MyHist_2D ->Draw() :: Intersting

Thank you Stephan & Marc for your reply.

I am pretty sure that there is no sub directory problem. I just found an interesting thing which might explain my problem.   Let say i have two parameters time "dt"(which is always positive) & distance from either side of a vertex"dx"(could be positive or negative)to fill a 2D histogram. In first case i take absolute value of "dx" and in second case i don't,

    Case1:

           myhist_2D_abs->Fill(dt,fabs(dx));

    Case2 :

           myhist_2D->Fill(dt,dx);

So, "Draw()" command works for second case but does not work for first case(for absolute value) and gives an error message that i already mentioned.

Cheers, Asif

Quoting asaddiqu_at_ualberta.ca:

>
> Hi,
>
> I can view my 2D histogram by "TBrowser" but whenever i try to see
> it by "Draw()".
> It shows an error message which is following.
>
> ============================================
> root[1] myhist_2D->Draw()
> Error: Symbol myhist_2D is not defined in current scope
> FILE:(tmpfile) LINE:1
> Error: Failed to evaluate myhist_2D->Draw()Possible candidates are...
> filename line:size busy function type and name
> =============================================
>
> Unfortunately, i am using an older version of root{4.00/08 December
> 2004 } but there should be no problem of version with this basic
> thing.
>
> Cheers, Asif
>
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Received on Mon Aug 09 2010 - 19:57:03 CEST