thanks everyone.  The solution I settled on was:

<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
	<xsl:template match="/">
		<myoutput>
			<xsl:apply-templates/>
		</myoutput>
	</xsl:template>
	<xsl:template match="mytag">
		<xsl:element name="myelement">
			<xsl:attribute name="time">
				<xsl:choose>
					<xsl:when test="@duration=''">1</xsl:when>
					<xsl:when test="not(@duration)">1</xsl:when>
					<xsl:otherwise><xsl:value-of
select="@duration"/></xsl:otherwise>
				</xsl:choose>
			</xsl:attribute>
		</xsl:element>
	</xsl:template>
</xsl:stylesheet>

which given the input data:

<?xml version="1.0" encoding="iso-8859-1"?>
<info>
	<mytag duration="3 days" />
	<mytag />
	<mytag duration="6 hours" />
	<mytag duration="33 hours" />
	<mytag duration="" />
	<mytag duration="13 hours" />
	<mytag duration="5 days" />
	<mytag duration="" />
	<mytag duration="3 hours" />
	<mytag duration="23 hours" />
</info>


produces:


<?xml version="1.0" encoding="UTF-8"?><myoutput>
	<myelement time="3 days"/>
	<myelement time="1"/>
	<myelement time="6 hours"/>
	<myelement time="33 hours"/>
	<myelement time="1"/>
	<myelement time="13 hours"/>
	<myelement time="5 days"/>
	<myelement time="1"/>
	<myelement time="3 hours"/>
	<myelement time="23 hours"/>
</myoutput>

thanks again! 8-)

David.


--- Wendell Piez <wapiez@xxxxxxxxxxxxxxxx> wrote:
> At 11:49 AM 4/15/2004, 'twas written:
> ><xsl:template match="/info">
> ><results>
> >   <xsl:for-each select='mytag'>
> >     <xsl:element name='myelement'>
> >       <xsl:choose>
> >         <xsl:when test='@duration != ""'>
> >           <xsl:copy-of select='@duration'/>
> >         </xsl:when>
> >         <xsl:otherwise>
> >           <xsl:attribute
> name='duration'>1</xsl:attribute>
> >         </xsl:otherwise>
> >       </xsl:choose>
> >     </xsl:element>
> >   </xsl:for-each>
> ></results>
> ></xsl:template>
> 
> Or:
> 
> <xsl:template match="/info">
>    <results>
>      <xsl:for-each select='mytag'>
>        <myelement duration='1'>
>          <xsl:copy-of
> select='@duration[normalize-space()]'/>
>        </myelement>
>      </xsl:for-each>
>    </results>
> </xsl:template>
> 
> Take your pick: clarity vs. succinctness.
> 
> Cheers,
> Wendell
> 
> 
> 
>
======================================================================
> Wendell Piez                           
> mailto:wapiez@xxxxxxxxxxxxxxxx
> Mulberry Technologies, Inc.               
> http://www.mulberrytech.com
> 17 West Jefferson Street                    Direct
> Phone: 301/315-9635
> Suite 207                                         
> Phone: 301/315-9631
> Rockville, MD  20850                                
> Fax: 301/315-8285
>
----------------------------------------------------------------------
>    Mulberry Technologies: A Consultancy Specializing
> in SGML and XML
>
======================================================================
> 



	
		
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