python - Multi lines realtime plotting -

i plot multi-lines in python in real-time manner though i'm new language.

i have found codes example work fine can 1 line plotted. me multi-lines please? also, need adjust line width, color, etc. of lines.

the code follows:

# -*- coding: utf-8 -*-   """ demo demonstrates how draw dynamic mpl (matplotlib)  plot in wxpython application. allows "live" plotting manual zooming specific regions. both x , y axes allow "auto" or "manual" settings. y, auto mode sets scaling of graph see data points. x, auto mode makes graph "follow" data. set x min manual 0 see whole data beginning. note: press enter in 'manual' text box make new value  affect plot. eli bendersky (eliben@gmail.com) license: code in public domain last modified: 31.07.2008 """ import os import pprint import random import sys import wx  # recommended way use wx mpl wxagg # backend.  # import matplotlib matplotlib.use('wxagg') matplotlib.figure import figure matplotlib.backends.backend_wxagg import \     figurecanvaswxagg figcanvas, \     navigationtoolbar2wxagg navigationtoolbar import numpy np import pylab  class datagen(object):     """ silly class generates pseudo-random data         display in plot.     """     def __init__(self, init=50):         self.data = self.init = init      def next(self):         self._recalc_data()         return self.data      def _recalc_data(self):         delta = random.uniform(-0.5, 0.5)         r = random.random()          if r > 0.9:             self.data += delta * 15         elif r > 0.8:              # attraction initial value             delta += (0.5 if self.init > self.data else -0.5)             self.data += delta         else:             self.data += delta   class boundcontrolbox(wx.panel):     """ static box couple of radio buttons , text         box. allows switch between automatic mode ,          manual mode associated value.     """     def __init__(self, parent, id, label, initval):         wx.panel.__init__(self, parent, id)          self.value = initval          box = wx.staticbox(self, -1, label)         sizer = wx.staticboxsizer(box, wx.vertical)          self.radio_auto = wx.radiobutton(self, -1,              label="auto", style=wx.rb_group)         self.radio_manual = wx.radiobutton(self, -1,             label="manual")         self.manual_text = wx.textctrl(self, -1,              size=(35,-1),             value=str(initval),             style=wx.te_process_enter)          self.bind(wx.evt_update_ui, self.on_update_manual_text, self.manual_text)         self.bind(wx.evt_text_enter, self.on_text_enter, self.manual_text)          manual_box = wx.boxsizer(wx.horizontal)         manual_box.add(self.radio_manual, flag=wx.align_center_vertical)         manual_box.add(self.manual_text, flag=wx.align_center_vertical)          sizer.add(self.radio_auto, 0, wx.all, 10)         sizer.add(manual_box, 0, wx.all, 10)          self.setsizer(sizer)         sizer.fit(self)      def on_update_manual_text(self, event):         self.manual_text.enable(self.radio_manual.getvalue())      def on_text_enter(self, event):         self.value = self.manual_text.getvalue()      def is_auto(self):         return self.radio_auto.getvalue()      def manual_value(self):         return self.value   class graphframe(wx.frame):     """ main frame of application     """     title = 'demo: dynamic matplotlib graph'      #修改下面self.redraw_timer.start(100)数值影响plot下一个数据点的速度，越大速度越慢      def __init__(self):         wx.frame.__init__(self, none, -1, self.title)          self.datagen = datagen()         self.data = [self.datagen.next()]         self.paused = false          self.create_menu()         self.create_status_bar()         self.create_main_panel()          self.redraw_timer = wx.timer(self)         self.bind(wx.evt_timer, self.on_redraw_timer, self.redraw_timer)                 self.redraw_timer.start(100)      def create_menu(self):         self.menubar = wx.menubar()          menu_file = wx.menu()         m_expt = menu_file.append(-1, "&save plot\tctrl-s", "save plot file")         self.bind(wx.evt_menu, self.on_save_plot, m_expt)         menu_file.appendseparator()         m_exit = menu_file.append(-1, "e&xit\tctrl-x", "exit")         self.bind(wx.evt_menu, self.on_exit, m_exit)          self.menubar.append(menu_file, "&file")         self.setmenubar(self.menubar)      def create_main_panel(self):         self.panel = wx.panel(self)          self.init_plot()         self.canvas = figcanvas(self.panel, -1, self.fig)          self.xmin_control = boundcontrolbox(self.panel, -1, "x min", 0)         self.xmax_control = boundcontrolbox(self.panel, -1, "x max", 50)         self.ymin_control = boundcontrolbox(self.panel, -1, "y min", 0)         self.ymax_control = boundcontrolbox(self.panel, -1, "y max", 100)          self.pause_button = wx.button(self.panel, -1, "pause")         self.bind(wx.evt_button, self.on_pause_button, self.pause_button)         self.bind(wx.evt_update_ui, self.on_update_pause_button, self.pause_button)          self.cb_grid = wx.checkbox(self.panel, -1,              "show grid",             style=wx.align_right)         self.bind(wx.evt_checkbox, self.on_cb_grid, self.cb_grid)         self.cb_grid.setvalue(true)          self.cb_xlab = wx.checkbox(self.panel, -1,              "show x labels",             style=wx.align_right)         