updateDiscreteAreaValue: Update value of discreteArea object.
Description
Update value(s) of one or some areas of a discreteArea object.
Usage
updateDiscreteAreaValue(x, newval)
Value
a new discreteArea.
Arguments
x
a discreteArea object: list(areaValues, discretePoints), where
areaValues: data.frame(areaId,centx,centy,value)
discretePoints: data.frame(areaId,ptx,pty,weight)