XPost: comp.text.pdf, sci.geo.satellite-nav
On Tue, 9th Jul 2024 04:31:28 +0200, Enrico Papaloma wrote:
If you have a PDF of any topographic or park map, how can you tell, with Windows or Android mapping tools, if the map is a georeferenced geoPDF?
By looking for coordinate reference system (CRS) information inside it.
GUI solution with QGIS (
https://www.qgis.org):
* select the Pdf file in question inside the QGIS file browser
* open the Pdf file as if it were a folder by clicking on the triangle
symbol, which is shown in front of the file name
* you should see either pages or layers of that Pdf as separate entries
(at least one)
* right click on one of these pages/layers and select "Properties"
* look, whether a the property sheet contains any valid CRS information
Command line solution with GDAL (
https://gdal.org/download.html):
gdalinfo example.pdf | find "CRS["
If this command returns empty, no CRS information has been found.
HTH.
Bernd
(F-Up set to sgs-n)
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