[R-sig-Geo] Importing subsets of an ASCII file

[Kamran Safi]

Hi Tyler,

sounds as if you need to look into raster{}. Checkout 
http://r-forge.r-project.org/projects/raster/

hope this helps.

Kamran

Tyler Dean Rudolph schrieb:
> I have yet to find a computer robust enough to import my landscape-level
> habitat data in one foul swoop (835 MB).  I tell myself once I do succeed I
> can save it as an R object, at which point it will be much smaller and
> easier to handle, but it seems another option that may be possible is to
> specify the x and y ranges of the SpatialGrid or im file I want to
> import within the import call itself, which would ideally make it easier to
> process for the average machine, at which point I could simply run a loop of
> sorts to progressively extract data for the various subregions of my study
> area.
>
> Now I've been pouring over the archives and it seems to me that earlier I
> ran across an option within some ascii import function where the x and y
> ranges can be specified.  Does this ring a bell for anyone?  It might be
> just the ticket in this type of situation.  The tif file is even bigger so
> that won't work and I'm not clear on what else would at the moment.
>
> Tyler
>
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