brettwiesner kirjoitti:
Hi,
I have an application that programatically sets the GDAL_DATA
environment variable. However, when I do this I get errors
complaining that it can't find GDAL_DATA. When I use an application
like process explorer to see the environment of the process I see that
I am correctly setting the environment variable to what I want. If I
run the application from a batch file that "sets" the env var before
running the application then things work.
Because I can see from process explorer that I'm correctly setting the
env var for the process, I am left to believe that some dll get's
loaded and the GDAL_DATA env var is used before my code gets a chance
to set it. Is this possible? When/ where does the value of the env var
GDAL_DATA get used?
Does the error message you get specifically mention GDAL_DATA? I.e.,
does it contain "...Try setting the GDAL_DATA environment variable..."?
I believe that's the only error message which refers to GDAL_DATA and
it's called from OGRSpatialReference::importFromEPSGA in
ogr_fromepsg.cpp. That method "Initialize SRS based on EPSG GCS or PCS
code." (from docs). It shoudn't be called in an initialization of a DLL.
GDAL_DATA is used often when GDAL needs to find files, but if GDAL_DATA
is not found there's no complaints.
Regards,
Ari
Thanks,
Brett
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--
Prof. Ari Jolma
Environmental Management Information Technology
Teknillinen Korkeakoulu / Helsinki University of Technology
tel: +358 9 4511 address: POBox 5300, 02015 TKK, Finland
Email: ari.jolma at tkk.fi URL: http://geoinformatics.tkk.fi
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