xml - How to choose Element with Greatest Value in XSLT? -
i'm forming html document through xslt stylesheet. in document table contain rainfall data, min temperatures , maximum temperatures , solar radiation each day.
the problem have when attempt retrieve highest minimum temperature , highlight cell crashes browser each time load file. have far: weather.xsl
<?xml version="1.0" encoding="utf-8"?> <!-- document : weather.xsl created on : september 30, 2015, 5:37 pm author : rory description: purpose of transformation follows. --> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/xsl/transform" version="1.0"> <xsl:output method="html"/> <xsl:variable name="year" select="2015"/> <xsl:variable name="x" select="//measurement[@year=$year]"/> <xsl:variable name="monthsofyear" select="$x[@day=1]/month"/> <xsl:variable name="daysofmonth" select="$x[@month=1]/day"/> <xsl:variable name="highestrainfall" select="$x/rainfall[.!=''][not( . < $x/rainfall)]"/> <xsl:variable name="highestmintemp" select="//temperature[@type='minimum' , .!=''][not( . < //temperature[@type='minimum'])]" /> <!-- todo customize transformation rules syntax recommendation http://www.w3.org/tr/xslt --> <xsl:template match="weather"> <html> <head> <title>formatted weather outputs (question 6)</title> <style> .odd{ background: lightgreen; } .even{ background: violet; } .negative{ color: red; } .highest{ background: gold; } </style> </head> <body> <table border="1" style="text-align:center;border-collapse:collapse;"> <tr> <th>date (dd/mm/yyyy)</th> <th>min temp (<sup>o</sup>c)</th> <th>max temp (<sup>o</sup>c)</th> <th>solar radiation (kwh)</th> <th>rainfall (mm)</th> </tr> <!-- display dates 2015 --> <xsl:for-each select="measurement[@year='2015']"> <tr> <xsl:attribute name="class"> <xsl:choose> <xsl:when test="(@month mod 2 != 0)">odd</xsl:when> <xsl:otherwise>even</xsl:otherwise> </xsl:choose> </xsl:attribute> <td> <xsl:value-of select="concat(@day, '/', @month, '/', @year)" /> </td> <td> <xsl:attribute name="class"> <xsl:choose> <xsl:when test="temperature[@type='minimum'] < 0">negative</xsl:when> </xsl:choose> </xsl:attribute> <xsl:variable name="minitemp" select="temperature[@type='minimum']" /> <xsl:if test=" $minitemp = $highestmintemp"> <xsl:attribute name="style">background-color:gold</xsl:attribute> </xsl:if> <xsl:value-of select="temperature[@type='minimum']" /> </td> <td> <xsl:value-of select="temperature[@type='maximum']" /> </td> <td> <xsl:value-of select="solar"/> </td> <td> <xsl:if test=" rainfall = $highestrainfall"> <xsl:attribute name="style">background-color:gold</xsl:attribute> </xsl:if> <xsl:value-of select="rainfall" /> </td> </tr> </xsl:for-each> </table> </body> </html> </xsl:template> </xsl:stylesheet> it's crashing @ section looks follows:
<xsl:variable name="minitemp" select="temperature[@type='minimum']" /> <xsl:if test=" $minitemp = $highestmintemp"> <xsl:attribute name="style">background-color:gold</xsl:attribute> </xsl:if> if offer or advice i'd appreciate it.
in own idiocy using code provided me, didn't adjust variable $x. changing line of:
<xsl:variable name="highestmintemp" select="//temperature[@type='minimum' , .!=''][not( . < //temperature[@type='minimum'])]" /> to read such fixes it:
<xsl:variable name="highestmintemp" select="$x/temperature[@type='minimum' , .!=''][not( . < $x/temperature[@type='minimum'])]" />
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