gdal - 如何使用 GDAL (gdalwarp/gdal_translate) 设置 GeoTIFF 文件的 "band description"选项/标签

Question

有人知道如何使用 GDAL 更改或设置 GeoTIFF 文件的“描述”选项/标签吗？

为了说明我的意思，这是从带有设置“描述”的 GeoTIFF 文件返回的 gdalinfo 示例:

 Band 1 Block=64x64 Type=UInt16, ColorInterp=Undefined
 Description = AVHRR Channel 1:  0.58  micrometers -- 0.68 micrometers
 Min=0.000 Max=814.000 
 Minimum=0.000, Maximum=814.000, Mean=113.177, StdDev=152.897
 Metadata:
    LAYER_TYPE=athematic
    STATISTICS_MAXIMUM=814
    STATISTICS_MEAN=113.17657236931
    STATISTICS_MINIMUM=0
    STATISTICS_STDDEV=152.89720574652

在示例中您可以看到: Description = AVHRR Channel 1: 0.58 micrometers -- 0.68 micrometers

如何使用 GDAL 设置此参数？

Answer 1

在 Python 中，您可以像这样设置波段描述:

from osgeo import gdal, osr
import numpy

# Define output image name, size and projection info:
OutputImage = 'test.tif'
SizeX = 20
SizeY = 20
CellSize = 1
X_Min = 563220.0
Y_Max = 699110.0
N_Bands = 10
srs = osr.SpatialReference()
srs.ImportFromEPSG(2157)
srs = srs.ExportToWkt()
GeoTransform = (X_Min, CellSize, 0, Y_Max, 0, -CellSize)

# Create the output image:
Driver = gdal.GetDriverByName('GTiff')
Raster = Driver.Create(OutputImage, SizeX, SizeY, N_Bands, 2) # Datatype = 2 same as gdal.GDT_UInt16
Raster.SetProjection(srs)
Raster.SetGeoTransform(GeoTransform)

# Iterate over each band
for band in range(N_Bands):
    BandNumber = band + 1
    BandName = 'SomeBandName '+ str(BandNumber).zfill(3)
    RasterBand = Raster.GetRasterBand(BandNumber)
    RasterBand.SetNoDataValue(0)
    RasterBand.SetDescription(BandName) # This sets the band name!
    RasterBand.WriteArray(numpy.ones((SizeX, SizeY)))

# close the output image
Raster = None
print("Done.")

不幸的是，我不确定 ArcGIS 或 QGIS 是否能够读取波段描述。但是，带名称在 Tuiview 中清晰可见: