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import os | |
import sys | |
from osgeo import gdal, ogr, osr | |
sr_wkt = 'LOCAL_CS["arbitrary"]' | |
sr = osr.SpatialReference( sr_wkt ) | |
geotiff_filename = "treasure_island.tif" | |
ds = gdal.Open(geotiff_filename, gdal.GA_Update) | |
sr_wkt = 'LOCAL_CS["arbitrary"]' | |
sr = osr.SpatialReference( sr_wkt ) | |
ds.SetProjection( sr_wkt ) | |
rast_ogr_ds = ogr.GetDriverByName('Memory').CreateDataSource( 'wrk' ) | |
rast_mem_lyr = rast_ogr_ds.CreateLayer( 'poly', srs=sr ) | |
# Add a polygon. | |
wkt_geom_new = 'POLYGON((372 405, 176 90, 811 90, 372 405))' | |
feat = ogr.Feature( rast_mem_lyr.GetLayerDefn() ) | |
feat.SetGeometryDirectly( ogr.Geometry(wkt = wkt_geom_new) ) | |
rast_mem_lyr.CreateFeature( feat ) | |
# Add a linestring. | |
wkt_geom = 'LINESTRING(1000 1000, 1100 1050)' | |
feat = ogr.Feature( rast_mem_lyr.GetLayerDefn() ) | |
feat.SetGeometryDirectly( ogr.Geometry(wkt = wkt_geom) ) | |
rast_mem_lyr.CreateFeature( feat ) | |
# Run the algorithm. | |
ret = gdal.RasterizeLayer( ds, [3,2,1], rast_mem_lyr, | |
burn_values = [200,220,240] ) | |
if ret != 1: | |
print 'fail' | |
else: | |
print 'success' |
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see https://github.com/timwaters/gdal_rasterize_error for source files and more details