Re: [xsl] XPath or xsl to count a number of distinct values of an attribute?

[Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>]

Hi,

On 2/28/2012 6:40 AM, Andrew Welch wrote:
> On 28 February 2012 11:39, Lech Rzedzicki<xchaotic@xxxxxxxxx>  wrote:
> > Hi.
> > Hopefully a very quick question:
> > I have an attribute such as @class, which may have a value "h1", "H2" etc.
> > I want to calculate how many distinct values are there so that "H2"
> > and "h2" are counted as two occurrences, but following occurrences of
> > either do not increment a counter.
> > Basically a quality metric for a consistency of a document.
> >
> > Is it possible with Xpath alone? (sth like count(distinct-values(//@class)) ?)
>
> yep

If the attribute is @class, and the intent is to run this on data in the 
wild, keep in mind also that any html:*/@class may also have several 
(space-delimited) values.

So count(distinct-values(//@class/tokenize(.,'\s+')))

Cheers,
Wendell

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Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
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