Re: command in TMinuit to only calculate the covariance matrix

You have to use

TMinuit::mnemat(Double_t *emat, Int_t ndim)

where emat is a pointer to an array previously declared with size ndim*ndim, where ndim are the number of free parameters.

   Best Regards

  Lorenzo

On 3 Sep 2007, at 19:42, LU Xianguo wrote:

> Hi rooters,
>
> Does somebody know that :
>
> what is the command telling TMinuit to
> calculate the covariance matrix with the
> current parameter values and NOT do minimization ?
>
> Thanks very much !
>
> Best Regards,
> Xianguo
>
> --
> Take flight into the sky, beyond the moon, beyond my mind.
>
> LU, Xianguo
>
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Received on Tue Sep 04 2007 - 03:20:03 CEST