![Matplotlib Series [Part7] Bar Plot](/images/matplotlib_logo.png){kind=logo}
Table of Contents
import numpy as np
import matplotlib.pyplot as plt
data = [1, 4, 3, 2]
x_label = ['a', 'b', 'c', 'd']
기본 막대
fig, ax = plt.subplots(figsize=(4, 3))
ax.bar(x_label, data)
막대 꾸미기
fig, ax = plt.subplots(figsize=(4, 3))
ax.bar(x_label, data, facecolor='skyblue', edgecolor='darkblue', hatch='/')
정렬하기
fig, ax = plt.subplots(figsize=(4, 3))
sorted_x_idx = np.argsort(data)
sorted_x_label = np.array(x_label)[sorted_x_idx]
sorted_data = np.array(data)[sorted_x_idx]
ax.bar(sorted_x_label, sorted_data)
여러 막대 그래프
fig, ax = plt.subplots(figsize=(4, 3))
WIDTH = 0.4
x_idx = np.arange(len(data))
data_1 = [1, 4, 6, 2]
data_2 = [4, 2, 1, 7]
ax.bar(x_idx - WIDTH/2, data_1, width=WIDTH)
ax.bar(x_idx + WIDTH/2, data_2, width=WIDTH)
ax.set_xticks(x_idx)
ax.set_xticklabels(['a', 'b', 'c', 'd'])
fig, ax = plt.subplots(figsize=(6, 3))
WIDTH = 0.2
x_idx = np.arange(len(data))
data_1 = [1, 4, 6, 2]
data_2 = [4, 2, 1, 7]
data_3 = [2, 5, 6, 8]
ax.bar(x_idx - WIDTH, data_1, width=WIDTH)
ax.bar(x_idx, data_2, width=WIDTH)
ax.bar(x_idx + WIDTH, data_3, width=WIDTH)
ax.set_xticks(x_idx)
ax.set_xticklabels(['a', 'b', 'c', 'd'])
막대에 텍스트 넣기
fig, ax = plt.subplots(figsize=(4, 3))
rects = ax.bar(x_label, data)
for rect_idx, rect in enumerate(rects):
x = rect.get_x()
width = rect.get_width()
height = rect.get_height()
ax.text(x + width/2, height + 0.05, str(round(data[rect_idx])),
rotation=20, ha='center', fontsize=10)
수평 막대
fig, ax = plt.subplots(figsize=(4, 3))
ax.barh(x_label, data)
fig, ax = plt.subplots(figsize=(4, 3))
ax.barh(x_label, data)
ax.invert_yaxis()
