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...ith colour. Can anyone help me with this problem? Thank you in advance! This is part of my code: minlon<-4.5 maxlon<-12 minlat<-46.5 maxlat<-52.5 gt=GridTopology(cellcentre.offset=c(5.75,47.5),cellsize=c(2.5,2),cells.dim=c(3,3)) grd=SpatialGrid(gt,proj4string = CRS(as.character(NA))) gridparameters(grd) gd<-as.data.frame(grd,"SpatialGrid") h<-season_djf h<-as.data.frame(h) djf.att=SpatialPointsDataFrame(gd,h) gridded(djf.att)=TRUE spplot(djf.att, col.regions = colorRampPalette(c("red","orange", "yellow", "lightblue", "blue&q...

R-geographers... I'm trying to solve a problem to implement a line-by-line tiled processing using RGDAL (read 1 line of an image, process the one line, write one line of the image to a binary file). Everything except for the final step I'm able to do using a combination of RGDAL and r-base commands. Below is the basic structure, the input file "elev" can be any image file