How do I plot a line graph with dots for each data point using MatPlotLib in Python?

Question

My desired outcome is a graph that looks like this

ax.plot(df.x, df.y, 'b.-')

where a line is generated with a dot at every location there is a data point. But I also want specific colors like "lightsteelblue".

When I try plotting

ax.plot(df.x, df.y, color='lightsteelblue', ls='.-')

a value error comes up that '.-' is not supported with "ls". Any ideas on how to get around this?

Thanks for your time, -Bojan

can you provide a full reproducible code and a schematic of the expected output? — mozway, Mar 15 '22 at 12:53

score 6 · Accepted Answer · answered Mar 15 '22 at 13:36

6

below code should work for you

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(0, np.random.randint(1, 7) , 10)
y = np.linspace(0, np.random.randint(7, 9), 10)

fig, ax = plt.subplots()

ax.plot(x, y, **{'color': 'lightsteelblue', 'marker': 'o'})

plt.show()

output

answered Mar 15 '22 at 13:36

gftea

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in addition `markevery=n` can limit the number of markers, one out of n. – mins Dec 10 '22 at 18:30

score 3 · Answer 2 · answered Mar 15 '22 at 13:36

3

The argument ls is short for linestyle, but you're trying to also pass it a marker style. But to pass a marker style you need to use the marker argument, e.g.

ax.plot(x, y, color='black', ls='-', marker='.')

answered Mar 15 '22 at 13:36

flawr

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3
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How do I plot a line graph with dots for each data point using MatPlotLib in Python?

2 Answers2