summing rasters with a condition given by other rasters

Hi Eder,

yes, i tried to include na.rm:

sum_segment <- function(x, ...) {
 mean(x[(x[1]+2):(x[2] + 2)], na.rm=TRUE)
} 

but as long my stack contains any NA values, the function will not run with
calc:

s <- calc(b, sum_segment)

Error in .calcTest(x[1:5], fun, na.rm, forcefun, forceapply) : 
  cannot use this function

or

s <- calc(b, sum_segment, na.rm=T)

Error in .calcTest(x[1:5], fun, na.rm, forcefun, forceapply) : 
  cannot use this function. Perhaps add '...' or 'na.rm' to the function
arguments?

not sure how to make the function run and ignore all NAs..





--
View this message in context: http://r-sig-geo.2731867.n2.nabble.com/summing-rasters-with-a-condition-given-by-other-rasters-tp7588222p7588272.html
Sent from the R-sig-geo mailing list archive at Nabble.com.