just following up on this, in case anyone googles for info as i was doing.
- while the fxsl library works for simple tasks, it fails on more complex
operations when using saxon 8.3 (both fxsl-1.2 and fxsl for xsl 2).
- with xalan, fxsl-1.2 does work (so there seems to be a problem with
saxon), but, it turns out, xalan supports exslt (extended xsl) which gives
you access to math:... functions, which have a nicer syntax than fxsl (at
least, as far as i understood things).
so the simplest solution seems to be to use xalan with the exslt math
extensions.
andrew
andrew cooke said:
brilliant - works perfectly. thanks.
(a possible suggestion: for newbies like me, it would be nice to have a
very very basic example right on the front page of the site, which gives
the "import" element and a simple call to "sin" (for example). now that i
see how to do it, it is so simple it seems obvious, but at first i was
confused how to call a "library" from xsl).
thanks again,
andrew
Dimitre Novatchev said:
On Thu, 17 Mar 2005 22:50:16 -0400 (CLT), andrew cooke
<acooke(_at_)noao(_dot_)edu>
wrote:
Hi,
I can't work out how to do more complex maths (like logarithms, trig
functions, etc) in XSL. Is it possible? If not, is there any other
tool
I can use in an xml pipeline? Is the only option writing SAX or DOM
code
in some non-dedicated programming language?
(I'm generating plots from XML data via XSL to SVG)
FXSL (a function/template library implementing HOF in XSLT and written
in pure XSLT) implements:
Math functions:
http://fxsl.sourceforge.net/articles/xslCalculator/The%20FXSL%20Calculator.html
Random number generators:
http://fxsl.sourceforge.net/articles/Random/Casting%20the%20Dice%20with%20FXSL-htm.htm
Higher-order functions, currying/partial application, etc...:
http://fxsl.sourceforge.net/articles/FuncProg/Functional%20Programming.html
http://fxsl.sourceforge.net/articles/PartialApps/Partial%20Applications.html
http://www.mulberrytech.com/Extreme/Proceedings/xslfo-pdf/2003/Novatchev01/EML2003Novatchev01.pdf
A good example of the math capabilities of FXSL for XSLT 2.0 was
recently provided at:
http://www.xslt.com/html/xsl-list/2005-01/msg00521.html
Cheers,
Dimitre Novatchev
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