RooPlot: how do I set a font size of stat box?

Roofit and RooStats
1

Hi,

for my plot I use paramOn() call. It produces the parameters box, but I am not happy with the font size. How can I change it? I did not find any methods like SetFontSize()…

Thanks in advance,
Alexander

2

It Would be SetTextSize() … you are talking about the Stat Box ? do you have a tiny example showing what you speak about ?

3

Hi,

You can change the text attributes as follows

myPdf->paramOn(frame) ;
frame->getAttText()->SetTextSize() ;

If you want to change the size or location of the box, do e.g.

myPdf->paramOn(frame,Layout(xmin,ymin,ymax)) ;

where xmin,ymin and ymax are fractions w.rt.t the plot frame size.

                                                                     Wouter

(You need to do a ‘using namespace RooFIt’ first to be able to use
the Layout() function. For compiled code you additionally need
to include “RooGlobalFunc.h”)

4

Line spaces are automatically reduced?
In my case, they did not change.

5

Can you send a small running example showing what you are talking about ?

6

Dear couet,

Thank you for answer.

I added line 63 to rf106_plotdecoration.C

62 gauss.paramOn(frame,Layout(0.55)) ;
63 frame->getAttText()->SetTextSize(0.01);

However, just text size become small.
I wanted to let line spaces narrow, also.

Best regards,
K. Sakai

7

I meant a small macro we can run to see what you are talking about.
Can you send one ?

8

Thank you for correction to my lazy style question.
I added .C file (it is not my original).
root.cern.ch/root/html/tutorials … ion.C.html

In this .C, frame->getAttText()->SetTextSize(0.01); works correctly.
I want to change line space also.

Best regards,
K. Sakai
rf106_plotdecoration.C (2.83 KB)

9

This is a question specific to RooPlot (RooFit) and Wouter Verkerke (the RooFit author and mantainer) will answer to you.

Lorenzo