wpRasterStackCalc: wpRasterStackCalc function to calculate the values for a new...
In wpgp/wpUtilities: Data Analysis and Modeling Package from WorldPop

Description Usage Arguments Value Examples

wpRasterStackCalc function to calculate the values for a new Raster object from other RasterStack object using a formula. Function is paralyzed and suitable for big rasters

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wpRasterStackCalc(x, fun = "mean", filename = rasterTmpFile(),
  NAflag = NULL, datatype = NULL, overwrite = TRUE, cores = NULL,
  minblk = NULL, cblk = NULL, silent = TRUE, na.rm)

`x`	RasterStack object
`fun`	is typically a function that can take a single vector as input
`filename`	File of a new raster file.
`NAflag`	NO data value will be used for a new raster
`datatype`	Type of raster. Avalible are INT1S/INT2S/INT4S/FLT4S/LOG1S/INT1U/INT2U/INT4U/FLT8S
`overwrite`	Overwrite existing file
`cores`	Integer. Number of cores for parallel calculation
`minblk`	Integer. Minimum number of blocks. If NULL then it will be calculated automaticly
`cblk`	Integer. param to controle min number of blocks during paralisation
`silent`	If FALSE then the progress will be shown
`na.rm`	Optional

Raster* object

wpRasterStackCalc( x, fun='sum')
wpRasterStackCalc( x, fun=function(x){ sum(as.numeric(x))})
wpRasterStackCalc( x, fun=function(x){ (x[1]-x[2])/x[3]})
wpRasterStackCalc( x, fun=function(x){ if (any(!is.na(x))) { return(0) } else { return(NA) }}