[R-sig-Geo] problem with expand function (raster package)

Julian Burgos julian at hafro.is
Mon May 7 13:49:39 CEST 2012


Apologies again, this was the right list.  I need more coffee.

On mán  7.maí 2012 11:47, Julian Burgos wrote:
> Sorry, posted to the wrong list.
>
> On mán  7.maí 2012 11:44, Julian Burgos wrote:
>> Dear list,
>>
>> I cannot figure this out.  I am trying to extend a raster object, 
>> using the "extend" function (from the raster package), but the 
>> extension of the raster does not change.  Here is an example:
>>
>> ##############################
>> set.seed(100)
>> myraster <- raster(ncols=4, nrows=4)
>> myraster[] <-  sample(1:10,ncell(eff),replace=T)
>> extent(myraster)
>>
>> ex <- extent(myraster)+2
>> eff <- expand(myraster, ex)
>> extent(myraster)
>> ##############################
>>
>> As you can see, the extent of "myraster" does not change.   What I am 
>> doing wrong?
>> Many thanks,
>>
>> Julian
>>
>
>


-- 
Julian Mariano Burgos, PhD
Hafrannsóknastofnunin/Marine Research Institute
Skúlagata 4, 121 Reykjavík, Iceland
Sími/Telephone : +354-5752037
Bréfsími/Telefax:  +354-5752001
Netfang/Email: julian at hafro.is



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