sum and preceding-sibling question

[Chris]

I have the following XML structure:

<NODE>
<ITEM>
<IMAGE>
<FILE></FILE>
<WIDTH></WIDTH>
</IMAGE>
</ITEM>
<ITEM>
<IMAGE>
<FILE></FILE>
<WIDTH></WIDTH>
</IMAGE>
</ITEM>
<ITEM> --> current node
<IMAGE>
<FILE></FILE>
<WIDTH></WIDTH>
</IMAGE>
</ITEM>
</NODE>

From the ITEM node level I need to sum up all the image widths up to

that point. I have playing around with preceding-sibling but can't seem
to get the syntax right. I image it is something like this:

<xsl:value-of select="sum(preceding-sibling::ONIMAGE/WIDTH)"/>

Can someone help me? It would be greatly appreciated.

Thanks!

[Soren Kuula]

Hi,

<ITEM> --> current node
<IMAGE>
<FILE></FILE>
<WIDTH></WIDTH>
</IMAGE>
</ITEM>
</NODE>

From the ITEM node level I need to sum up all the image widths up to

that point. I have playing around with preceding-sibling but can't seem
to get the syntax right. I image it is something like this:

<xsl:value-of select="sum(preceding-sibling::ONIMAGE/WIDTH)"/>

Looks fine with me, except that you have IMAGE elements, not ONIMAGE.

Soren

[David Carlisle]

>From the ITEM node level I need to sum up all the image widths up to

that point. I have playing around with preceding-sibling but can't seem
to get the syntax right. I image it is something like this:

<xsl:value-of select="sum(preceding-sibling::ONIMAGE/WIDTH)"/>

Judging by your posted sample the siblings of ITEM are all called ITEM
and there are no elements called ONIMAGE

so I guess that should be

<xsl:value-of select="sum(preceding-sibling::ITEM/IMAGE/WIDTH)"/>

David

[Chris]

Hi,

Thanks again for the replies!

Sorry, I should have written:

<xsl:value-of select="sum(preceding-sibling:*:IMAGE/WIDTH)"/>

but for some reason

<xsl:value-of select="sum(preceding-sibling:*:ITEM/IMAGE/WIDTH)"/>

is still returning 0. Should I include ITEM in that xpath even though
I'm in the ITEM node?

[David Carlisle]

Sorry, I should have written:

<xsl:value-of select="sum(preceding-sibling::IMAGE/WIDTH)"/>

That won't work as the IMAGE elements are not siblings.
<xsl:value-of select="sum(preceding-sibling::ITEM/IMAGE/WIDTH)"/>

is still returning 0. Should I include ITEM in that xpath even though
I'm in the ITEM node?

That will work if
a) your source looked like you said it looked (but with values in the WIDTH), and
b) your current node was teh ITEM node that you thought it was.

usually it's (b) that catches people out, are you sure that you are
where you think you are?

David

[Chris]

I got it. Works prefectly. Thanks so much David!