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Edm const double ROOT:: Sign up using Facebook. Inheritance Inherited Members Includes Libraries. Christoph Christoph 1, 1 1 gold badge 9 9 silver badges 20 20 bronze badges. Active 7 years, 2 months ago. Correlation unsigned int i, unsigned int j const.

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SetVariableValue unsigned intdouble.

Minuit2 manual | ROOT a Data analysis Framework

I don't know why contour should strictly respect the limits you set via m. As far as I can see this is not mentioned in the contour pyminuit documentation.

Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Here's a short description of the contour algorithm used by Minuit and Minuit2 and here is the documentation monuit2 the Minuit2 code in ROOTI did not manage to find the actual C file showing the implementation.

Sign up using Email and Password. This does throw the optimizer out of the forbidden regions, but it does not prevent it to probe them sometimes i. A minimization must have been done before, return false if it is not the case.

In your example the contour starts at 0, 0goes up to 3, 0along the circle to 0, 3and back to 0, 0. Try your example without raising an exception def f x,y: I've already asked this question on the ROOT forumsbut I thought there might also be some stack overflow users who have dealt with this or a similar issue. SetVariableValue unsigned int ivar, double val.

I've tried simply returning a large number like you suggest, but Minuit dies in more complicated scenarios than the simple example I gave; for example, try f x,y,z and only setting limits on x and y.

They are physical limits outside of which my function is undefined. If the variable is fixed or const the return value is zero.

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This is different from the direct interface of Minuit2 or TMinuit where the values were obtained only to variable parameters. Post as a guest Name. Of course miinuit2 is slow, but since you do more of the actual work yourself, you have more control and can make it work in complicated cases.

Strategy const double ROOT:: Maybe you can use some other package like e. SetMaxIterations unsigned int maxiter. NDim which is the total. Simply not raising an exception is not possible. Inheritance Inherited Members Includes Libraries. Stack Overflow works best with JavaScript enabled. Unfortunately, Minuit2 seems intent on drifting the parameters into regions outside of their limits when I try to produce contour plots: Function Members Methods public: Are there any workarounds?

GlobalCC kinuit2 int i const. Correlation unsigned int i, unsigned int j const virtual double CovMatrix unsigned int i, unsigned int j const virtual double ROOT:: Status const int ROOT:: Improving the question-asking experience. Unicorn Meta Zoo 9: Needed for derived classes.

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Minimizer interface for Minuit2 minimization algorithm. Sign up or log in Sign up using Google.

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