[R-sig-Geo] Points to raster

[Raphael Saldanha]

Thanks Michael! This is my first approach for dealing with rasters inside R.

On Thu, Apr 12, 2012 at 11:37 AM, Michael Sumner <mdsumner at gmail.com> wrote:
> The sp and raster packages both have pathways for this.
>
> library(sp)
> coordinates(elev) <- c("x", "y")
> gridded(elev) <- TRUE
>
> See vignette("sp")
>
> Or, using raster package:
>
> library(raster)
> r.elev <- rasterFromXYZ(elev)
>
> In either case, if your coordinates aren't quite regular you'll need
> to explore other options, like the 'tolerance' argument to
> ?SpatialPixelsDataFrame or the 'digits' argument to ?rasterFromXYZ.
>
> Cheers, Mike.
>
> On Fri, Apr 13, 2012 at 12:06 AM, Raphael Saldanha
> <saldanha.plangeo at gmail.com> wrote:
>> Hi!
>>
>> Which is the best way to convert a list of points to a raster? Bellow
>> I have a excerpt from my 'elev' object.
>>
>>           x       y    elev
>> 239937.9 7658988 407.079
>> 239937.9 7658968 411.561
>> 239937.9 7658948 415.924
>> 239937.9 7658928 415.480
>> 239937.9 7658908 414.896
>> 239937.9 7658888 408.602
>> 239937.9 7658868 402.261
>> 239937.9 7658848 393.956
>> 239937.9 7658828 385.692
>> 239937.9 7658808 379.095
>> 239937.9 7658788 372.509
>>
>>
>> Thanks in advance,
>>
>> Raphael Saldanha
>> saldanha.plangeo at gmail.com
>>
>> _______________________________________________
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>
>
>
> --
> Michael Sumner
> Institute for Marine and Antarctic Studies, University of Tasmania
> Hobart, Australia
> e-mail: mdsumner at gmail.com



-- 
Atenciosamente,

Raphael Saldanha
saldanha.plangeo at gmail.com