I'm using the mrqmin function to obtain the coefficients of a given set of data function. Several of the parameters are exponents and cause overflows during fitting if they become too big.
All of the parameters have physical contraints, i.e., >=0, <=200, etc.

How can I bound the value of the parameters to stop increasing/decreasing causing overflow errors during fitting?

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Thanks!!!

Eugenie*:confused:

you should re-formulate the equation you are trying to optimize. Try converting it using log(*) this should compress the values being fit within a reasonable range.

Originally posted by Eugenie
I'm using the mrqmin function to obtain the coefficients of a given set of data function. Several of the parameters are exponents and cause overflows during fitting if they become too big.
All of the parameters have physical contraints, i.e., >=0, <=200, etc.

How can I bound the value of the parameters to stop increasing/decreasing causing overflow errors during fitting?

????????????????????????????????????

Thanks!!!

Eugenie*:confused:

How do you constrain the parameter values? I am trying to do that but don't know what routine to use. Thanks in advance.