Carl,
I don't have one such PDF at hand, but with one sample of the GDAL
autotest suite:
$ gdalinfo autotest/gdrivers/data/pdf/adobe_style_geospatial.pdf -mdd LAYERS
[...]
Metadata (LAYERS):
LAYER_00_NAME=New_Data_Frame
LAYER_01_NAME=New_Data_Frame.Graticule
LAYER_02_NAME=Layers
LAYER_03_NAME=Layers.Measured_Grid
LAYER_04_NAME=Layers.Graticule
[...]
Programatically, you can get this list of layers with
Dataset.GetMetadata("LAYERS")
Then you can select layers you want to activate with the LAYERS open option:
gdal_translate autotest/gdrivers/data/pdf/adobe_style_geospatial.pdf
out.tif -oo LAYERS=New_Data_Frame.Graticule,Layers.Graticule
or disable select ones with the LAYERS_OFF open option:
gdal_translate autotest/gdrivers/data/pdf/adobe_style_geospatial.pdf
out.tif -oo LAYERS_OFF=New_Data_Frame.Graticule,Layers.Graticule
Programatically,
gdal.Translate("out.tif", gdal.OpenEx("in.pdf", open_options =
["LAYERS=New_Data_Frame.Graticule,Layers.Graticule"])
Even
Le 25/03/2025 à 21:40, Carl Carlson via gdal-dev a écrit :
I have almost no experience with GDAL or python, butI do have 57
years programming experience. I need some help with GDAL. At 79 I
don’t have the time and energy to get deeply into these topics. I
need a quick solution
I am writing a program to copy selected layers from a 7.5’ USGS
geospatial PDF Topo File and save them as geoTIFFs. My efforts with
gdalinfo, gdal.Open, and gdal.Translate have led me nowhere
worthwhile. I can’t find the layers. I just don’t know enough about
this.
Would some kind person help me out with sample code?
Thanks
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