nodata: Query raster files for their NoData values
In johnbaums/things: Mostly spatial things

Description Usage Arguments Value Examples

Return the NoData value associated with one or more raster files.

1	nodata(srcfile, simplify = TRUE)

`srcfile`	A character vector of file paths to the raster files to be queried.
`simplify`	Logical. If `TRUE`, then when all files referred to in `srcfile` have the same number of bands, the returned value will be simplified to an array (if `srcfile` refers to more than one file), or an atomic vector (if `srcfile` refers to a single file).

A list with as many elements as the number of files specified in srcfile. Each list element contains a single vector whose values are the NoData values for each band of the corresponding raster file. If GDAL is unable to identify the NoData value, NA will be returned.

library(raster)
r <- raster(matrix(runif(100), ncol=10))
NAvalue(r) <- -9999
writeRaster(r, f <- tempfile(fileext='.tif'))
nodata(f)
nodata(c(f, f, f))