[R] Saving a map as a postscript file

[David Winsemius]

On Feb 28, 2014, at 8:22 AM, Ciara O'Hara wrote:

> Hi all, 
> I am running the script below to produce a map. The problem I am having is saving it as a postscript file. A postscript file is created, but it is blank. I have also run this is linux (with different paths) and I get the same thing (blank postscript file). Does anyone know how to do this? 
> P.S. the 'There were 50 or more warnings (use warnings() to see the first 50)' error doesn't seem to be making any difference to the map so don't worry about that. The legend is not working either, but one thing at a time.
> Thanks,Ciara
>> library(ncdf)> library(maps)> library(mapdata)> library(maptools)> library(RColorBrewer)> shapefile<-readShapeLines("C:\\Users\\sophysics\\Desktop\\IRL_adm\\IRL_adm1.shp")> file<-open.ncdf("C:\\Users\\sophysics\\Desktop\\TempData\\average\\average_1961.nc")> data<-get.var.ncdf(file,"var61")> lat<-get.var.ncdf(file,"lat")> lon<-get.var.ncdf(file,"lon")> postscript("Average_1961.ps")> map("worldHires","Ireland",col="purple",fill=FALSE,box=NULL)> image(lon,lat,data,col=rev(brewer.pal(9,"RdBu")),xaxt="n",yaxt="n",ann=FALSE,box=NULL,xlab=NULL,ylab=NULL,asp=-1)> plot(shapefile,add=TRUE,border=FALSE)There were 50 or more warnings (use warnings() to see the first 50)> title(main="Average temperature 1961")> legend("bottom",legend=leg,title = "Temp",col=rev(brewer.pal(9,"RdBu")))Error in as.graphicsAnnot(legend) : object 'leg' not found> dev.off()null device           1  		 	   		  
> 	[[alternative HTML version deleted]]

You apparently find it difficult to read  the Posting Guide and the error message displayed on the console.

> 
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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.

Following advice above would help greatly in your efforts at communicating.

-- 

David Winsemius
Alameda, CA, USA