Hello, I am trying to write an application that measures data from an external device and then displays the data on a graph, updating the graph when new measurements arrive. Searching the web has led to matplotlib and so I've been having a go at using that for my program. After searching around on the forums, I have had some success in implementing the functionality I am aiming for, but the application gets very very slow the longer it runs.
I have attached the test program I wrote at the bottom of this post. The application uses Tkinter for the GUI. Whenever you type something into the text box at the top, the ascii code of the last character in the text is added to the data list and plotted. The more things you type, the application gets slower and slower. I initially thought that the slow down might be due to the data list getting bigger and bigger, but I no longer think that this is the case. If you comment out line 31 (self.data.append(ord(self.text.get()[-1]))) and replace it with something like self.data = [1, 2, 3], the application still exhibits the same slow down with time. Is there a 'proper' way of doing this? Thanks, --Amr PS remove the comment at the bottom of the file (root.mainloop()) http://www.nabble.com/file/p23573077/pylog.py pylog.py -- View this message in context: http://www.nabble.com/Updating-a-plot-as-data-is-acquired-tp23573077p23573077.html Sent from the matplotlib - users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
