用python制作非数值型x轴直方图
用python制作非数值型x轴直方图
提问于 2018-07-23 08:54:40
我有一个快速/肮脏的脚本，它将质量分类为光谱类型，并制作一个质量直方图，如下所示
import matplotlib.pyplot as plt
import numpy as np
% matplotlib inline
star_masses = np.array([0.359, 0.325,0.842, 0.359, 0.245, 0.445, 0.558, 0.117, 0.245, 0.177, 0.558, 0.058, 0.637, 0.222, 0.245, 0.039, 0.177])
M2 = []
M12 = []
K7 = []
M6 = []
M1 = []
M0 = []
M5 = []
M35 = []
M42 = []
M625 = []
M37 = []
T6 = []
M8 = []
for i in star_masses:
if i == 0.359:
M2.append(i)
if i == 0.325:
M12.append(i)
if i == 0.842:
K7.append(i)
if i == 0.245:
M6.append(i)
if i == 0.445:
M1.append(i)
if i == 0.558 or 0.637:
M0.append(i)
if i == 0.117:
M5.append(i)
if i == 0.245:
M35.append(i)
if i == 0.058:
M625.append(i)
if i == 0.222:
M37.append(i)
if i == 0.039:
T6.append(i)
if i == 0.177:
M8.append(i)
plt.hist(star_masses, bins = 15)
plt.xlabel('Stellar Mass')
plt.ylabel('# of Stars')
plt.title ('Stellar Mass')我正在尝试制作光谱类型的直方图，以便每个bin都是x轴上的光谱类型的名称，y轴是恒星的数量，但我不知道如何在x轴上获得非数值的值
回答 1
Stack Overflow用户
发布于 2018-07-23 09:17:44
您可以使用set_xticklabels
import matplotlib.pyplot as plt
import numpy as np
star_masses = np.array([0.359, 0.325,0.842, 0.359, 0.245, 0.445, 0.558, 0.117, 0.245, 0.177, 0.558, 0.058, 0.637, 0.222, 0.245, 0.039, 0.177])
star_names= ['star%i'%ii for ii in range(13)]
M2 = []
M12 = []
K7 = []
M6 = []
M1 = []
M0 = []
M5 = []
M35 = []
M42 = []
M625 = []
M37 = []
T6 = []
M8 = []
for i in star_masses:
if i == 0.359:
M2.append(i)
if i == 0.325:
M12.append(i)
if i == 0.842:
K7.append(i)
if i == 0.245:
M6.append(i)
if i == 0.445:
M1.append(i)
if i == 0.558 or 0.637:
M0.append(i)
if i == 0.117:
M5.append(i)
if i == 0.245:
M35.append(i)
if i == 0.058:
M625.append(i)
if i == 0.222:
M37.append(i)
if i == 0.039:
T6.append(i)
if i == 0.177:
M8.append(i)
f, ax = plt.subplots()
ax.hist(star_masses, bins = 15)
ax.set_xlabel('Stellar Mass')
ax.set_xticklabels(star_names)
ax.set_ylabel('# of Stars')
ax.set_title ('Stellar Mass')
plt.show()页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51470408
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