Dear All,
Thanks for your inputs. I did replace pointsToRaster () with
raster::rasterize(). Below is part of my script.
But I got another error:
Error in (function (classes, fdef, mtable) :
unable to find an inherited method for function ‘rasterize’ for
signature ‘"RasterLayer", "matrix"’
Thank you for more inputs.
Ogbos
k<-read.table("Lat05w3.txt")
colnames(k)<-c("y","x")
xy<-cbind(k$x,k$y)
library(raster)
r<-raster()
#library(sp)
pr<-raster::rasterize(r,xy)
#pr<-pointsToRaster(r,xy)
library(maps)
w = map("world")
wc = cbind(w$x, w$y)
wc=wc[!is.na(wc[,1]),]
write.table(wc, file = "my.fileb", sep=" ",row=FALSE,col=FALSE)
my<-read.table("my.out",col.names=c("a","b"))
rena = function(X,Z){
Y=rep(NA,length(X))
Y[!is.na(X)]=Z
Y
}
On 4/30/16, Ben Tupper <btup...@bigelow.org> wrote:
> Hi,
>
> A terrific resource for this type of issue (and pretty much anything related
> to R) is http://rseek.org/ I'm sure I use it at least daily. Check out
> ...
>
> http://rseek.org/?q=pointsToRaster
>
> The first hit is about pointsToRaster() - it has been replaced by
> raster::rasterize()
>
> Cheers,
> Ben
>
>> On Apr 30, 2016, at 4:28 AM, Ogbos Okike <giftedlife2...@gmail.com>
>> wrote:
>>
>> Dear All,
>> I have a script that draws longitude and latitude of lightning
>> occurrence. This script was running fine before. But when I changed my
>> system and do a fresh install on another laptop, this error persist.
>> source("script")
>> Error in eval(expr, envir, enclos) :
>> could not find function "pointsToRaster"
>>
>> I have tried to see if there is any other package I need to install
>> to take of the problem, I could not see. Already, when I installed
>> raster, it installed its dependencies such as sp.
>> Can any body please bail me out.
>>
>> Thanks
>> Ogbos
>>
>> ______________________________________________
>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
> Ben Tupper
> Bigelow Laboratory for Ocean Sciences
> 60 Bigelow Drive, P.O. Box 380
> East Boothbay, Maine 04544
> http://www.bigelow.org
>
>
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
