[gdal-dev] Re-post, user-defined

[Liyuneh Gebre]

Hi Even,
thank you for your response,
gdal version is: GDAL 3.6.4, released 2023/04/17
I got the defined target projection included in the link. yes, it's
geocentric and for further exploration the custom project transformation
file .gtf extension is also included.
https://u.pcloud.link/publink/show?code=kZj5wh0ZtFWXtI9UGjQiD6KXxn5A9hiWDpEX

On Mon, Apr 29, 2024 at 4:23 PM Even Rouault <even.rouault at spatialys.com>
wrote:

> Hi,
>
> it is difficult to help you with just the elements you've provided.
>
> What could be helpful is:
>
> - the output of gdalinfo on the input file
>
> - the output of gdalinfo on the output file generate by ArcPy
>
> - how you define the target projection in ArcPy
>
> - the output of gdalinfo on the output file generate by GDAL
>
> - links to all the above files
>
> - the GDAL version you use
>
>
> Totally blind guess: try to add "+towgs84=0,0,0 " in your -t_srs PROJ
> string, to ask PROJ to consider that your target CRS datum has the same
> center and axis orientation as WGS84 (and thus go to geographic <-->
> geocentric conversion when changing datums). Otherwise without datum
> shifts, PROJ will consider that longitude,latitude coordinates of the
> geographic CRS underlying the source and target CRS is the same.
>
> Even
> Le 29/04/2024 à 14:57, Liyuneh Gebre via gdal-dev a écrit :
>
> Dear all,
> I am requesting again if you kind have some responds or direction, thank
> you
> I have difficulties in accurately reprojecting a raster file to a
> user-defined projection.
> I used the following commands in gdal while the output is not similar to
> arcpy results.  kindly offer your guidance to achieve the same result.  The
> arcpy uses custom transformation and then reprojection.
> gdalwarp -t_srs '+proj=laea +a=6378137.0 +f=0.0 +pm=0 +x_0=0.0 +y_0=0.0
> +lon_0=20.0 +lat_0=5.0 +units=m +axis=enu +no_defs'  -dstalpha  -wo
> SOURCE_EXTRA=1000 -r nearest rain_in.bil rain_projected.bil
>
>
> *Liyuneh Gebre**, **Associate Researcher*
>
> *Ethiopian Institute of Agricultural Research,EIAR *
>
> *Cell Phone:+251 911858155 *
>
> *linkedIn: https://www.linkedin.com/in/liyuneh-gebre-b842b440/
> <https://www.linkedin.com/in/liyuneh-gebre-b842b440/> *
> *skype:liyenew_1*
> *Addis Ababa, Ethioipa*
>
> _______________________________________________
> gdal-dev mailing listgdal-dev at lists.osgeo.orghttps://lists.osgeo.org/mailman/listinfo/gdal-dev
>
> -- http://www.spatialys.com
> My software is free, but my time generally not.
>
>

-- 
*Liyuneh Gebre**, **Associate Researcher*

*Ethiopian Institute of Agricultural Research,EIAR*

*Cell Phone:+251 911858155*

*linkedIn: https://www.linkedin.com/in/liyuneh-gebre-b842b440/
<https://www.linkedin.com/in/liyuneh-gebre-b842b440/>*
*skype:liyenew_1*
*Addis Ababa, Ethioipa*
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