Re: placing a marker

From: Otto Schaile <Otto.Schaile_at_Physik.uni-muenchen.de>
Date: Wed, 07 Jun 2006 10:12:22 +0200

Hi Roger,
how about this macro:
void tm()
{

    TCanvas * c1 = new TCanvas("c1", "Markers", 100,100, 500, 500);     c1->Range(0, 0, 100, 100);
    TMarker *m;
    Double_t x, y;
    Double_t d2r = TMath::Pi() / 180;
    Style_t mstyle = 20;
    for (Double_t ang = 0; ang < 360; ang += 30) {

       x = 50 + 30 * TMath::Cos(d2r * ang);
       y = 50 + 30 * TMath::Sin(d2r * ang);
       m = new TMarker(x, y, mstyle);
       mstyle++;
       m->Draw();

    }
    c1->Modified();
    c1->Update();
}

Cheers
Otto

Roger Mason wrote:
> Hello,
>
> Is there a programmatic way to place a marker at an arbitrary position
> on a canvas?
>
> I grepped through the tutorials for "Mark" without success.
>
> Thanks,
>
> Roger
>
>

-- 
Dr. Otto Schaile            Department f"ur Physik, LMU M"unchen
Phone: +49 89 289 14070     Am Coulombwall 1, D-85748 Garching, Germany
Mobil: +49 160 1553598
FAX:   +49 89 289 14072     EMail: Otto.Schaile_at_Physik.Uni-Muenchen.DE

Received on Wed Jun 07 2006 - 10:12:28 MEST