Again: Set axis Titles

From: Matthias Vitt (vitt@imt.fzk.de)
Date: Wed Feb 19 1997 - 09:04:55 MET


Hi,

Setting the axis title via the right mouse button is one thing. But if I
have a TGraph object say "gr", the command

	gr->GetHistogram->SetXTitle("X axis"); 

produces an error message:
	
	illegal pointer to class object GetHistogram()

What is wrong here ? Using only "gr->GetHistogram();" works but has no
effect. 

Is it possible to use an histogram instead of the graph. Can you make
fits using (x,y) pairs within a histogram or is it only possible to fit
one set of values that is spread equally over a discrete number of
channels (like in the tutorial-file multifit.C)? Any suggestions?

Oh, a last one. there is a howto about using Postscript. When I use this
and I try to change the size of the resulting  picture via "Range(8,8);"
the code doesn't produce a picture that is 8 cm by 8 cm but a picture
that has stil the default size.

 Any help is appreciated

bye,
	Mats

P.S: Congratulations for "root", I really like it. Finally one can
create plots whithout spending hours with a "point an click" interface.



This archive was generated by hypermail 2b29 : Tue Jan 04 2000 - 00:26:18 MET