Yeah thanks again for all the great hints, I really appreciate it. I should
have posted earlier here as it would have saved me a lot of time trying ;)
Cheers,
Tilo
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Even,
Thank you for your help. It took me a few attempts but you were correct. I was
trying to use the minimum value for a 32bit floating data set as my null data
value and my number was not exact--as you suggested.
I was using: -3.4028235e+038
And needed to use: -3.4028234663852886e+038
Once
Michael,
ComputeStatistics() is supposed to ignore pixels whose value is the nodata
value. I've tried the following test code to try to reproduce your issue :
#include
int main(int argc, char* argv[])
{
GDALAllRegister();
GDALDatasetH hDS = GDALCreate(GDALGetDriverByName("GTiff"), "tes
Tilo,
The EPSG database, at least as transformed in GDAL .CSV files (I can't say for
the original one) never includes grid, so if you want one grid to be used,
you can't simply specify EPSG: but you have to use the full expanded
proj.4 string with +nadgrids= +wktext
As you noted, it is e
I am trying to compute and set the statistics for a data set that I have
created using GDAL, but the no data values are being included. Is there a way
to ignore the no data value when computing the statistics. The documentation
does not say anything about this, to the best of my knowledge, and i
Hey that did the trick. Seems like with EPSG codes the nadgrids parameter is
just being dropped without further notice. So it's necessary to use the
complete proj parameters for both shape files including the nadgrids and wktext
option to get the results right. With PROJ_DEGUB=1 I also noticed t
Tilo,
> >
> > ogr2ogr -s_srs "+proj=tmerc +lat_0=0 +lon_0=9 +k=1 +y_0=0
> +ellps=bessel
> > +nadgrids=BETA2007.gsb" -t_srs EPSG:25832 target.shp source.shp
>
> I used the parameters instead, but it didn't work either. In
> fact, I think it doesn't matter since ogr2ogr looks up the
> same par
weixj2003ld,
Can you provide your code and a link to the sample dataset that shows this
error?
2010/4/14 weixj2003ld
> I use the following code to read data from a geotiff file and do some
> computing and write it into
> a new one.the bands number is 6; ...
> GDALDataset *poSrcDS,*poDstDS;//
El 14/04/2010 10:31, Tilo Villwock escribió:
ogr2ogr -s_srs "+proj=tmerc +lat_0=0 +lon_0=9 +k=1 +y_0=0
+ellps=bessel +nadgrids=BETA2007.gsb" -t_srs EPSG:25832 target.shp
source.shp
I used the parameters instead, but it didn't work either. In fact, I
think it doesn't matter since ogr2ogr looks u
> Try the following: forget about epsg:3396, and instead specify all the
> individual options from epsg:3396. Something like:
>
>
> ogr2ogr -s_srs "+proj=tmerc +lat_0=0 +lon_0=9 +k=1 +y_0=0 +ellps=bessel
> +nadgrids=BETA2007.gsb" -t_srs EPSG:25832 target.shp source.shp
I used the parameters in
I use the following code to read data from a geotiff file and do some
computing and write it into
a new one.the bands number is 6; ...
GDALDataset *poSrcDS,*poDstDS;//poSrcDs:the source file,poDstDS:the goal
source GDALRasterBand *poSrcBand,*poDstBand;//poSrcBand:the source
band,poDstBand:the
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