Do not use TFormula but TF1.
See examples in the Root tutorials at:
http://root.cern.ch/root/html/examples/myfit.C.html
http://root.cern.ch/root/html/examples/backsig.C.html
Rene Brun
On Thu, 2 Dec 1999, Feng Shengqin wrote:
> Hello all,
>
> I have a question to ask,if I want to draw a complicated function,for
> example including some integral function of x and y,how to read this
> function using TFormula?
>
> form1 = new TFormula("form1","fun2(x,y)");
>
> the fun2(x,y) is very difficult to define using only one line.
>
> In your ROOT Tutorials,you only define a very simple function,
>
> form1 = new TFormula("form1","abs(sin(x)/x)");
>
> Best regards, Shengqin
>
> ---------------------------------
> Institute of Particle Physics
> Hua-Zhong Normal University,Wuhan,China
> email:fengsq@iopp.ccnu.edu.cn
> ---------------------------------------
>
>
>
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