I would like to search an XML document for a set of distinct values,
then process the document based on those values.  I have been able to
get this to work by hardcoding a set of string and passing them along.

Hard coded string example:

         <xsl:call-template name="writeTotal">
            <xsl:with-param name="location">Florida</xsl:with-param>
         </xsl:call-template>
         <xsl:call-template name="writeTotal">
            <xsl:with-param name="location">Washington</xsl:with-
param>
         </xsl:call-template>
         <xsl:call-template name="writeTotal">
            <xsl:with-param name="location">Total</xsl:with-param>
         </xsl:call-template>

   <xsl:template name="writeCount">
      <xsl:param name="location"/>
      <xsl:variable name="locationNodes"
select="descendant::PERSON[LOCATION=$location]"/>

      <!-- do something with nodes for this location -->
   </xsl:template>

But I would like to automate this to pull the list directly from the
incoming XML.  When I use the following, I am getting a list of
distinct nodes, but I am unable to make the comparison work:

         <xsl:for-each select="//LOCATION[generate-id()=generate-
id(key('distinct-segcode',.))]">
         <xsl:call-template name="writeCount">
            <xsl:with-param name="location"><xsl:value-of select="."/
></xsl:with-param>
         </xsl:call-template>
         </xsl:for-each>

   <xsl:template name="writeCount">
      <xsl:param name="location"/>
      <xsl:variable name="locationNodes"
select="descendant::PERSON[LOCATION=$location]"/>

      <!-- do something with nodes for this location -->
   </xsl:template>

My location nodes appears to be empty - ie: it's not matching the
incoming value of location to anything.  I've tried various
combinations of normalize-space to no avail.

Any ideas?