On Apr 30, 2016, at 9:55 AM, Ogbos Okike <giftedlife2014 at gmail.com> wrote:
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 <btupper at 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The first hit is about pointsToRaster() - it has been replaced by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 <giftedlife2014 at 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