Re: Rad XML in octave

[Tatsuro MATSUOKA]

----- Original Message -----

> From: ngdias 
> To: help-octave
> Cc: 
> Date: 2017/3/22, Wed 09:42
> Subject: Re: Rad XML in octave
> 
>T hanks so much for all the replies. You have been very helpful, the post by
> tmacchant was particularly detailed.
> 
> I use Windows and Linux, but I'm running Octave in Windows at the moment.
> The system doesn't allow for the creation of a .octaverc using Explorer (a
> file needs a filename :P), but I found a workaround by going into the comand
> line and typing
> 
> ren octaverc .octaverc
> 
> I think this info about the pkg load io; command is super important and
> should be mentioned in
> https://octave.sourceforge.io/io/function/xmlread.html
> and 
> http://wiki.octave.org/Cookbook#Load_XML_files
> 
> I don't understand how the javaaddpath commands are indicated, but not the
> need to load this package.
> 
> Also, could I load Xerces-J-bin.2.11.0.zip as a package instead of 
> javaaddpath ("/path/to/xerces-2_11_0/xercesImpl.jar"); 
> javaaddpath ("/path/to/xerces-2_11_0/xml-apis.jar"); 
> 
> ie pkg install -forge Xerces-J-bin.2.11.0 ?


> ie pkg install -forge Xerces-J-bin.2.11.0 ?


It is not.

According to https://octave.sourceforge.io/io/function/xmlread.htm,
Octave does not ship with a Xerces library.


You seems to have to set by yourself.

Extract 
Xerces-J-bin.2.11.0.zip


to the path appropriate for you. 
If you extracted to C:\octave, javaaddpath is to be

javaaddpath ("C:/octave/xerces-2_11_0/xercesImpl.jar"); 

javaaddpath ("C:/octave/xerces-2_11_0/xml-apis.jar"); 


I execute

javaaddpath ("C:/octave/xerces-2_11_0/xercesImpl.jar"); 

javaaddpath ("C:/octave/xerces-2_11_0/xml-apis.jar"); 

pkg load io

And execute Demonstration 1 in  
https://octave.sourceforge.io/io/function/xmlread.htm,

But I change graphics_toolkit fltk to qt because fltk causes error.
## Create an svg file, which is nothing but an xml tree tk = graphics_toolkit 
(); graphics_toolkit ("qt"); % change from fltk to qt hf = figure (); sombrero 
(); fname = [tempname(), ".svg"]; print (fname); close (hf) graphics_toolkit 
(tk); ## Read the svg file and check the root node is named "svg" dom = xmlread 
(fname); if (dom.hasChildNodes ()) root_node = dom.getChildNodes ().item (0); 
printf ("The name of the root node is \"%s\"\n", ... char 
(root_node.getNodeName ())) endif
I could see
The name of the root node is "svg"


as shown in Demonstration 1 on the we page.

Tatsuro