[R-sig-Geo] Size limit for krige.conv

[pebesma at geog.uu.nl]

Alexander,

package gstat has the option to krige in a local neighbourhood,
so you don't need to build (and invert!) a 10000x10000 = 800+ Mb
matrix. Look at the options maxdist or nmax in function krige.

Hth,
--
Edzer

> On Fri, 10 Jun 2005 Alexander.Herr at csiro.au wrote:
>
>> Hi list,
>>
>> I get "Error: cannot allocate vector of size 390585 Kb". The file has
>> 10000 locations. Is there a size limit to krige.conv?
>
> krige.conv() in the geoR package has size constraints - I believe that the
> full interpoint matrix is needed, and its strengths are in handling
> smaller but challenging data sets. Unless you have to use this function,
> paerhaps you could consider alternatives in the gstat or fields packages,
> which can be given arguments which will let you use large data sets.
>
>>
>> Thanks Herry
>>
>> --------------------------------------------
>> Alexander Herr - Herry
>> Northern Futures
>> Davies Laboratory, CSIRO
>> PMB, Aitkenvale, QLD 4814
>> Phone (07) 4753 8510
>> Fax   (07) 4753 8650
>> Home: http://herry.ausbats.org.au
>> Webadmin ABS: http://ausbats.org.au
>> Sustainable Ecosystems: http://www.cse.csiro.au/
>>
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>
> --
> Roger Bivand
> Economic Geography Section, Department of Economics, Norwegian School of
> Economics and Business Administration, Helleveien 30, N-5045 Bergen,
> Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
> e-mail: Roger.Bivand at nhh.no
>
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