Opened 14 years ago
Closed 14 years ago
#3589 closed defect (fixed)
SetDescription method needs to be overridden in VRTRasterBand
Reported by: | fasano | Owned by: | warmerdam |
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Priority: | normal | Milestone: | 1.8.0 |
Component: | default | Version: | unspecified |
Severity: | normal | Keywords: | |
Cc: | antonio |
Description
SetDescription
method needs to be overridden in VRTRasterBand.
So it will be possible to flush it so that any change of the "Description" item is written on disk.
In fact at the moment if this item is changed on the object, this change is not written on the file. See following example:
from osgeo import gdal realfname = 'image.tiff' vrtfilename = 'vrtdataset.vrt' #open real dataset and create copy as a vrt file vrt_driver = gdal.GetDriverByName('VRT') gtiff_driver = gdal.GetDriverByName('GTIFF') realdataset = gtiff_driver.Create( 'image.tiff', 100, 100, 1, eType=gdal.GetDataTypeByName('Byte')) vrtdataset = vrt_driver.CreateCopy(vrtfilename, realdataset) vrtband = vrtdataset.GetRasterBand(1) #try to modify Description print 'Band description before change is:', vrtband.GetDescription() vrtband.SetDescription('New Description for band') print 'Band description after change is:', vrtband.GetDescription() print del vrtband, vrtdataset, realdataset
Executing the script the output is:
fasano@fasano-debian:~/Desktop/test$ python gdalvrt2.py Band description before change is: Band description after change is: New Description for band
But the result is:
fasano@fasano-debian:~/Desktop/test$ cat vrtdataset.vrt <VRTDataset rasterXSize="100" rasterYSize="100"> <Metadata/> <VRTRasterBand dataType="Byte" band="1"> <Metadata/> <ColorInterp>Gray</ColorInterp> <SimpleSource> <SourceFilename relativeToVRT="1">image.tiff</SourceFilename> <SourceBand>1</SourceBand> <SourceProperties RasterXSize="100" RasterYSize="100" DataType="Byte" BlockXSize="100" BlockYSize="81"/> <SrcRect xOff="0" yOff="0" xSize="100" ySize="100"/> <DstRect xOff="0" yOff="0" xSize="100" ySize="100"/> </SimpleSource> </VRTRasterBand> </VRTDataset>
Note that no "Description" field is in file.
See #3588 too.
Change History (2)
comment:1 by , 14 years ago
Cc: | added |
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comment:2 by , 14 years ago
Milestone: | → 1.8.0 |
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Resolution: | → fixed |
Status: | new → closed |
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Fixed in trunk in r19814