Re: Goffice Graph Bounds Change

[Jean Bréfort <jean brefort normalesup org>]

If the data change, everything should be updated. It's strange that it
might not be the case when only y data change. I need to investigate.

Le jeudi 10 septembre 2009 à 10:27 -0400, David Brigada a écrit :
> I found something interesting.  When I change the code to change the 
> number of data points between 500 and 501 randomly, it seems that the 
> graph will rescale properly.  Maybe something doesn't trigger the bounds 
> change unless one of the two things happens:
>
> - The number of data points changes
> - The x values / limits of x values change (my program only uses a 
> single set of data for x values)
>
> Any ideas on what might be causing this?
>
> Thanks,
> Dave
>
> Jean Bréfort wrote:
> > I'd say that this should work. You might try to use
> > gog_object_request_update for the series. There is some similar code in
> > gchemutils (gchemutils.nongnu.org) file libs/gcu/spectrumdoc.cc.
> >
> > Le vendredi 04 septembre 2009 à 13:06 -0400, David Brigada a écrit :
> > > Jean,
> > >
> > > The relevant part on new data looks something like this (simplified a bit):
> > >
> > > void new_data(GogSeries *series, gdouble *x, gdouble *y)
> > > {
> > >    GOData *dat;
> > >    GError *error;
> > >
> > >    dat = go_data_vector_val_new(x, 501, NULL);
> > >    gog_series_set_dim(series, 0, dat, &error);
> > >    dat = go_data_vector_val_new(y, 501, NULL);
> > >    gog_series_set_dim(series, 1, dat, &error);
> > > }
> > >
> > > Thanks,
> > > Dave       
> > >
> > > Jean Brefort wrote:
> > > > What's your code? Do you call gog_series_set_dim when you change the
> > > > data? or anything else?
> > > >
> > > > Regards,
> > > > Jean
> > > >
> > > > Le vendredi 04 septembre 2009 à 12:47 -0400, David Brigada a écrit :
> > > > > Hello,
> > > > >
> > > > > I'm using the goffice library to plot some graphs in a custom 
> > > > > application.  The first time I plot data on a graph, the bounds of the 
> > > > > graph automatically adjust to fit the data.  However, subsequent times, 
> > > > > when I update the series with new data, sometimes it doesn't redo the 
> > > > > bounds of the graph, so data is lost off the sides (especially the top 
> > > > > and bottom).  Am I missing some way to tell it to update the bounds when 
> > > > > it gets new data?  The same behavior appears in goffice 0.7.8 and 0.7.11.
> > > > >
> > > > > Screenshot: http://www.rpi.edu/~brigad/truncated.png
> > > > >
> > > > > Thanks,
> > > > > David Brigada
> > > > > _______________________________________________
> > > > > gnumeric-list mailing list
> > > > > gnumeric-list gnome org
> > > > > http://mail.gnome.org/mailman/listinfo/gnumeric-list
>
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