[Gdal-dev] Re: Resample map from C#

[Tomas R]

I ran the code together with the image in the ticket and nothing 
happened to the picture.

But I'm not sure if I am on the right track.

What I would like to do is not reproject the map in anyway. What I am 
after is a possibility to down sample an image/a map using some good 
interpolations technique. My guess is that all I need is the last line 
in the code in the example in the ticket:
> Dataset dsw = drv_out.CreateCopy("CTest.tif", ds, 0, new string[] { 
> "INTERLEAVE=PIXEL",   null });
where I in the string is to provide the interpolation method and the 
size of the copy to save. How to format this string - I haven't got  
clue! Or actually, not even how to format the command line call to 
GDalwarp to use, for example, cubic splines. The correct documentation 
is not easy to find. The doc about gdalwarp options found here:
http://www.gdal.org/gdalwarp.html
doesn't seem to up to date.
Or am I totally of track?

Why use GDAL? Well I have a method using what is available in C# but it 
requires a an image in a format C# can read and it also requires me to 
load whole image to memory. Gdal seems to be able to parse the file and 
why not make use of Gdal when possible?

Yours
Tomas

Tamas Szekeres skrev:
> Tomas,
>
> Currently the interface has only a limited support to this effort.
> Some time ago the only option I've found have been described at this
> ticket:
>
> http://trac.osgeo.org/gdal/ticket/1469
>
> However I had to apply a patch to make this feature work and I don't
> know exactly whether it have eventually been fixed or not. I'd
> appreciate you to make a test, and provide the comment about the
> results to this ticket.
>
>
> Best regards,
>
> Tamas
>
>
> 2007/5/29, Tomas R <monshi at home.se>:
>> Questions, questions. Hope someone will answer..
>>
>> Short one:
>> Is it possible from C# to make use of GDAL to resample a map?  Like
>> GDALWarp can do from the commandline?
>>
>> Example?
>>
>> Yours
>> Tomas
>>
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