locate

Source: cli/plot/locate.pro

 locate
        Mark position(s) on a plot.

 Usage:
        locate[, <keys>]

 Keywords:
        positions       struct  output  A named variable to hold the
                                        list of marked positions.
        one_value                       If set, then only mark one
                                        position and return.
        force                           If set then force locate to
                                        run even if the current
                                        dataset thinks its not
                                        ready. (Only use this option
                                        if you know that you've got a
                                        valid stack).

 History:
        Original: 30/8/00; SJT
        Added force key: 14/11/00; SJT
        Use dataset object if available: 27/5/02; SJT