[R] Could not find function "pointsToRaster"

[Ben Tupper]

Hi,

I think you need to check the order of your arguments to rasterize().  See the documentation with ?rasterize and compare to what you did below.

Cheers,
Ben

 
> 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 The first hit is about pointsToRaster() - it has been replaced by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
>>> 
>>> ______________________________________________
>>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
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>>> 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
>> 
>> 

Ben Tupper
Bigelow Laboratory for Ocean Sciences
60 Bigelow Drive, P.O. Box 380
East Boothbay, Maine 04544
http://www.bigelow.org