Re: plot data stream in realtime

[Matt Flax <flatmax flatmax org>]

Mind you - my suggestion below assumes that your original x and y 
pointers you used in the gtk_databox_points_new function are still the 
same as before. Note that the same applies for gtk_databox_lines_new.

Matt

On 11/12/2012 09:57 AM, Matt Flax wrote:
> Can't you just use the function gtk_databox_xyc_graph_set_length to 
> change the length ?
>
> When you call gtk_databox_xyc_graph_set_length it also calls
> g_object_notify (G_OBJECT (xyc_graph), "length");
> which should re-draw.
>
> Matt
>
> On 11/12/2012 06:38 AM, Joaquín Ignacio Aramendía wrote:
> > > Good point.  We don't necessarily have to change the number of 
> > > datapoints but "mute" a certain range at the very beginning of a 
> > > run.  The range is all that seems to be changing. Now the difference 
> > > (and I'm not sure what the goal is) here is gtkdb pre-bounds the 
> > > data ahead of time (to a max runlength) which prevents this from 
> > > running unbound in time.
> > >
> > > Should we modify gtkdatabox to have a fifo mode where data is 
> > > dropped as new data comes in?
> > I was going to this issue when pointing the use of GArray for the 
> > data and add a *_push_point(x,y) method in the graph object. We can 
> > use the GArray functionality for growing arrays of points and take 
> > the lenght and other data at drawing time, not at creation time. 
> > Sounds reasonable? (Maybe add a configurable maximum length or sth)
> >
> > Regards
> > Joaquín
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