Re: Goffice Graph Bounds Change
- From: David Brigada <brigad rpi edu>
- To: Jean Bréfort <jean brefort normalesup org>
- Cc: gnumeric-list gnome org
- Subject: Re: Goffice Graph Bounds Change
- Date: Thu, 10 Sep 2009 10:27:05 -0400
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
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