On Tue, Apr 14, 2009 at 8:09 AM, Chaitanya Krishna <[email protected]> wrote:
> Hello all,
>
> Usually when I plot two or more lines, the color of the lines change.
> Is it possible to change this default behavior so that when I plot two
> or more lines, the symbols change and not the color.
>
> This would be useful if someone is trying to make plots in black and
> white so that the symbols change instead of line colors.
You can do this with a little manual intervention -- below is a script
which cycles through all of mpl's line markers.
import numpy as np
import matplotlib.lines as lines
import matplotlib.pyplot as plt
markers = list(lines.Line2D.markers.keys())
markers.sort()
N = len(markers)
fig = plt.figure()
ax = fig.add_subplot(111)
x = np.arange(20)
for i in range(50):
marker = markers[i%N]
print marker
y = i*x
ax.plot(x, y, marker=marker, linestyle='', mfc='blue')
plt.show()
You could do a similar trick with linestyles using the
lines.Line2D.lineStyles and lines.Line2D.drawStyles dictionaries
(these map the symbols to the internal Line2D function we use to draw
the symbols). See also
http://matplotlib.sourceforge.net/examples/pylab_examples/line_styles.html
JDH
>
> Regards,
> Chaitanya
>
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