[gdal-dev] ogr2ogr mapinfo reporjection

[Richard Greenwood]

So ogr2ogr is doing the reprojection correctly, but writing the wrong
coordinate system string to the resulting MapInfo file. Is that correct?
I'm not a developer and I have not looked at the source code, so I am
guessing, but there might be a look up table defining the MapInfo
coordinate system string for a matching proj4text string. You might look in
the source code for that, or you might want to file a ticket.

Best regards,
Rich


On Mon, May 29, 2017 at 2:35 AM, Jonathan Beliën <jbe at geo6.be> wrote:

> Any idea about this topic ?
>
>
>
> Thanks ! :)
>
>
>
> Jonathan Beliën
>
> GEO-6
>
>
>
> *De :* gdal-dev [mailto:gdal-dev-bounces at lists.osgeo.org] *De la part de*
> Jonathan Beliën
> *Envoyé :* mardi 9 mai 2017 10:21
> *À :* 'GDAL List' <gdal-dev at lists.osgeo.org>
> *Cc :* mitab at egroups.com; 'Hellemans, Philippe' <phe at geo6.be>
>
> *Objet :* Re: [gdal-dev] ogr2ogr mapinfo reporjection
>
>
>
> Hello Richard,
>
>
>
> When I look at the resulting MIF file in a text editor, the coordinates
> are indeed correctly transformed but the header is
>
>
>
> *CoordSys Earth Projection 3, 104, "m", 4.36748666666667, 90,
> 51.1666672333333, 49.8333339, 150000.013, 5400088.438*
>
>
>
> instead of
>
>
>
> *CoordSys Earth Projection 3, 1019, "m", 4.3674866667, 90, 49.8333339,
> 51.1666672333, 150000.01300000001, 5400088.4380000001 Bounds (0, 0)
> (300000, 300000)*
>
>
>
> Thanks for your help !
>
>
>
> Jonathan Beliën
>
> GEO-6
>
>
>
> *De :* Richard Greenwood [mailto:richard.greenwood at gmail.com
> <richard.greenwood at gmail.com>]
> *Envoyé :* mardi 9 mai 2017 01:32
> *À :* Jonathan Beliën <jbe at geo6.be>
> *Cc :* mitab at egroups.com; GDAL List <gdal-dev at lists.osgeo.org>;
> Hellemans, Philippe <phe at geo6.be>
> *Objet :* Re: [gdal-dev] ogr2ogr mapinfo reporjection
>
>
>
> When you say that the coordsys header is wrong, are you looking at it in
> MapInfo or in a text editor? If you look at the MIF file coordinates in a
> text editor do they look like they have been correctly transformed, and it
> is just the header that is wrong?
>
>
>
> On Mon, May 8, 2017 at 7:39 AM, Jonathan Beliën <jbe at geo6.be> wrote:
>
> Hello everyone,
>
>
>
> I struggle to reproject GeoJSON file to TAB (or MIF) file.
>
> The source projection is EPSG:4326 and the destination projection is
> EPSG:31370 (Belge 1972 / Belgian Lambert 72 – Belgium :
> http://epsg.io/31370)
>
>
>
> I searched forums and mailing lists and saw that there was some issues
> with reprojection using Mitab but that it is supposed to be fixed.
>
>
>
> When I try the following command, the coordinates seems to be transformed
> but the « coordsys » header in the TAB (or MIF) file is wrong (WGS84 –
> Non Earth)
>
>
>
> ogr2ogr test.mif test.json -f "MapInfo File" -dsco FORMAT=MIF -s_srs
> EPSG:4326 -t_srs EPSG:31370
>
>
>
> If I understood correctly what I read on the Internet, that’s because
> Mitab does not recognise « EPSG:31370 » ;
>
> I tried to replace « -t_srs EPSG:31370 » by « -t_srs "31370.txt" » where
> « 31370.txt » contained the WKT definition of EPSG:31370 ;
>
> I saw in the ogr2ogr documentation that there is a « MITAB_BOUNDS_FILE »
> parameter but did not find out how to use it (http://www.gdal.org/drv_
> mitab.html) ;
>
>
>
> I also searched in « /ogr/ogrsf_frmts/mitab/mitab_spatialref.cpp » to see
> if « Belgian Lambert 1972 » existed and it does :
>
>
>
> { 0,    1019,"Belgian 1972 7 Parameter",   4, -99.059, 53.322, -112.486,
> -0.419, 0.83, -1.885, 0.999999, 0},
>
>
>
> So I suppose it should be possible to create a MapInfo file projected in
> « Belgiam Lambert 1972 » but I do not understand how ?!
>
>
>
> Any help or idea is welcome !
> Thanks a lot !
>
>
>
> Jonathan Beliën
>
> GEO-6
>
>
>
>
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>
>
>
>
>
> --
>
> Richard W. Greenwood, PLS
> www.greenwoodmap.com
>
> _______________________________________________
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> gdal-dev at lists.osgeo.org
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>



-- 
Richard W. Greenwood, PLS
www.greenwoodmap.com
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