rowSums function

rowSums and colSums for Raster objects

Sum values of Raster objects by row or column. methods

## S4 method for signature 'Raster'
rowSums(x, na.rm=FALSE, dims=1L,...) 
## S4 method for signature 'Raster'
colSums(x, na.rm=FALSE, dims=1L,...)

Arguments

• x: Raster* object
• na.rm: logical. If TRUE, NA values are ignored
• dims: this argument is ignored
• ...: additional arguments (none implemented)

Returns

vector (if x is a RasterLayer) or matrix

See Also

See cellStats for summing all cells values

Examples

r <- raster(ncols=2, nrows=5)
values(r) <- 1:10
as.matrix(r)
rowSums(r)
colSums(r)