2020-04-16 14:05:01 --Edit by yangray 按横轴刻度的种类不同,分为数值类刻度和日期类刻度. 数值类刻度 需求:x轴数据间隔为2,显示最后24条数据. #!/usr/bin/python # _*_ Coding: Utf-8 _*_ import random import matplotlib.pyplot as plt xs = [i*2 for i in range(200)] ys = [10 + random.randint(1, 8) for i
之前我们一直在讲述线段图,这次讲述散点图. 散点图的生成很简单,只要调用plt.scatter()函数就可以. 例如: import numpy as np import pandas as pd import matplotlib.pyplot as plt # 生成100*100随机点 x = np.random.randn(100) y = np.random.randn(100) # 画散点图,并用随机颜色来显示,只是为了增加美观而已 plt.scatter(x, y, c=np.ran
from sklearn import model_selection from sklearn.linear_model import LogisticRegression from sklearn import metrics # generalization of test and train set X_train, X_test, y_train, y_test = model_selection.train_test_split(X, y, test_size=0.5, random
正在学习<用python做科学计算>,在练习最小二乘法时遇到matplotlib无法显示中文的问题.查资料,感觉动态的加上几条语句是最好,这里贴上全部的代码. # -*- coding: utf-8 -*- """ Created on Wed Aug 10 23:20:26 2016 @author: Administrator """ import numpy as np from scipy.optimize import le