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Re: [xsl] XSL output problem

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Hi Arief,

> <xsl:template name="create_points">
>   <xsl:param name="DIV"/>
>   <xsl:param name="MinY"/>
>   <xsl:param name="ScaleY"/>
>   <xsl:param name="intervalY"/>
>
>   <xsl:variable name="pointlist">
>    <xsl:for-each select="$DIV/*" xml:space="preserve">
>     <xsl:number value="./cgr" grouping-size="3"/>,<xsl:number =
> value="((@Depth - $MinY) div $ScaleY) * $intervalY"
> grouping-size="3"/><xsl:value-of select="'&#x20;'"/>
>    </xsl:for-each>
>   </xsl:variable>
>   <xsl:value-of select="$pointlist"/>
> </xsl:template>
>
> The problem is, ... I got the polyine tag with its attributes, but
> sometimes ... the points value attribute is cut in the middle and the
> rest of value is in the new line, for example :
> <polyline points=3D"34.67,23.45 56.88,2
> .45 88.99 />

There are a couple of things that are a little strange here. The first
is the fact that you're using xsl:number to format numbers, but seem
to be trying to format *decimal* numbers through this method. The
xsl:number instruction is designed for handling integers; processors
should round whatever number you give them to an integer before
formatting it.

I think that just writing out the numbers as they are should give you
the correct formatting, so doing:

  <xsl:value-of select="number(cgr)" />
  <xsl:text>,</xsl:text>
  <xsl:value-of select="((@Depth - $MinY) div $ScaleY) * $intervalY" />
  <xsl:text> </xsl:text>

You could use format-number() if you wanted a certain minimum number
of digits before or a certain maximum number of digits after the
decimal point, or if you want to group the digits (though I doubt that
you want to group the digits, since ',' is taken as a separator
between coordinates (or pairs of coordinates) in SVG.

The other thing that might be causing you problems is the presence of
the xml:space="preserve" on the xsl:for-each. Preserving whitespace
within an XSLT element means that any whitespace in the stylesheet
*is* included in the result document. So if you have line breaks
or tabs to make your code readable, those line breaks and tabs get
carried over to the result that you get.

This *could* be what's causing the line breaks in your result, so I'd
try getting rid of it and see what happens. Just use:

  <xsl:for-each select="$DIV/*">
    <xsl:value-of select="number(cgr)" />
    <xsl:text>,</xsl:text>
    <xsl:value-of select="((@Depth - $MinY) div $ScaleY) * $intervalY" />
    <xsl:text> </xsl:text>
  </xsl:for-each>

However, this doesn't explain why you'd get a line break in the
*middle* of a number, which is what you illustrated as your result.
Are you sure that the line break is actually present in the document,
and doesn't just occur because you're viewing the document in an
editor that wraps long lines? If you really do get line breaks
occurring in the middle of your attribute values, especially if
they're included in places where there's no whitespace in the value
that you generate, then it's a big bug in the serialization carried
out by your XSLT processor, and you should report it.

Cheers,

Jeni

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Jeni Tennison
http://www.jenitennison.com/


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