Obtain valid argument inputs

These function simply return valid input options for recurring arguments.

validActivationFunctions()

validAgglomerationMethods()

validAlluvialTypes()

validColorPalettes(flatten = FALSE)

validColorSpectra(flatten = FALSE)

validDeaMethods()

validDefaultInstructionSlots()

validDistanceMethods()

validHierarchicalClusterMethods()

validModelNames()

validPadjMethods()

validSpatialMethods()

validUnits()

validUnitsOfArea()

validUnitsOfAreaSI()

validUnitsOfLength()

validUnitsOfLengthSI()

Value

Character vectors or named lists of such.