How to count images and display the result?

[Cicorione]

Hi SP friends,

I have multiple pictures that now are overlaid so I want to count their total amount:

<!-- IMAGE BLOCK BASE -->
<ForAll select="img">
    <PlaceObject column="1" row="1" align="left">
        <Table width="8" stretch="max" fontfamily="subtitle" padding="3mm" >
            <Tr align="center" valign="middle">
                <Td>
                    <Overlay>
                        <Image file="{@file}" maxheight="10" maxwidth="7"
                        rotate="{if ( sd:aspectratio(@file) &lt; 1 ) then '-90' else '0'}"/>/>
                    </Overlay>
                </Td>
            </Tr>
        </Table>
    </PlaceObject>
</ForAll>

Just right below a paragraph, it should print the output:

<PlaceObject>
    <Textblock width="8" fontfamily="subtitle" textformat="nohyphen">
        <Paragraph textformat="centered">
            <Value>Total numbers of picutures: </Value><Value select="count('Image')" />
        </Paragraph>
    </Textblock>
</PlaceObject>

This is not working and I have not idea on how to use count( )... 🤷

Thanks! 🙏

[pgundlach]

I assume your question is similar to this setup:

<data>
    <img name="one" />
    <img name="two" />
    <img name="three" />
</data>

and the layout file:

<Layout xmlns="urn:speedata.de:2009/publisher/en"
    xmlns:sd="urn:speedata:2009/publisher/functions/en">

    <Record element="data">
        <ForAll select="img">
            <PlaceObject>
                <Textblock>
                    <Paragraph>
                        <Value select="@name" />
                    </Paragraph>
                </Textblock>
            </PlaceObject>
        </ForAll>
    </Record>
</Layout>

You have two posibilities:

<Record element="data">
    <ForAll select="img">
        <PlaceObject>
            <Textblock>
                <Paragraph>
                    <Value select="@name" />
                </Paragraph>
            </Textblock>
        </PlaceObject>
    </ForAll>

    <PlaceObject>
        <Textblock>
            <Paragraph>
                <Value select="count(img)"></Value>
            </Paragraph>
        </Textblock>
    </PlaceObject>
</Record>

or

<Record element="data">
    <SetVariable variable="c" select="0" />
    <ForAll select="img">
        <SetVariable variable="c" select="$c + 1" />
        <PlaceObject>
            <Textblock>
                <Paragraph>
                    <Value select="@name" />
                </Paragraph>
            </Textblock>
        </PlaceObject>
    </ForAll>
    <PlaceObject>
        <Textblock>
            <Paragraph>
                <Value select="$c"></Value>
            </Paragraph>
        </Textblock>
    </PlaceObject>
</Record>

I hope that these examples are self explanatory. If not, or if I have misunderstood anything, please post a follow-up.

[Cicorione]

Thank you @pgundlach

The pebcak was that I used <Value select="count(img)" /> instead of <Value select="count(img)"></Value> .
But why did the single tag < tag /> prevent the XPath function to be printed? 🤯

[pgundlach]

Can you make an example showing that a single tag <tag /> prevents the xpath function to be printed? I'd say this is not possible... Perhaps you did something else? Like using quotes in 'img'?

[Cicorione]

Sorry @pgundlach I don't know what happened, I am pretty sure I used several combinations before to ask here, such as:

<Value select="count(img)" /> <!-- this was actually the first attempt -->
<Value select="count('img')" />
<Value select="count(Image)" />
<Value select="count({@img})" />
<Value select="count({@file})" />

And none of those worked out, but now worked with the single or the the double <tag>... 🤯