Increase MINUIT'S number of iterations?

ROOT
1

Hi,

I would like to increase the number of iterations for MINUIT. At the moment my fit ends with a “CALL LIMIT” status and I do not have a (obvious) redundancy in my fit parameters. So I would like let MINUIT do some more iterations.

What would be the best way to access MINUIT’s parameters and increase the max. number?

Cheers & Thanks,
Thomas

2

Hi, you can do before fitting

TVirtualFitter::SetMaxIterations( value)

or

ROOT::Math::MinimizerOptions::SetDefaultMaxFunctionCalls(value)

The default value should be 5000.

Best Regards

Lorenzo

3

Many thanks :slight_smile: