The MEAN function computes the mean of a numeric vector. MEAN calls the IDL function MOMENT.
Examples
x = [65, 63, 67, 64, 68, 62, 70, 66, 68, 67, 69, 71, 66, 65, 70]
result = MEAN(x)
PRINT, result
IDL prints:
66.7333
Syntax
Result = MEAN( X
[, DIMENSION=value]
[, /DOUBLE] [, /NAN] )
Return Value
Returns the average value of a set of numbers.
Arguments
X
An n-element, integer, double-precision or floating-point vector.
Keywords
DIMENSION
Set this keyword to a scalar indicating the dimension across which to calculate the mean. If this keyword is not present or is zero, then the mean is computed across all dimensions of the input array. If this keyword is present, then the mean is only calculated across a single dimension. In this case the result is an array with one less dimension than the input.
DOUBLE
If this keyword is set, computations are done in double precision arithmetic.
NAN
Set this keyword to cause the routine to check for occurrences of the IEEE floating-point values NaN or Infinity in the input data. Elements with the value NaN or Infinity are treated as missing data.
Version History
5.1 |
Introduced |
8.0 |
Added DIMENSION keyword
|
See Also
KURTOSIS, MEANABSDEV, MOMENT, STDDEV, SKEWNESS, VARIANCE