GETPROP Retrieve value of a property

     VAL=GETPROP(DATA,PROP)

 INPUT
    DATA     SDDATA object
    PROP     string property name

 OUTPUT
    VAL      property value

 DESCRIPTION
 GETPROP returns value of property PROP in the data set DATA.
 GETPROP works for any property type (sample, feature or data).

 SEE ALSO
 SETPROP, GETPROPLIST