validCell function

Validity of a cell, column or row number

Simple helper functions to determine if a row, column or cell number is valid for a certain Raster* object

validCell(object, cell) 
validCol(object, colnr) 
validRow(object, rownr)

Arguments

• object: Raster* object (or a SpatialPixels* or SpatialGrid* object)
• cell: cell number(s)
• colnr: column number; or vector of column numbers
• rownr: row number; or vector of row numbers

Returns

logical value

Examples

#using a new default raster (1 degree global)
r <- raster()
validCell(r, c(-1, 0, 1))
validRow(r, c(-1, 1, 100, 10000))