Eclipse Wiki Weblog

Thursday January 03, 2008

Eval API inspired by Google Chart API

The simplified Eval API lets you dynamically generate calculation forms. To see the Eval API in action, open up a browser window and copy the following URL into it:

http://matheclipse.org/eval.jsp?ci=x1:X:i:10|y1:Y:i:2&ca=x!:x1!|Fibonacci[x]:Fibonacci[x1]|Binomial[x,y]:Binomial[x1,y1]

Press the Enter or Return key and you should see the following calculator form in your browser:

For the MathEclipse wiki I created this wiki page which contains some more examples:

http://matheclipse.org/en/Eval_API

The more complex Google Web Toolkit interface is available here:

http://matheclipse.org/en/Special:Calc

The following wiki syntax creates the Eval API URLs inside the wiki. The <eval> tag creates a link to an URL which will generate a dynamic calculator input form on the matheclipse.org/eval.jsp page.

<eval ci="x1:X:i:10|y1:Y:i:2" 
      ca="x!:x1!|Fibonacci[x]:Fibonacci[x1]|Binomial[x,y]:Binomial[x1,y1]">
  Combinatoric Numbers
</eval>

there the ci attribute defines the form's input (type: i) and textarea (type: t) fields. Different fields are separated by a pipe (i.e. |) symbol.
and the ca attribute defines the form's action buttons. Different buttons are separated by a pipe (i.e. |) symbol.

Until now I don't tested the generated calculation forms on a mobile device (PDA or mobile phone with AJAX capable browser, iPhone, ...). So my questions are: