[Qgis-developer] Are there convenience functions to do bilinear or cubic raster sampling?

[Anita Graser]

Hi Denis,
That looks extremely useful. Thanks a lot! I will try it as soon as
possible.
Best wishes
Anita
On Jun 25, 2014 7:23 AM, "Denis Rouzaud" <denis.rouzaud at gmail.com> wrote:

> Hi Anita,
>
> I don't know if it can be useful, but you'll find the python code here to
> do interpolation (nearest, linear, bicubic) on single points:
> https://github.com/3nids/rasterinterpolation/blob/master/core/
> rasterinterpolator.py
>
> Cheers,
>
> Denis
>
> On 24.06.2014 19:32, Anita Graser wrote:
>
>> Thanks everyone for your answers!
>>
>>  On Tue, Jun 24, 2014 at 12:31 PM, Denis Rouzaud <denis.rouzaud at gmail.com>
>>> wrote:
>>>
>>>> But, you can have such functionality through processing or via plugins
>>>> (e.g.
>>>> Raster Interpolation).
>>>>
>>> True, but I would like to expand my profile from line script with
>> these interpolation methods so using other tools is not really an
>> option.
>>
>>  Anyway, that would be an idea to bring such functionality in core!
>>>>
>>> On Tue, Jun 24, 2014 at 7:46 AM, Martin Dobias <wonder.sk at gmail.com>
>> wrote:
>>
>>> There are QgsBilinearRasterResampler and QgsCubicRasterResampler
>>> classes for bilinear/cubic resampling used for raster rendering. As of
>>> now they operate only on the whole raster image, not with individual
>>> points.
>>>
>> Exactly, something like those raster classes but working on individual
>> points would be great to have in core and in the python API. Do you
>> think this is a lot of work or is the raster code reusable?
>>
>> Should I open feature requests for this?
>>
>> Best wishes,
>> Anita
>>
>
>
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