[gdal-dev] gridding binary data

[David Hoese]

Ah sorry about that.  I thought OGR formats and GDAL Raster Formats were 
the same thing.  Thank you.

On 1/23/13 12:12 PM, Etienne Tourigny wrote:
> gdal_grid takes a vector file (e.g. shapefile) as input, it cannot
> take a raster (gtiff) as input
>
> please read the documentation before asking other questions
>
> http://www.gdal.org/gdal_grid.html
>
> Etienne
>
> On Wed, Jan 23, 2013 at 2:57 PM, David Hoese <dhoese at gmail.com> wrote:
>> Hi Norman,
>>
>> Yes this sounds like it should work.  I'll try it when I get a chance.  If I
>> made a geotiff with no navigation(WKT) and had X,Y,Z as individual bands
>> would that work?  How do I tell gdal_grid which dimension or band is X,
>> which is Y, and which is Z?  Thanks.
>>
>> Could you please CC me in any replies, I get the digest and it's easier to
>> reply if I get the original email.
>>
>> -Dave
>>
>>
>> On 1/23/13 10:30 AM, nhv at cape.com wrote:
>>> Dave
>>>
>>> Seems to me this is a point not a raster process you are looking for
>>>
>>> e.g.  How do I make a surface from a bunch of discrete points ?
>>>
>>> So instead of having 3 bands of raster you want a stream of XYZ triplets
>>> you can then submit these to gdal_grid or other tools that work with
>>> discrete
>>> data
>>>
>>>
>>> pseudo python  assuming you have read your files into numpy arrays
>>>
>>> XYZ  = array( zip( bandX.flatten(), bandY.flatten(), bandZ.flatten() ) )
>>>
>>> convert XYZ to any OGR format
>>>
>>> call gdal_grid
>>>
>>> HTH
>>>
>>> Norman
>>
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