RE: sum() of nodeset

> I have xml file like this:
> ----------xml-------------
> <xml>
> <row m=1 y=1999 v=3 />
> <row m=1 y=2000 v=43 />
> <row m=2 y=1999 v=6 />
> <row m=2 y=2000 v=56 />
> ...
> </xml>
> Now, I am trying to get sum of values for a particular m 

with <xml> as the context node,
<xsl:value-of select="sum(row[@m='1']/@v)"/>

Mike Kay
> 


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