Hi Roberto,
Sorry for not getting back to your previous email.
> 1. The default interpolator is NATURAL_NEIGHBOR
Yes, this is correct.
> 2. NATURAL_NEIGHBOR interpolator masks outputs and gives no value at
> all to those pixels without points
I am not sure it is correct to say they are masked but in areas without data it
is not possible for the natural neighbour algorithm to calculate a value so a
NaN value is outputted. There a some data values outputted around the main data
area thought so it is not completely masked.
> 3. NEAREST_NEIGHBOR does not mask outputs and gives values to all the pixels
Yes, there is always a nearest point so it calculates a value for all pixels.
I have quickly updated the TIN_PLANE algorithm as I had some code from else
where. It is now working (you need to update your version of spdlib from the
bitbucket repo) but I would say it doesn’t produce great results, I might need
to look at it again some time and see if I can improve. From my experience
natural neighbour produces the best results under almost all circumstances.
Best wishes,
Pete
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* Dr Pete Bunting
* Senior Lecturer in Remote Sensing
* Earth Observation and Ecosystem Dynamics Group
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On 7 Nov 2013, at 03:53, Roberto Antolín <[email protected]> wrote:
> Hello Pete,
>
> On Fri, Oct 11, 2013 at 05:18:42PM +0100, Roberto Antolín wrote:
>> Also I got an error when I tried TIN_PLANE interpolator:
>>
>> "Started.O.Error: SPDTINPlaneFitInterpolator is currently not available"
>
> I looked into the code and, in fact, that part is commented. I've tried to
> uncomment it but it does not compile. Have you planned to implement the
> TIN_PLANE interpolation?
>
> Regards,
> Roberto
>
> --
> Roberto Antolín
> https://twitter.com/Tolanss
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