I'm using the raster package version 0.8.9-17 on R2.9.0. While using the
function projectRaster I'm projecting my data and need to output a new ESRI
grid (.asc).  The following code I think should do the job, but it is
writing two different files (.grd and .gri) instead of the .asc I need.  Is
this a bug?

asc.in.dir<-"C:\\..\\raster.directory"
asc.out.dir<-"C:\\...\\raster.directory\\UTMprojected"
asc.in.files<-dir(asc.in.dir, pattern='.asc$')
r<-raster(paste(asc.in.dir, "\\", asc.in.files[i], sep=""))
r[]<-1:ncell(r)
projection(r) <- "+proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0"
newproj <- "+proj=sinu"
projext <- projectExtent(object=r, projs=newproj)
projras <- projectRaster(from=r, to=projext, method="ngb", filetype="ascii",

  filename=paste(asc.out.dir, "\\UTM <file://utm/>", asc.in.files[i],
sep=""))

Tim

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