from pylab import * from matplotlib.collections import LineCollection from matplotlib.colors import ColorConverter colorConverter = ColorConverter() # In order to efficiently plot many lines in a single set of axes, # Matplotlib has the ability to add the lines all at once. Here is a # simple example showing how it is done. x = arange(200) # Here are many sets of y to plot vs x ys = [x+i for i in x] # We need to set the plot limits, the will not autoscale ax = axes() ax.set_xlim((amin(x),amax(x))) ax.set_ylim((amin(amin(ys)),amax(amax(ys)))) # colors is sequence of rgba tuples # linestyle is a string or dash tuple. Legal string values are # solid|dashed|dashdot|dotted. The dash tuple is (offset, onoffseq) # where onoffseq is an even length tuple of on and off ink in points. # If linestyle is omitted, 'solid' is used # See matplotlib.collections.LineCollection for more information line_segments = LineCollection([zip(x,y) for y in ys], # Make a sequence of x,y pairs linewidths = (0.5,1,1.5,2), colors = [colorConverter.to_rgba(i) \ for i in ('b','g','r','c','m','y','k')], linestyle = 'solid') ax.add_collection(line_segments) show()

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