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 Author Comment/Response David Revelt 01/31/99 3:53pm Greetings, I am writing a statistics program that needs to integrate a function over and over again. The quickest method to do this within Mathematica is to integrate it once symbolically and then evaluate it at different points. The evaluation is non-trivial however since the solution to the symbolic integral is a poly- nomial with potentially over 100 terms. Since I am using a large data set, I would like to call Mathematica as an external program from Gauss. In short, I would like to call Mathematica once to have it integrate my function symbolically, and then repeatedly call Mathematica from within Gauss whenever I need to evaluate this integral. (The Gauss routine will be doing Newton-Raphson maximization.) The problem is that from my reading of the MathLink documentation, it seems that Mathematica can only be called as a function. That is, I can call it to perform some operation and then it disappears from memory. Is there anyway that I can treat Mathematica like an object where it will symbolically integrate my function upon construction and then evaluate this polynomial whenever I message it? That is, I don't want the Mathematica process to disappear from memory whenever I am done evaluating the symbolic integral because then I will have to re-integrate it the next time I want to evaluate it. Is there a way that Mathematica can sleep, holding in memory the solution to the symbolic integral, and ready to wake up and evaluate the integral when called? (One solution I have already thought of is to have Mathematica print out the symbolic integral to a file in CForm[], and then call the C function whenever I need to evaluate it. This solution is not optimal however for reasons that you don't really want to know about.) Thanks for your help. David URL: ,

 Subject (listing for 'Mathematica as an Object') Author Date Posted Mathematica as an Object David Revelt 01/31/99 3:53pm Re: Mathematica as an Object Forum Modera... 02/06/99 12:36pm
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