self.bind(wx.evt_checkbox, self.on_cb_xlab, self.cb_xlab)                 self.cb_xlab.setvalue(true)          self.hbox1 = wx.boxsizer(wx.horizontal)         self.hbox1.add(self.pause_button, border=5, flag=wx.all | wx.align_center_vertical)         self.hbox1.addspacer(20)         self.hbox1.add(self.cb_grid, border=5, flag=wx.all | wx.align_center_vertical)         self.hbox1.addspacer(10)         self.hbox1.add(self.cb_xlab, border=5, flag=wx.all | wx.align_center_vertical)          self.hbox2 = wx.boxsizer(wx.horizontal)         self.hbox2.add(self.xmin_control, border=5, flag=wx.all)         self.hbox2.add(self.xmax_control, border=5, flag=wx.all)         self.hbox2.addspacer(24)         self.hbox2.add(self.ymin_control, border=5, flag=wx.all)         self.hbox2.add(self.ymax_control, border=5, flag=wx.all)          self.vbox = wx.boxsizer(wx.vertical)         self.vbox.add(self.canvas, 1, flag=wx.left | wx.top | wx.grow)                 self.vbox.add(self.hbox1, 0, flag=wx.align_left | wx.top)         self.vbox.add(self.hbox2, 0, flag=wx.align_left | wx.top)          self.panel.setsizer(self.vbox)         self.vbox.fit(self)      def create_status_bar(self):         self.statusbar = self.createstatusbar()      def init_plot(self):         self.dpi = 100         self.fig = figure((3.0, 3.0), dpi=self.dpi)          self.axes = self.fig.add_subplot(111)         self.axes.set_axis_bgcolor('gainsboro')         self.axes.set_title('very important random data', size=12)          pylab.setp(self.axes.get_xticklabels(), fontsize=8)         pylab.setp(self.axes.get_yticklabels(), fontsize=8)          # plot data line series, , save reference          # plotted line series         #         self.plot_data = self.axes.plot(             self.data,              linewidth=1,             color=(1, 1, 0),             )[0]      # 修改下面1000可以修改图标put出来的数据量      def draw_plot(self):         """ redraws plot         """         # when xmin on auto, "follows" xmax produce          # sliding window effect. therefore, xmin assigned after         # xmax.         #         if self.xmax_control.is_auto():             xmax = len(self.data) if len(self.data) > 1000 else 1000         else:             xmax = int(self.xmax_control.manual_value())          if self.xmin_control.is_auto():                         xmin = xmax - 1000         else:             xmin = int(self.xmin_control.manual_value())          # ymin , ymax, find minimal , maximal values         # in data set , add mininal margin.         #          # note it's easy change scheme          # minimal/maximal value in current display, , not         # whole data set.         #          if self.ymin_control.is_auto():             ymin = round(min(self.data), 0) - 1         else:             ymin = int(self.ymin_control.manual_value())          if self.ymax_control.is_auto():             ymax = round(max(self.data), 0) + 1         else:             ymax = int(self.ymax_control.manual_value())          self.axes.set_xbound(lower=xmin, upper=xmax)         self.axes.set_ybound(lower=ymin, upper=ymax)          # anecdote: axes.grid assumes b=true if other flag         # given if b set false.         # passing flag first statement won't         # work.         #         if self.cb_grid.ischecked():             self.axes.grid(true, color='gray')         else:             self.axes.grid(false)          # using setp here convenient, because get_xticklabels         # returns list on 1 needs explicitly          # iterate, , setp handles this.         #           pylab.setp(self.axes.get_xticklabels(),              visible=self.cb_xlab.ischecked())          self.plot_data.set_xdata(np.arange(len(self.data)))         self.plot_data.set_ydata(np.array(self.data))          self.canvas.draw()      def on_pause_button(self, event):         self.paused = not self.paused      def on_update_pause_button(self, event):         label = "resume" if self.paused else "pause"         self.pause_button.setlabel(label)      def on_cb_grid(self, event):         self.draw_plot()      def on_cb_xlab(self, event):         self.draw_plot()      def on_save_plot(self, event):         file_choices = "png (*.png)|*.png"          dlg = wx.filedialog(             self,              message="save plot as...",             defaultdir=os.getcwd(),             defaultfile="plot.png",             wildcard=file_choices,             style=wx.save)          if dlg.showmodal() == wx.id_ok:             path = dlg.getpath()             self.canvas.print_figure(path, dpi=self.dpi)             self.flash_status_message("saved %s" % path)      def on_redraw_timer(self, event):         # if paused not add data, still redraw plot         # (to respond scale modifications, grid change, etc.)         #         if not self.paused:             self.data.append(self.datagen.next())          self.draw_plot()      def on_exit(self, event):         self.destroy()      def flash_status_message(self, msg, flash_len_ms=1500):         self.statusbar.setstatustext(msg)         self.timeroff = wx.timer(self)         self.bind(             wx.evt_timer,              self.on_flash_status_off,              self.timeroff)         self.timeroff.start(flash_len_ms, oneshot=true)      def on_flash_status_off(self, event):         self.statusbar.setstatustext('')   if __name__ == '__main__':     app = wx.pysimpleapp()     app.frame = graphframe()     app.frame.show()     app.mainloop()