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Graeme B Bell's Projects

fast_map_intersection icon fast_map_intersection

Uses parallel programming & small tricks to produce large map intersections up to 20-30x faster.

gbb_gdal_calc icon gbb_gdal_calc

This is an alternative version of gdal_calc that allows better handling of nodata and 15-30% faster runtimes. Minimal changes to source code. It has been submitted for inclusion in the trunk GDAL distribution via trac, but it may take a long time to show up. You can use it from here in the meantime if you like.

numpy-fast-any-all icon numpy-fast-any-all

30x faster than using numpy.any/all (numpy 1.7), syntactically sweeter than numpy.logical_or/logical_and, trivial implementation, no need for idiomatic approaches to performance.

numpy-simple-select icon numpy-simple-select

This is a drop-in replacement for the 'select' function in numpy. It has been reimplemented to fix long-standing bugs, improve speed substantially in all use cases, and improve internal documentation. It now supports broadcasting. It also performs some extra validation of input.

par_psql icon par_psql

Parallel 'psql'. Run parallel queries inline in PostgreSQL’s psql tool. Useful for ‘slightly big data’, GIS.

ppppt icon ppppt

Parallel pl/pgsql performance tests

rbuild_demo icon rbuild_demo

A demonstration of rbuild. Instructions, shapefiles, buildfiles are included.

ruleparser icon ruleparser

Quickly and easily transform geometry datasets using a set of rules stored in a spreadsheet and raster calculations. It is designed to work with 'rbuild'.

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