Hi, a while ago we addressed the question of plotting many thousand points quickly and dynamically (i.e. one after another). While scipy.xplt does a good job for this in some cases we also wanted to have a nice user-interface (with buttons and such) and our choice came to wxPython. However, none of the present plotting packages fully fitted our specific needs and thus we starting coding our own. The resulting PlottingCanvas for wxPython can be found under http://www.physik.tu-dresden.de/~baecker/python/plot.html The PlottingCanvas might illustrate what speed is possible with wxPython (one question is whether this speed would also be possible in chaco). Any suggestions for further speed improvements and comments are welcome! Nikolai and Arnd