[R-sig-Geo] Downscaling a raster map

[Francesco Carotenuto]

A good solution could be using regression kriging with current altitude map as covariate.
 Dr. Francesco Carotenuto (Ph.D.)
Department of Earth Sciences Federico II University Largo S. Marcellino 10, 80138 NAPLES (ITALY)
https://www.researchgate.net/profile/Francesco_Carotenuto 

    Il Lunedì 28 Novembre 2016 12:08, Francesco Carotenuto via R-sig-Geo <r-sig-geo at r-project.org> ha scritto:
 

 Hi Loïc,“disaggregate”or “resample” functions of “raster” package use bilinear or nbg interpolation toreconstruct values in the new cells. I would apply to the nearby-reconstructedcells the same relationship found in the actual altitudinal map at the samelocation.I hope Iexplained it well. Dr. Francesco Carotenuto (Ph.D.)
Department of Earth Sciences Federico II University Largo S. Marcellino 10, 80138 NAPLES (ITALY)
https://www.researchgate.net/profile/Francesco_Carotenuto 

    Il Lunedì 28 Novembre 2016 11:18, Loïc Dutrieux <loic.dutrieux at conabio.gob.mx> ha scritto:
 

 
On 28/11/2016 10:26, Francesco Carotenuto via R-sig-Geo wrote:
> Hi everyone,I'm looking for a method to downscale a 250x250 km wide resolution altitudemap of the past (about 3 million years ago) to a finer resolution. I would the spatialstructure of the downscaled map to resemble the actual altitude.

You mean that it should use current elevation data like from e.g. SRTM?
Otherwise you may try disaggregate from the raster package.

Cheers,
Loïc

Is there a way?Thank you,Francesco. Dr. Francesco Carotenuto (Ph.D.)
Department of Earth Sciences
> Federico II University Largo S. Marcellino 10, 80138 NAPLES (ITALY) 
> https://www.researchgate.net/profile/Francesco_Carotenuto
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