Customized random number generation using TRandom

ROOT
1

dear rooters,
i use TRandom->Gaus() to get random number from gausian distribution, now i want to generate random number from a distribution which is gaussian+uniform, is there easy way to do this? I mean, like TRandom->Myfunction(Gaus()+uniform()).
my procedure now is
(0)normalize the area of the joint distribution to 1.
(1)using uniform generator to generate a random number (0,1) r
(2)if r<0.4, using uniform generator to generate a random number
else, using gaussian generator to generate a random number
thanks in advance.

2

With ROOT you can get random numbers out of any 1-D, 2-D or 3-D distributions by creating TF1, TF2, TF3 objects respectively and use the TF1::GetRandom function.See many examples in the ROOT tutorials,
eg tutorials/spectrum/peaks.C

Rene

3

thanks