The raster functions for cell abstraction

Michael Sumner

2017-12-11

The following functions in the raster package are designed to work with cell indexes.

fun(r, cell)

• [
• adjacent
• colFromCell
• rasterFromCells
• rowColFromCell
  
• rowFromCell
• validCell
• xyFromCell
• xFromCell
• yFromCell

The following functions will return cell indexes.

fun(r, query) to return cells

• cellFromCol
• cellFromLine
• cellFromPolygon
• cellFromRow
• cellFromRowCol
• cellFromRowColCombine
• cellFromXY
• cellsFromExtent
• fourCellsFromXY

Others

• setValues will work as fun(r, vals, index) only for RasterLayerSparse

The sparse raster is a under-used feature and needs to be fleshed out.