XMLNode

MATLAB class that allows you to use XPath to navigate and extract data from an XML document.

Description

Using XMLNode, you can read an XML document into MATLAB as an XMLNode object. This object allows you to navigate and extract data from the XML document using XPath queries.

For example, in the XML document of colors (colors.xml)

<colors>
  <color>
    <name>red</name>
    <hex>FF0000</hex>
  </color>
  <color>
    <name>green</name>
    <hex>00FF00</hex>
  </color>
  <color>
    <name>blue</name>
    <hex>0000FF</hex>
  </color>
</colors>

you could obtain the green hex node using

>> n = XMLNode('colors.xml')
>> n.colors.color(2).hex

or

>> n = XMLNode('colors.xml')
>> n('colors/color[2]/hex')

To extract traditional MATLAB arrays instead of returning XMLNode objects, use {} indexing.

>> n = XMLNode('colors.xml')
>> greenHex = n{'colors/color[2]/hex'}

Supports namespaces and various character encodings.

If you have enhancement suggestions or if you find a bug, please leave a comment :)

• Required Products: MATLAB
• MATLAB release: MATLAB 7.13 (R2011b)

[Agostino De Marco]

Great idea. Helpful class.
I also agree with previous comment about the error management. I would like to get an empty object in case of unsuccessful search. Probably a warning (with backtrace on) would be OK in place of error.

[Jarrod Rivituso]

Thanks Jeremy! Those are good ideas :)

[Jeremy Turpin]

Very nice class - very helpful. The namespace support in particular is great to find. I would suggest that you add a wrapper function to the class for adding new namespace aliases, rather than jumping to the java expressions. Also, returning an empty array rather than an exception may be more convenient. Perhaps a separate function call could return an exception, or a setting on the class?
Thank you!