Re: [gdal-dev] Spatial Resolution from img file

2015-07-30 Thread Kyle Shannon 
On Thu, Jul 30, 2015 at 5:03 AM, user gdal userofg...@gmail.com wrote:
 Dear friends,
 I have a geo ref. ERDAS img file. How to obtain its spatial resolution
 programmatically (C++)?

 One suggestion I received was to refer to gdalinfo.c However I couldn't get
 the required information in gdalinfo.c. I also felt it to be unclear. What I
 have seen in gdalinfo is how to get columns, rows etc. (for which we needn't
 visit the gdalinfo program).

It's in there, the program prints out:

...
Pixel Sizes = (dx,-dy)
...

So it has to have the code.


 I expected something like GetXResolution(..) and GetYResolution(...) kind of
 situation. But...

The information you are looking for is contained in the geotranform
matrix available through

GDALGetGeoTransform(GDALDatasetH, double*);

See the api tutorial for more information:

http://gdal.org/gdal_tutorial.html


 Any help, please!

 With thanks,

 Yours sincerely,

 B. Ramesh

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-- 
Kyle
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Re: [gdal-dev] Motion: Adopt FRC48: Geographical networks support

2015-07-30 Thread Dmitry Baryshnikov 

Hi,

now we have +3 for adopt RFC48: Even, Jukka and Tamas

Also I merged gnm with last trunk. Travis CI passed - 
https://github.com/OSGeo/gdal/pull/60


Best regards,
Dmitry


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[gdal-dev] Spatial Resolution from img file

2015-07-30 Thread user gdal 
Dear friends,
I have a geo ref. ERDAS img file. How to obtain its spatial resolution
programmatically (C++)?

One suggestion I received was to refer to gdalinfo.c However I couldn't get
the required information in gdalinfo.c. I also felt it to be unclear. What
I have seen in gdalinfo is how to get columns, rows etc. (for which we
needn't visit the gdalinfo program).

I expected something like GetXResolution(..) and GetYResolution(...) kind
of situation. But...

Any help, please!

With
thanks,


Yours sincerely,

B. Ramesh
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