Python print error bar with only 3 values (Min, Max and the current value)

Question

How to display a kind of errorbar with only 3 Values : For example :

Max = 20 Min = 10 Current = 15

Output excepted :

The following is not working :

ax.errorbar([0,1], [10,20], yerr=15, fmt='o', color='black',
             ecolor='lightgray', elinewidth=3, capsize=0);

What am I doing wrong ?

Answer 1

See: https://matplotlib.org/stable/api/_as_gen/matplotlib.pyplot.errorbar.html

import numpy as np
import matplotlib.pyplot as plt

x = np.arange(10)

y = x + 15
y_err_min = y - 5
y_err_max = y + 5

y_err = np.stack([y - y_err_min, y_err_max - y])

fig = plt.figure()
plt.errorbar(x, y, yerr=y_err)

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For your specific problem, you can use the code below:

import numpy as np
import matplotlib.pyplot as plt

x = 0
y = 15
y_err = [[5], [5]]

fig = plt.figure()
plt.errorbar(x, y, yerr=y_err, marker='o', markerfacecolor='blue', markeredgecolor='blue', linestyle='-', color='red', capsize=10)