[ROOT] function of function

From: Tancredi Carli (Tancredi.Carli@cern.ch)
Date: Tue Oct 28 2003 - 14:04:14 MET


 Hello,

 ..a beginers questions. 

  Does somebody has an example of how one can use functions
 on pre-defined functions ? What should one do, if one e.g.
 wants to plot the logarithm of a landau-distribution which
 is predefined in root. 
  lan = new TF1("Landau","log(landau)",binmin,binmax);
 seems to work, but is there a more general way, e.g.
 if one of the function is user-defined ?
 
 I also could not understand the
 syntax how to divide to functions, e.g. two polynominals.

 Thank you for your help.

          Tancredi Carli, 



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