Python pandas, Plotting options for multiple lines

Question

I want to plot multiple lines from a pandas dataframe and setting different options for each line. I would like to do something like

testdataframe=pd.DataFra         


        

Answer 1

Considering the dataframe testdataframe

testdataframe = pd.DataFrame(np.arange(12).reshape(4,3))

print(testdataframe)

   0   1   2
0  0   1   2
1  3   4   5
2  6   7   8
3  9  10  11

You can combine styles into a single list of strings as in styles defined below. I'll also define the linewidths in lws

styles=['bs-', 'ro-', 'y^-']
lws = [2, 1, 1]

We can use the plot method on the testdataframe passing the list styles to the style parameter. Note that we could have also passed a dictionary (and probably other things as well).

However, line widths are not as easily handled. I first capture the AxesSubplot object and iterate over the lines attribute setting the line width.

ax = testdataframe.plot(style=styles)
for i, l in enumerate(ax.lines):
    plt.setp(l, linewidth=lws[i])