[R-sig-Geo] R crashes performing gstat IDW with omax argument

[Tim Appelhans]

Hey Mark,
I'm running R 3.1.2. on Ubuntu 12.04 and see the following with your 
example:

*** glibc detected *** /usr/lib/R/bin/exec/R: free(): invalid next size 
(fast): 0x00000000073acab0 ***

So nearly, though not exactly the same....

I have no idea what it means though, sorry

Tim

On 11/24/2014 05:19 AM, Mark Wynter wrote:
>
> I'm trying to use gstat's IDW function with an omax argument
> Addition of the omax argument causes R to crash - works fine without it.
>
> *** Error in `/usr/lib/R/bin/exec/R': corrupted double-linked list:
> 0x00000000038c8540 ***
> I'm running R v 3.1 on Ubuntu 12.04
>
> Can anyone else replicate this error on R 3.1 with the following script?
>
> #Crashtest
> #Libraries
> library(sp)
> library(gstat)
> library(RColorBrewer)
>
> #make some random xyz point data
> x = round(runif(100), 2)
> y = round(runif(100), 2)
> z = data.frame(rainfall=round(runif(100), 2)*1000)
>
> #convert to spatial points data frame
> xy = cbind(x, y)
> xy.sp = SpatialPoints(xy)
> xy.spdf = SpatialPointsDataFrame(xy.sp, z)
>
> #prepare grid surface
> x.range <- range(xy.spdf at coords[,1])
> y.range <- range(xy.spdf at coords[,2])
> grd <- expand.grid(x=seq(from=x.range[1]-0.5, to=x.range[2]+0.5, by=0.01),
> y=seq(from=y.range[1]-0.5, to=y.range[2]+0.5, by=0.01) )
> coordinates(grd) <- ~ x+y
> gridded(grd) <- TRUE
>
> #perform IDW interpolation and plot results
> precip.pal <- colorRampPalette(brewer.pal(7, name="Blues"))
> precip.idw3 <- idw(rainfall~1, xy.spdf, grd, idp = 3, maxdist=0.2, omax=2)
> spplot(precip.idw3, "var1.pred", col.regions=precip.pal, pretty=TRUE,
> main="Rainfall Interpolated (mm)", labels=TRUE,
>        sp.layout=list("sp.points", xy.spdf, col="red", first=FALSE))
>
> Sent from my iPhone
>
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-- 
#####################################
Tim Appelhans
Department of Geography
Environmental Informatics
Philipps Universität Marburg
Deutschhausstraße 12
35032 Marburg (Paketpost: 35037 Marburg)
Germany

Tel +49 (0) 6421 28-25957

http://environmentalinformatics-marburg.de/