total-methods: Total number of cells in a Raster* object
In simonmoulds/lulcc2: Land Use Change Modelling in R

Description Usage Arguments Details Value Examples

Count the area or number of cells belonging to each category in a Raster* object.

total(x, ...)

## S4 method for signature 'DiscreteLulcRasterStack'
total(x, categories, ...)

## S4 method for signature 'ContinuousLulcRasterStack'
total(x, categories, ...)

## S4 method for signature 'Raster'
total(x, categories, ...)

`x`	Raster* object
`...`	additional arguments (none)
`categories`	numeric vector containing land use categories. Only cells belonging to these categories will be counted

If x is a DiscreteLulcRasterStack object this function returns the number of cells belonging to each category. If x is a ContinuousLulcRasterStack object the function returns the sum of the fractions of the various land use categories.

A list containing the following components:

total: a matrix containing the total number of cells belonging to each category. Rows represent layers in the input Raster* object
categories: the categories included in the calculation

## Sibuyan Island

lu <- DiscreteLulcRasterStack(x=stack(sibuyan$maps[1:2]),
                              categories=c(1,2,3,4,5),
                              labels=c("forest","coconut","grass","rice","other"),
                              t=c(0,14))

total(x=lu)
total(x=lu[[1]])
total(x=lu[[2]])