import pandas as pd import numpy as np import matplotlib.pyplot as plt from sklearn.datasets import load_iris iris = load_iris() #加载鸢尾花数据集 iris_feature = iris.data #特征数据 iris_target = iris.target #分类数据 iris_f = np.ones(iris_feature.shape) iris_t = np.ones(iris_target.shape) iris_joint = np.concatenate((iris_feature,iris_f),axis=0) #axis=0沿着纵轴拼接，axis=1沿着横轴拼接 iris_joint2 = np.concatenate((iris_target,iris_t),axis=0)
结果
import pandas as pd import numpy as np import matplotlib.pyplot as plt from sklearn.datasets import load_iris iris = load_iris() #加载鸢尾花数据集 iris_feature = iris.data #特征数据 iris_target = iris.target #分类数据 iris_f = np.ones(iris_feature.shape) iris_t = np.ones(iris_target.shape) iris_target = iris_target.reshape(len(iris_target),1) #将一维数组转为二维数组 iris_t = iris_t.reshape(len(iris_t),1) iris_joint = np.concatenate((iris_feature,iris_f),axis=0) #axis=0沿着纵轴拼接，axis=1沿着横轴拼接 iris_joint2 = np.concatenate((iris_target,iris_t),axis=0)
结果
