How to get the numeric value from text after parsing an xml file?

I use xml2struct to read the xml file into a structure. However, the format of all info are text. For example, attributes z='18' was read in as a text with 1 and 8.

How can I get the numeric 18 and use it for calculation?

Thanks...

Answer 1

[Ken Atwell]

I've run into this kind of thing. After calling xml2struct, "walk" the structure and use str2num on anything you want as a numeric instead of text.

[J. Hu]

Ken: thanks for your answer. I tried use str2num, i got error message:

??? Error using ==> str2num at 33

Requires string or character array input.

Error in ==> m_Plot at 33

str2num(xxx)

I checked xxx and it shows as:

xxx =

Text: '149.75'

[Ken Atwell]

xxx must be an object or struct, try str2num(xxx.Text)

[J. Hu]

Thanks for your reply. However, there is still error:

??? Reference to non-existent field 'text'.

Error in ==> m_Plot at 36

str2num(xxx.text)

Do you have any solution?

Basically, what I want to do is to get the data from an xml file c.xml like below

<a a1='2'>

<a3>3</a3>

</a>

I use "xml2struct" in file exchange to parse the above xml file d=xml2struct('c.xml') and then use str2num(d.a.Attributes.a1) to get the attribute a1's value 2. However, I came across the problems I asked here when I use str2num(d.a.a3).

Besides using "xml2struct", is there any other efficient solution to get the values of attributes and others?

Thanks much.

[Ken Atwell]

Try upper-case "T" in "Text" -- the first message suggests it is upper case and MATLAB is case sensitive.

[J. Hu]

It works. Thanks...