MATLAB - XML查找同級元素

Question

我有以下XML結構：

<LMS> 
<StressGradientCorrection> 
     <Gradients> 
      <Gradient> 
       <Curve> 
        <Point> 
         <NormalizedGradient Value="0.01" /> 
         <ReductionFactor Value="1" /> 
        </Point> 
        <Point> 
         <NormalizedGradient Value="0.1" /> 
         <ReductionFactor Value="1" /> 
        </Point> 
        <Point> 
         <NormalizedGradient Value="1" /> 
         <ReductionFactor Value="1" /> 
        </Point> 
        <Point> 
         <NormalizedGradient Value="10" /> 
         <ReductionFactor Value="1" /> 
        </Point> 
       </Curve> 
      </Gradient> 
     </Gradients> 
    </StressGradientCorrection> 
</LMS> 

我需要改變每個<ReductionFactor>的價值的基礎上，<NormalizedGadient>在同一<Point>值。到目前爲止，我只能根據它的屬性區分元素，如名稱或值，但在這裏我不能。如何根據兄弟元素的值區分元素？

這裏是代碼的開始部分：

clear all 
close all 
clc 

% Import the XPath classes 
import javax.xml.xpath.* 

% Construct the DOM. 
doc = xmlread('SGC_EXAMPLE.xml'); 

% Creating an xPath 
factory = javax.xml.xpath.XPathFactory.newInstance(); 
xpath = factory.newXPath(); 

Path = xpath.compile('/LMS/StressGradientCorrection/Gradients/Gradient/Curve/Point/NormalizedGradient[@Value="0.01"]'); 
List = Path.evaluate(doc, XPathConstants.NODESET); 
Sibling = List.item(0); 

% YOUR PROPOSAL HERE 

MyNewlyFoundVariable.setAttribute('Value','5') 

xmlwrite('Final.xml',doc); 

到目前爲止，我只知道如何找到同級基於它的價值。

Answer 1

您可以找到下面的兄弟這樣的：

/LMS/StressGradientCorrection/Gradients/Gradient/Curve/Point/NormalizedGradient[@Value="0.01"]/following-sibling::ReductionFactor/@Value