3

I have a large number of rasters in grid format ("asc"). I created a list of files:

files <- list.files("D:/......../EnvironData", pattern='asc',
                    full.names = TRUE)

Then I want to stack all files:

dataStack <- raster::stack(files)

Unfortunately, I get the following error:

Error in .local(.Object, ...) :

Error in .rasterObjectFromFile(x, band = band, objecttype = "RasterLayer", : Cannot create a RasterLayer object from this file.

All raster files have the same spatial dimension and extent.

  • 1
    Likely one of your files is invalid somehow. Try lapply(seg_along(files), function(x) {print(x); raster(files[x])}) - the last number printed will be the first bad file (or just the last file). – mdsumner Jan 15 '17 at 15:07
  • @mdsumner Thanks for suggestion. I did not find problem in my files. All are perfect. – NoviceStat Jan 15 '17 at 16:02
  • Can you insert the output of the lapply call suggested by mdsummer into your question? – pat-s Jan 15 '17 at 16:05
  • 1
    @pat-s I have 54 rasters, I tried if any of two rasters get stacked. Unfortunately none. variables – NoviceStat Jan 15 '17 at 16:26
  • 1
    raster has some dusty corners, it's expected for something so general. You could use rgdal::readGDAL to read them individually then stack those, and there's another reader for this format in maptools, or maybe sp. The more you can explore and report specifics about the easier to debug. – mdsumner Jan 15 '17 at 21:29
-1

I had the same issue, but changed the NA values for -9999, then it worked!

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