MATLAB: Doesn’t the XMLREAD function work properly in MATLAB 6.5 (R13)

docnodegetdocumenttypeMATLABxmlread

Why doesn't the XMLREAD function work properly in MATLAB 6.5 (R13)?

I get an error message when I call the GetNodeType method on a document node created with XMLREAD.

For example:

docNode = xmlread( 'myxmlfile.xml')
docNode =
[#document: null]
docNodeType = docNode.GetNodeType

 ??? No appropriate method or public field GetNodeType for class
 org.apache.xerces.dom.DeferredDocumentImpl.

I cannot find documentation for "DeferredDocumentImpl". Does XMLREAD work yet?

Best Answer

The error:

 ??? No appropriate method or public field GetNodeType for class
 org.apache.xerces.dom.DeferredDocumentImpl.

is caused by the fact that method names are case-sensitive and MATLAB did not recognize the "GetNodeType" method. The correct method is "getNodeType".

MATLAB supports tab-completion, and this will help reduce typing errors at the command prompt. For example, typing:

docNode.get

Then, press the tab key to bring up a list of possible completions for the keyword.

Related Solutions

MATLAB: What is the wrong with the following code

xmlread does not read urls, only files. To read urls you can use webread. I believe the following should work if http://maps.google.com/maps/geo were a valid URL at (unfortunately, it 404):

address='1217 fayettevelle St., Durham, NC';
SERVER_URL = 'http://maps.google.com';
address = regexprep(address, ' ', '+');
fullurl = sprintf('%s/maps/geo', SERVER_URL);
domnode = webread(fullurl, 'output', 'xml', 'q', address, weboptions('ContentType', 'xmldom'))

MATLAB: XML Help – How to Change encoding? How to set DOCTYPE? Why cant I find any documentatio

I think there's no way to customize encoding in xmlwrite and writestruct (from R2020b).

Workaround would be using .NET or Java libraries.

If you're using Windows machine, you can use .NET addAssembly and you can utilize System.XML libraries in MATLAB.

asm = NET.addAssembly('System.XML');
import System.XML.*
% Create XML object
doc = System.Xml.XmlDocument;
% Specify encoding ISO-8859-1
xmldecl = doc.CreateXmlDeclaration('1.0', 'ISO-8859-1', []);
doc.AppendChild(xmldecl);
% Specify DocumentType
doc.XmlResolver= []; % To avoid dtd search errors.
doctype = doc.CreateDocumentType("CAMERA", [], "camera_cal.dtd", []);
doc.AppendChild(doctype);
% Create an element. This is just a sample.
newElem = doc.CreateElement("items");
newNode = doc.CreateNode("element", "item", []);
attr = doc.CreateAttribute("name");
attr.Value = "name1";
newNode.SetAttributeNode(attr);
newNode.InnerText = "text here";
newElem.AppendChild(newNode);
doc.AppendChild(newElem);
% Save the XML object to xml file
settings =  System.Xml.XmlWriterSettings();
settings.Indent = true;
writer = System.Xml.XmlWriter.Create("out.xml", settings);
doc.WriteTo(writer);
writer.Close;

Then, you can get the following xml file.

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE CAMERA SYSTEM "camera_cal.dtd">
<items>
  <item name="name1">text here</item>
</items>

Best Answer

Related Solutions

MATLAB: What is the wrong with the following code

MATLAB: XML Help – How to Change encoding? How to set DOCTYPE? Why cant I find any documentatio

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