match | R Documentation |
match
returns a Raster* object with the position of the matched values. The cell values are the index of the table argument.
%in%
returns a logical Raster* object indicating if the cells values were matched or not.
match(x, table, nomatch = NA_integer_, incomparables = NULL)
x %in% table
x |
Raster* object |
table |
vector of the values to be matched against |
nomatch |
the value to be returned in the case when no match is found. Note that it is coerced to integer |
incomparables |
a vector of values that cannot be matched. Any value in x matching a value in this vector is assigned the nomatch value. For historical reasons, FALSE is equivalent to NULL |
Raster* object
calc, match
r <- raster(nrow=10, ncol=10)
values(r) <- 1:100
m <- match(r, c(5:10, 50:55))
n <- r %in% c(5:10, 50:55)
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