[R-sig-Geo] Confusing error message by raster package

[Agustin Lobo]

Hi!

I entered
 > r1 <- raster("SDIM160.tif", band=1)
Error in .rasterObjectFromFile(x, band = band, values = values, proj = 
proj,  :
   Cannot create RasterLayer object. There is a '.gri' file but no 
'.grd' file. GDAL does not recognize the '.gri' file

I was very confused by the error message, after all the problem was that 
the file simply does not exist, it was misspelled:

 > r1 <- raster("SDIM0160.tif", band=1)
CPL Warning 1: TIFFReadDirectory:Unknown field with tag 37717 (0x9355) 
encountered

The error message in rgdal is correct:

 > readGDAL("SDIM160.tif")
CPL ERROR 4: `SDIM160.tif' does not exist in the file system,
and is not recognised as a supported dataset name.

Error in .local(.Object, ...) :
   `SDIM160.tif' does not exist in the file system,
and is not recognised as a supported dataset name.


Could the error message be modified?

Thanks

Agus