Compute the coefficient of variation (expressed as a percentage). If there is only a single value, sd is NA and cv returns NA if aszero=FALSE (the default). However, if (aszero=TRUE), cv returns 0.
Usage
## S3 method for class 'ANY':
cv(x, ..., aszero=FALSE, na.rm = FALSE)
## S3 method for class 'Raster':
cv(x, ..., aszero=FALSE, na.rm = FALSE)
Arguments
x
A vector of numbers (typically integers for modal), or a Raster* object
...
additional (vectors of) numbers, or Raster objects
aszero
logical. If TRUE, a zero is returned (rather than an NA) if the cv of single value is computed