Return range of values in nrrd file (interface to unu minmax command)

NrrdMinMax(filename, blind8 = FALSE, ...)

Arguments

filename	nrrd file containing data
blind8	Assume 8 bit data has range 0-255 (or -127-127), default F.
...	passed to `system` function

c(min,max) or c(NA,NA) like R's range function