Question

我有一个XML文件，其中包含POLYGON对象来定义邻域的坐标：

<Quartier><Nom>Quartier 5-1</Nom>
<Superficie>44709524.0</Superficie>
<Perimetre>27807.3</Perimetre>
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46.9392747395888,-71.1946188754297 46.9399510303156,-71.1950156989765 46.9404153270437,-71.1953970075968 46.9408535466516,-71.1963986964706 46.9420047473603,-71.1990036065962 46.944893430444,-71.2039023644186 46.9500526726309))</Geometrie>
</Quartier>

我试图在XSLT文件中计算多边形对象中有多少个坐标。我在网上看了我怎么能这样做，但是徒劳无功。有谁知道我怎么能这样做？只需一个有用的链接即可。

谢谢你。

Answer 1

如果我理解正确，多边形中顶点的数量等于<Geometrie>文本值+ 1内的逗号数，请尝试：

<xsl:variable name="string" select="/Quartier/Geometrie" />
<xsl:value-of select="string-length(translate($string, translate($string, ',', ''), '')) + 1"/>

在您的示例中返回510。

严格来说，坐标的数量是其两倍 - 但我怀疑你的意思是严格的。

Answer 2

我用过

count(tokenize(/Quartier/Geometrie, ','))

所以例如这里 - http://xslttest.appspot.com/我把

<table xsl:version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"><tr><td><xsl:value-of select="count(tokenize(/Quartier/Geometrie, ','))"/></td></tr></table>

作为XSLT和您的XML作为输入。

计算多边形对象中的地理坐标数

2 个答案: