From: Jan Moeller <jmo@buerotiger.de>

Date: Sun, 23 Apr 2006 12:36:22 +0200

Message-ID: <444B58A6.7080507@buerotiger.de>

To: www-math@w3.org

Date: Sun, 23 Apr 2006 12:36:22 +0200

Message-ID: <444B58A6.7080507@buerotiger.de>

To: www-math@w3.org

Hello! A few days ago I asked how to express if-statements with MathML. Thank you all for your replies! What I do know is using content MathML with piecewise/piece elements. That's fine for me... 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. E.g. a formula like x*y^2 is expressed like this: <math> <apply> <plus/> <ci>x</ci> <apply> <power/> <ci>y</ci> <cn>2</cn> </apply> </apply> </math> 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! JanReceived on Sunday, 23 April 2006 10:43:22 UTC

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