Hi Rene,
Rene Brun a écrit :
> >
> > > >
> > > > Problem 2:
> >
> > Although I don't understand the (presumably good) reasons behind these features
> > of the program, may I then suggest to add a new functionality that would allow
> > the TPaveStats... command to be executed WITHOUT the histogram being actually
> > drawn?
>
> Not possible. The TPaveStats makes sense only when associated with a histogram.
Of course, I agree that it makes sense only when associated with a histogram,
but why does it make sense ONLY when the histogram has been ALREADY DRAWN? If I
do:
TPaveStats *st = (TPaveStats*)h->GetListOfFunctions()->FindObject("stats");
st->SetX1NDC(0.6) ; st->SetX2NDC(0.9) ; st->SetY1NDC(0.6) ; st->SetY2NDC(0.9);
BEFORE h->Draw(), then I get the "Error: illegal pointer.." message.
> Painting the 'stats" box is an action within the histogram painting function.
> And I cannot understand the rationale behind your request.
>
See below.
> >
> > This is actually what I want to do, because, as you can imagine, I'm interested
> > in having the histogram displayed only when the position of the stat box has
> > been correctly defined.
>
> Why? The position of the stats box is independent of the histogram coordinates
> and contents. Its position is expressed in NDC. You can use the TStyle
> functions to control the default position and size.
> see TStyle::SetStatH,X,Y,W.
>
I don't understand what you don't understand, but OK let me explain it in
another way:
I want to produce a plot of an histogram with a particular position of the stat
box. It seems to me (please correct me if I'm wrong) that I need to draw the
histogram a first (and, to me, useless) time, just to be able to use the
TPaveStats. Then, once I have defined the position of the stat box, I have to
redraw the histogram a secund time to have it displayed as I wish.
Is it bound to be so?
I also tried to use the TStyle::SetStatH,X,Y,W as you suggest. This answers
partly to my question, but it is not as convenient as TPaveStats in multi-pad
environment, because the values used in SetStatH and SetStatW are scaled to the
size of the canvas, not to the size of the subpad.
--
Best regards,
Bernard Andrieu
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