From: Walter Roberson on
someone wrote:
> esiyok <oesiyok(a)gmail.com> wrote in message
> <7ca66452-29e5-4e87-88bf-41d6d57a45b0(a)x42g2000vba.googlegroups.com>...
>> hi everyone,
>> i have a graphic and i want to mark some point in this graphic. this
>> is bandwidth vs BER graphic . and i want to mark for example (9,2)
>> point.
>
> hold on
> plot(9,2,'*')

Or since several points are to be marked, scatter() would probably be appropriate.