyshp as a pure Python library, but just adds optional support for 
another quite common module Numpy. It is very useful when it comes to really 
large shapefiles like the gigantic GADM province dataset, decreasing load time 
from several minutes to a much more managable thirty seconds. 

Karim

Original issue reported on code.google.com by karim.ba...@gmail.com on 16 Jan 2014 at 1:50