generateEnvirem {envirem}

Generate ENVIREM rasters

Description

Generates rasters from an input dataset.

Usage

generateEnvirem(
  masterstack,
  solradstack = NULL,
  monthPET = NULL,
  var,
  tempScale = 1,
  precipScale = 1
)

Arguments

masterstack

rasterStack containing all monthly precipitation, min temperature, max temperature, and optionally mean temperature rasters.

solradstack

rasterStack of monthly solar radiation, can be NULL if not needed.

monthPET

rasterStack of monthly potential evapotranspiration. If NULL, will be calculated internally.

var

vector of names of variables to generate, see Details.

tempScale

integer; scaling factor for the temperature data, see envirem for additional details.

precipScale

integer; scaling factor for the precipitation data, see envirem for additional details.

Details

The function verifyRasterNames should be used to verify that the appropriate rasters are present in masterstack.

Possible variables to generate include:

annualPET
aridityIndexThornthwaite
climaticMoistureIndex
continentality
embergerQ
growingDegDays0
growingDegDays5
maxTempColdest
minTempWarmest
meanTempColdest
meanTempWarmest
monthCountByTemp10
PETColdestQuarter
PETDriestQuarter
PETseasonality
PETWarmestQuarter
PETWettestQuarter
thermicityIndex

If var = 'all', then all of the variables will be generated.

Value

rasterStack

Author(s)

Pascal Title

Examples

# Find example rasters
rasterFiles <- list.files(system.file('extdata', package='envirem'), full.names=TRUE)

# create stack of temperature and precipitation rasters
# and stack of solar radiation rasters
solradFiles <- grep('solrad', rasterFiles, value=TRUE)
worldclim <- rast(setdiff(rasterFiles, solradFiles))
solar <- rast(solradFiles)

# set up naming scheme - only precip is different from default
assignNames(precip = 'prec_##')

# generate all possible envirem variables
generateEnvirem(worldclim, solar, var='all', tempScale = 10)

# set back to defaults
assignNames(reset = TRUE)