How to find and replace a text in xml file

In an xml file I want to change the name "Information" into "Data", in other word I need to find "Information" in an original xml and replace it by "Data". Could you help me.

original xml

*************

<Information>

<Model_name>1M1R.xml</Model_name>

<Type>1</Type>

</Information>

*************

Wanted xml

<Data>

<Model_name>1M1R.xml</Model_name>

<Type>1</Type>

</Data>

Answer 1

[Deepak]

Hi @Husam Kaid,

To modify an XML file in MATLAB, first use "xmlread" to load the XML file into a Document Object Model (DOM) object. Then, access the root element using "getDocumentElement()". If the tag name of root element is "Information", create a new element named "Data" and transfer all child nodes from the old element to the new one. Finally, use "xmlwrite" to save the modified XML document to a new file.

Here is the sample MATLAB code to achieve the same:

% Read the original XML file
xmlFileName = 'filename.xml';
xmlDoc = xmlread(xmlFileName);

% Get the root element
rootElement = xmlDoc.getDocumentElement();

% Check if the root element is "Information" and change it to "Data"
if strcmp(rootElement.getTagName(), 'Information')
    % Create a new element with the name "Data"
    newElement = xmlDoc.createElement('Data');
    
    % Move all child nodes from the old element to the new element
    while rootElement.hasChildNodes()
        newElement.appendChild(rootElement.getFirstChild());
    end
    
    % Replace the old root element with the new one
    xmlDoc.replaceChild(newElement, rootElement);
end

% Write the modified XML back to a file
xmlwrite('modifiedfile.xml', xmlDoc);

Please find attached documentation of functions used for reference:

xmlread(): www.mathworks.com/help/matlab/ref/xmlread.html

xmlwrite(): www.mathworks.com/help/matlab/ref/xmlwrite.html

I hope this assists in resolving the issue.