def gdalconst_to_imagemode(const):
"""
This function translates a GDAL data type constant as defined in the
:mod:`gdalconst` module to a MapScript image mode constant.
"""
if const == gdal.GDT_Byte:
return MS_IMAGEMODE_BYTE
elif const in (gdal.GDT_Int16, gdal.GDT_UInt16):
return MS_IMAGEMODE_INT16
elif const == gdal.GDT_Float32:
return MS_IMAGEMODE_FLOAT32
else:
raise InternalError(
"MapServer is not capable to process the datatype '%s' (%d)." %
gdal.GetDataTypeName(const), const)
def build(self):
from lxml.builder import E
from lxml import etree
root = E("VRTDataset",
*[
E("VRTRasterBand",
*self.build_sources(band["sources"]),
dataType=gdal.GetDataTypeName(band["data_type"]),
band=str(i))
for i, band in enumerate(self.bands, start=1)
],
rasterXSize=str(self.size_x),
rasterYSize=str(self.size_y))
#root.append()
if self.transformer:
gcp_ds, resample, order = self.transformer
root.append(
E("GDALWarpOptions", E("WarpMemoryLimit", "6.71089e+07"),
E("ResampleAlg", resample)))
return etree.tostring(root, pretty_print=True)
def __unicode__(self):
return "%s (%s)" % (self.name, gdal.GetDataTypeName(self.data_type))