On Tuesday 28 August 2007 11:43, Michael Barton wrote: > AFAICT, the current situation is that NVIZ will not properly read the state > file that it writes. To 'fix' it to read it with the current file format > and code approach will result in an incomplete 'fix' in that it still won't > read parts of the state file properly. > > XML is a potentially good idea, but requires an external library AND I > don't know XML well enough to implement this.
My 2 cents here. If we are using XML in other parts of GRASS (via external parsing libs) I think that it would be good to standardize on some flavor of XML for any misc. things like the NVIZ state file. XML is simple to read in a text editor, simple to parse with external tools, and simple to read/write with the appropriate libs. > > I *think* I can fix it so that NVIZ in GRASS 6.3 can properly read and > configure itself from a state file. BUT, I need to change the state file > format a little bit to make it parseable. Basically, I need to add section > delimiters (e.g., "start surf", "end surf"). This would be fairly simple in XML: <surface> <id>1</id> <name>elevation</name> <source>[EMAIL PROTECTED]></source> <colormap>[EMAIL PROTECTED]</colormap> ... other properties </surface> this type of construct could be used to define all of the pieces in the statefile, so that they can be *directly* read from the document tree: get/set methods work on: surface->id->property->value > Should I go ahead and do this if I can? > > Alternatively, if someone else would like to take this on, I'd be more than > happy. thats the kicker... I do not know enough about XML in a C environment to do this / and a MS thesis is looming over my head right now... Sorry! Thanks for the hard work Michael, Dylan > Michael > > On 8/27/07 12:31 PM, "Glynn Clements" <[EMAIL PROTECTED]> wrote: > > Michael Barton wrote: > >> I don't know enough about xml (either creating or parsing in TclTk) to > >> implement this, although it sounds like a viable idea otherwise. > > > > As NVIZ is a hybrid C+Tcl/Tk application, you can use an external > > library (e.g. libxml) for parsing. > > > > Parsing XML in Tcl isn't viable, IMHO. > > __________________________________________ > Michael Barton, Professor of Anthropology > Director of Graduate Studies > School of Human Evolution & Social Change > Center for Social Dynamics and Complexity > Arizona State University > > phone: 480-965-6213 > fax: 480-965-7671 > www: http://www.public.asu.edu/~cmbarton > > _______________________________________________ > grass-dev mailing list > [email protected] > http://grass.itc.it/mailman/listinfo/grass-dev -- Dylan Beaudette Soils and Biogeochemistry Graduate Group University of California at Davis 530.754.7341 _______________________________________________ grass-dev mailing list [email protected] http://grass.itc.it/mailman/listinfo/grass-dev
