Plot one line with multiple line styles

Question

The data:

x = 300, 300, 300, 300, 300

y = 1200, 900, 200, -600, -1371

I already plot with matplotlib using plt.plot(x, y, marker='s', linestyle='dotted') yet it just show one style.

Is it possible if I want to make the line plot with two different line styles, from (300,1200) to (200,300) with solid style and then the rest is dotted.

Please help. Thanks

You need to split the data and plot as separate lines – GhandiFloss Sep 09 '20 at 09:53 — GhandiFloss, Sep 09 '20 at 09:53

score 1 · Accepted Answer · answered Sep 09 '20 at 10:02

1

As I stated in the comments you will need to split up your data like so:

x_dotted = x[3:]
y_dotted = y[3:]

x_solid = x[:3]
y_solid = y[:3]

Then just call plt.plot with your desired parameters

answered Sep 09 '20 at 10:02

GhandiFloss

392
1
6

score 1 · Answer 2 · answered Sep 09 '20 at 20:25

I think this answer is good for your question. I tried to modify it for line styles. For more information read about LineCollection.

import numpy as np
from matplotlib.collections import LineCollection
import matplotlib.pyplot as plt


x = np.array([300, 300, 300, 300, 300])
y = np.array([1200, 900, 200, -600, -1371])


points = np.array([x, y]).T.reshape(-1, 1, 2)


segments = np.concatenate([points[:3], points[-3:]], axis=1)
line_styles = [("dashed"),("solid")]

lc = LineCollection(segments, linestyles=line_styles, color='black')

fig,a = plt.subplots()
a.add_collection(lc)
a.set_xlim(0,500)
a.set_ylim(-1500,1500)
plt.show()

Plot one line with multiple line styles

2 Answers2