Read WKB rasters to Numpy arrays and convert any raster to WKB format.
wkb_raster.read_wkb_raster(wkb)Parameters
- wkb - file-like object. Binary raster in WKB format.
Returns
{
'version': int,
'scaleX': float,
'scaleY': float,
'ipX': float,
'ipY': float,
'skewX': float,
'skewY': float,
'srid': int,
'width': int,
'height': int,
'bands': [{
'nodata': bool|int|float,
'isOffline': bool,
'hasNodataValue': bool,
'isNodataValue': bool,
'ndarray': numpy.ndarray((width, height), bool|int|float)
}, ...]
}
Usage
With a binary WKB file:
from wkb_raster import read_wkb_raster
with open('img.wkb') as f:
raster = read_wkb_raster(f)
raster['bands'][0]With WKB from PostGIS Raster. Use ST_AsBinary to return the WKB representation of the raster.
SELECT ST_AsBinary(rast) FROM rasters;Wrap the binary buffer in cStringIO.StringIO:
from cStringIO import StringIO
from wkb_raster import read_wkb_raster
raster = read_wkb_raster(StringIO(buf))
raster['bands'][0]Write rasterio rasters to binary WKB:
import rasterio
from wkb_raster import write_wkb_raster
with rasterio.open('example.tif') as dataset:
wkb = write_wkb_raster(dataset)