Hello Chris,
maybe I don't know exactly what you want to do - let me try once more:
You try to plot a line where point need to be added, isn't it?
My first idea was that there should be independent points.
maybe something like the following helps you:
-----------------------------------------------------------------------------------------
from pylab import *
from time import sleep
ion() # interactive mode 'on'
figure()
ax = subplot(111, autoscale_on=True)
x, y = [0], [0]
line = plot(x, y, label="my_data")[0]
# get the line-object as the first element
# of the tuple returned by plot
legend()
for i in arange(10):
x.append(i) # append new values
y.append(i**2)
line.set_data(x,y) # reset data
ax.relim() # reset axes limits
ax.autoscale_view() # rescale axes
draw() # redraw current figure
sleep(0.5) # wait 0.5 seconds
ioff()
show()
--------------------------------------------------------------------------------
I don't know how to make this somehow interactive concerning the data input.
but maybe you save the data to a file and read them every 15 or 20 minutes.
best regards
Matthias
On Tuesday 11 March 2008 19:37, Chris Withers wrote:
> Chris Withers wrote:
> > Matthias Michler wrote:
> >> plot([x1], [y1], "bo", [x2], [y2], "r+")
> >
> > This didn't work :-S
> >
> > - the first time I call show(), execution never comes back to my script
> > so the code never gets to plot any further points
>
> Okay, thanks to Ryan, I now have this point fixed, however, with the
> following code:
>
> ion()
> i = 1
> while i < 5:
> plot([i],[i],'go',[i],[i+2],'ro')
> print i
> i+=1
> sleep(0.5)
> draw()
>
> - there are no lines between the points, how do I get the lines to show?
see above - please
> - how would I pass keyword parameters such as "label" or use other
> methods such as plot_date?
>
> Also, when the above script finishes, I get:
>
> Fatal Python error: PyEval_RestoreThread: NULL tstate
>
> This application has requested the Runtime to terminate it in an unusual
> way.
> Please contact the application's support team for more information.
>
> What does that mean?
Sorry I have no idea why that happens on your system
> cheers,
>
> Chris
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users
