我有一个表（使用下面提供的XSL文档创建）。我需要获得每个月温度（最小值和最大值）和降雨量的平均数据。
我已经开始了这个但是我把模板搞得一团糟，想知道是否有人可以看看？我得到了一堆重复的标题，我认为不应该存在，而且我没有运气将数据拉到一起。
XSL文件：
<?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( . < $x/rainfall)]"/>
<xsl:variable name="highestMinTemp" select="$x/temperature[@type='minimum' and .!=''][not( . < $x/temperature[@type='minimum'])]" />
<xsl:variable name="lowestMinTemp" select="$x/temperature[@type='minimum' and .!=''][not( $x/temperature[@type='minimum'] < . )]" />
<xsl:variable name="highestMaxTemp" select="$x/temperature[@type='maximum' and .!=''][not( . < $x/temperature[@type='maximum'])]" />
<xsl:variable name="lowestMaxTemp" select="$x/temperature[@type='maximum' and .!=''][not( $x/temperature[@type='maximum'] < . )]" />
<xsl:variable name="highestSolar" select="$x/solar[.!=''][not( . < $x/solar)]"/>
<!-- TODO customize transformation rules
syntax recommendation http://www.w3.org/TR/xslt
-->
<xsl:template match="/">
<html>
<head>
<title>Formatted Weather Outputs (Question 6)</title>
<style>
.odd{
background: lightgreen;
}
.even{
background: violet;
}
.negative{
color: red;
}
</style>
</head>
<body>
<table border="1" style="text-align:center;border-collapse:collapse;">
<xsl:apply-templates select="weather" />
</table>
<table border="1" style="text-align:center;border-collapse:collapse;">
<xsl:apply-templates select="weather/measurement[@year='2015']" />
</table>
</body>
</html>
</xsl:template>
<xsl:template match="weather">
<caption>Daily Observations</caption>
<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/m<sup>2</sup>)</th>
<th>Rainfall (mm)</th>
</tr>
<!-- Only display dates for 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:if test=" temperature[@type='minimum'] = $highestMinTemp">
<xsl:attribute name="style">background-color:gold</xsl:attribute>
</xsl:if>
<xsl:if test=" temperature[@type='minimum'] = $lowestMinTemp">
<xsl:attribute name="style">background-color:lightblue</xsl:attribute>
</xsl:if>
<xsl:value-of select="temperature[@type='minimum']" />
</td>
<td>
<xsl:if test=" temperature[@type='maximum'] = $highestMaxTemp">
<xsl:attribute name="style">background-color:gold</xsl:attribute>
</xsl:if>
<xsl:if test=" temperature[@type='maximum'] = $lowestMaxTemp">
<xsl:attribute name="style">background-color:lightblue</xsl:attribute>
</xsl:if>
<xsl:value-of select="temperature[@type='maximum']" />
</td>
<td>
<xsl:if test=" solar = $highestSolar">
<xsl:attribute name="style">background-color:gold</xsl:attribute>
</xsl:if>
<xsl:value-of select="solar"/>
</td>
<td>
<xsl:if test=" rainfall = $highestRainfall">
<xsl:attribute name="style">background-color:gold</xsl:attribute>
</xsl:if>
<xsl:value-of select="rainfall" />
</td>
</tr>
</xsl:for-each>
</xsl:template>
<xsl:template match="weather/measurement">
<xsl:variable name="totalMinTemp" select="sum(temperature[@type='minimum'])" />
<xsl:variable name="numberOfDays" select="count(temperature[@type='minimum'])" />
<xsl:variable name="averageMinTemp" select="($totalMinTemp div $numberOfDays)" />
<xsl:variable name="month" select="@month" />
<caption>Monthly Averages</caption>
<tr><td colspan="4">Average</td></tr>
<tr>
<td>Month</td><td>Min Temp<sup>o</sup>C</td><td>Max Temp<sup>o</sup>C</td><td>Solar radiation kwh/m<sup>2</sup></td>
</tr>
<tr>
<td><!--<xsl:value-of select="$month" />-->T</td>
</tr>
</xsl:template>
</xsl:stylesheet>
输入文件样本：
<weather>
<measurement year="2015" month="09" day="19">
<rainfall>0.0</rainfall>
<temperature type="minimum">5.2</temperature>
<temperature type="maximum">19.9</temperature>
<solar>5.0</solar>
</measurement>
<measurement year="2015" month="09" day="20">
<rainfall>0.0</rainfall>
<temperature type="minimum">5.3</temperature>
<temperature type="maximum">22.7</temperature>
<solar>5.3</solar>
</measurement>
<measurement year="2015" month="09" day="21">
<rainfall>0.0</rainfall>
<temperature type="minimum">6.9</temperature>
<temperature type="maximum">17.6</temperature>
<solar>3.8</solar>
</measurement>
</weather>
答案 0 :(得分：0)
执行此操作时：
<xsl:template match="weather/measurement">
<xsl:variable name="totalMinTemp" select="sum(temperature[@type='minimum'])" />
您正在处理一个测量，并且它只有一个@ type = minimum的温度，因此单个集合的总和通常是该值。我怀疑你想要总结一个月或一年的所有测量结果，当你处理个人测量时你不能这样做。
如果您可以使用XSLT 2.0，那么您将要编写类似
的内容<xsl:template match="weather">
...
<xsl:for-each-group select="measurement[@year='2015']" group-by="@month">
<xsl:variable name="totalMinTemp" select="sum(current-group()/temperature[@type='minimum'])" />
<xsl:variable name="numberOfDays" select="count(current-group()/temperature[@type='minimum'])" />
....
正如我之前提到的，在XSLT 1.0中进行分组比较棘手：您需要阅读＆＃34; Muenchian分组＆＃34;大多数优秀的XSLT教科书都涵盖了这一点，并且还有大量的在线资源。