Description Usage Arguments Details Value Author(s) See Also Examples
View source: R/weighted.mean.circular.R
Returns the weighetd mean direction of a vector of circular data.
1 2 3  ## S3 method for class 'circular'
weighted.mean(x, w, na.rm=FALSE,
control.circular=list(), ...)

x 
a vector. The object is coerced to class

w 
a numerical vector of weights the same length as 
na.rm 
logical, indicating if 
control.circular 
the attribute of the resulting object. 
... 
further arguments passed to or from other methods. 
Each observation is treated as a unit vector, or point on the unit
circle. The resultant vector of the observations is found, and the
direction of the resultant vector is returned. An NA
is
returned if the weighted resultant length is less than
.Machine
.
If w
is missing then all elements of x
are given the same
weight, otherwise the weights coerced to numeric by as.numeric
and normalized to sum to one.
Missing values in w
are not handled specially and so give a
missing value as the result. However, zero weights are handled
specially and the corresponding x
values are omitted from the
computation.
Returns the weighted mean direction of the data as an object of class circular
with the attribute given by control.circular
or from x
if missed in control.circular
.
Claudio Agostinelli
1 2 3 4 
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