rcl function

Combine row, column, and layer numbers

Get a matrix with the combination of row, column, and layer numbers

## S4 method for signature 'SpatRaster'
rcl(x, row=NULL, col=NULL, lyr=NULL)

Arguments

• x: SpatRaster
• row: positive integer that are row number(s), a list thereof, or NULL for all rows
• col: as above for columns
• lyr: as above for layers

Details

If a list is used for at least one of row, col or lyr, these are evaluated in parallel. That is combinations are made for each list element, not across list elements. If, in this case another argument is not a list it has to have either length 1 (used for all cases) or have the same length as the (longest) list, in which case the value is coerced into a list with as.list

If multiple arguments are a list but they have different lengths, theyare recycled to the longest list.

Returns

matrix

See Also

rowColCombine, cellFromRowCol

Examples

x <- rast(ncol=5, nrow=5, nlyr=2)
values(x) <- 1:size(x)

rcl(x, 1, 2:3, 1:2)

i <- rcl(x, 1, list(1:2, 3:4), 1:2)
i

# get the values for these cells
x[i]