From: Paul Libbrecht <paul@activemath.org>

Date: Sun, 23 Apr 2006 21:13:32 +0200

Message-ID: <444BD1DC.1000802@activemath.org>

To: Jan Moeller <jmo@buerotiger.de>

Cc: www-math@w3.org

Date: Sun, 23 Apr 2006 21:13:32 +0200

Message-ID: <444BD1DC.1000802@activemath.org>

To: Jan Moeller <jmo@buerotiger.de>

Cc: www-math@w3.org

This has been requested several times and I do not think there is a single answer to it. On the one hand... you might find such interpreters around... very possible, even java and open-source. On the other hand, such an interpreter is bound to be incomplete or be a full-fledged computer-algebra system which isn't that common is rather not... light-weight... If you just wish numerical computation, things may be different and, actually, there's a body that just started towards standardizing numerical evaluation (the Numerical Math Consortium [1]) of some parts of OpenMath and MathML. But I do not know of open-source implementations there (Scilab maybe ?). I know there has been some discussions at Jakarta Commons Math [2] towards this and that the consensus there is that implementations of others should rather be used (e.g. Dautelle's Jade [3]). Wishing you find more results! paul [1] Numerical Math Consortium http://www.nmconsortium.org/ [2] Jakarta Commons Math http://jakarta.apache.org/commons/math/ [3] Jade is now JScience http://jscience.org/ Jan Moeller wrote: > Another short questions: > I need to evaluate a MathML expression within Java. That is, I want to > read an input stream with MathML/XML content and get back the function > value the modelled MathML formular would evaluate to. > This stream expresses f(x,y)=x*y^2, but I do not code the f(...) in > MathML. > > I need a method to set the variables x and y (in general all > ci-elements within the content MathML) with values and get the > calculated value back. E.g. if x=2 and y=3, then I need a class that's > able to take an MathML input stream & all variables and returns the > function value (18). > > Does anyone know whether there's an easy way to do this? I searched > the web, but didn't find anything. This one seems to do the other way > (create MathML output): > > http://www.eteks.com/jeks/en/doc/com/eteks/parser/MathMLInterpreter.html > > Thank you! > > Jan > > >Received on Sunday, 23 April 2006 19:13:37 UTC

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