function psf
Return the average (or median, minimum, maximum) of several stars in an image. The stars locations are given in the second argument.
Syntax
result = psf(X, POSITIONS [, /median] [, /average] [, /minimum] [, /maximum])
Arguments
| X: | A matrix. |
| POSITIONS: | A 2xn matrix giving the positions of the stars to be averaged. |
Switches
| /median: | Return the median of the stars (default). |
| /average: | Return the average of the stars. |
| /minimum: | Return the minimum of the stars. |
| /maximum: | Return the maximum of the stars. |