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Can you just use PlotShapes, comparing the user date with DateNum?
Enter parameter values in DateNum format ( see
http://www.amibroker.com/guide/afl/afl_view.php?id=37 ).
D1 = Param("D1", 1081108, 1080101, 1081231, 1);
D2 = Param("D2", 1081108, 1080101, 1081231, 1);
Plot(Close, "Close", colorRed);
PlotShapes(IIF(D1 == DateNum(), shapeStar, shapeNone), colorGreen);
PlotShapes(IIF(D2 == DateNum(), shapeSquare, shapeNone), colorBlue);
The above will draw a star on the first user date and a square on the
second user date.
Mike
--- In amibroker@xxxxxxxxxxxxxxx, "Blair" <snoopy.pa30@xxx> wrote:
>
> Group,
>
> I am trying to figure out a good (efficient) way to match several
user
> input dates to control placement of symbols on the screen.
>
> I currently have a loop that checks every user input date against
the
> current datenumber. Unfortunately even for my very small test
sample
> of 4 input dates, it takes a LONG time to run (minutes). I don't
even
> want to try scaling it up to the 20+ dates that I would use on a
> typical analysis that I am doing.
>
> So far my ideas are to try the following:
> 1. Sort the user input dates and then only compare in order
> 2. Break processing as soon as match found
> 3. Find a different way to determine date matching
>
> I am currently working on the Break processing (trying a While
loop),
> but would really appreciate any guidance offered.
>
> Thanks
>
> Blair
>
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