Hi,
On 2/28/2012 6:40 AM, Andrew Welch wrote:
On 28 February 2012 11:39, Lech Rzedzicki<xchaotic(_at_)gmail(_dot_)com> 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
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