function getfitskey
Returns the value of specified FITS key in the header of X. The returned type can be either a string, an integer number or a real number. If the specified key does not exist, an empty string is returned.
Syntax
result = getfitskey(X, KEY [, extension] [, /text])
Arguments
| X: | A matrix or a FITS file. |
| KEY: | A string. |
| extension: | Integer number specifying which extension to read. |
Switches
| text: | Return the fits key as a string. |