Where can I find an example of a vi which reads a xml file using the Labview schema (LVXMLSchema.xsd)?

Question

Where can I find an example of a vi which reads a xml file using the Labview schema (LVXMLSchema.xsd)?
�Unflatten From XML� is of little use in parsing because it requires the data type. So it seems that the user has to parse each data value, and then �Unflatten From XML� can help a little.
I would like to see NI provide a VI for parsing it�s own schema.

Answer 1

LabVIEW's XML functions are another way of saving data from controls and indicators that is in a more standardized format. If you look at the Unflatten From XML shipping example, it shows taking the data that you would normally send to a Digital Wveform Graph and converting it to XML instead. This data is then unflattend from XML and wired to the graph. Since you know what you wrote to the file, this is an easy thing to do. If what you are looking for is a way to look at any data in any LabVIEW XML file, then you are right, there is not a VI for that. However, I do not believe that that was the intention of the XML functions in the first place.
By wiriting data in XML, this allows other applications outside of LabVIEW to parse and recognize the dat
a. In LabVIEW, you would already know the types and can place a generic item of that type. The issue of knowing the type is that you need to know the type of the wire that comes out of the Unflatten function so that the VI will compile correctly. You could always choose a variant value to unflatten and then do some parsing to take the variant a part. Maybe this will help you out.
See this example for using the Microsoft parser for XML. (http://venus.ni.com/stage/we/niepd_web_display.DISPLAY_EPD4?p_guid=B123AE0CB9FE111EE034080020E74861&p_node=DZ52050&p_submitted=N&p_rank=&p_answer=)
Randy Hoskin
Applications Engineer
National Instruments
http://www.ni.com/ask