Hi Michael,

Looks like you're using the Raster package.  In that package, check out the
resample() function (
http://www.inside-r.org/packages/cran/raster/docs/resample) - looks like
that does what you want.

Make sure both layers are in the same projection - otherwise you can use
projectRaster() instead.

It looks like you haven't defined the projection for the second layer (as
listed above, "coord. ref. : NA") - do that first (use projection() [
http://www.inside-r.org/packages/cran/raster/docs/projection]).
Alternatively, you can define the projection on import with the raster()
command, using the "crs" argument.

Hope that helps.
Mike




On Wed, Jul 9, 2014 at 11:35 AM, Michael Peichl <michael.peichl@ufz.de>
wrote:

> Dear all,
>
> I would like to change the resolution of the following RasterBrick to 100,
> 100.
>
> class       : RasterBrick
> dimensions  : 225, 175, 39375, 720  (nrow, ncol, ncell, nlayers)
> resolution  : 4000, 4000  (x, y)
> extent      : 4038000, 4738000, 5220000, 6120000  (xmin, xmax, ymin, ymax)
> coord. ref. : +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0
> data source : /home/usr/Documents/projects/...
> names       : X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14,
> X15, ...
> z-value     : 1, 720 (min, max)
> varname     : varname
>
> Thereby, the values of each Raster Cell on 4000,4000 resolution should be
> allocated to 40x40 raster cellls, having the same value as the large cells.
> I want to do this, because I want to use a raster on the more detailed
> resolution as mask:
>
> class       : RasterLayer
> dimensions  : 9000, 7000, 6.3e+07  (nrow, ncol, ncell)
> resolution  : 100, 100  (x, y)
> extent      : 4038000, 4738000, 5220000, 6120000  (xmin, xmax, ymin, ymax)
> coord. ref. : NA
> data source : in memory
> names       : layer
> values      : 12, 12  (min, max)
>
> Any recommendations?
>
> Thanks a lot!
>
> Sincerely
> Michael
>
> --
>
> Dipl.-Vw. Michael Peichl
> Ökonomie / Economics
>
> Helmholtz-Zentrum für Umweltforschung GmbH - UFZ
> Helmholtz Centre for Environmental Research GmbH - UFZ
> Permoserstraße 15 / 04318 Leipzig / Germany
> Telefon +49 341 235 1641 / Fax 0341 235 451641
> michael.peichl@ufz.de / www.ufz.de
>
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