首页ValueError: Expected 1D or 2D array, got 0D array instead

ValueError: Expected 1D or 2D array, got 0D array instead

时间: 2024-05-15 19:15:38 浏览: 461

python3.7解决最小二乘遇到ValueError:Expected 2D array, got 1D array instead: array=[5.].关于reshape和predict

在用python的LinearRegression做最小二乘时遇到如下错误： ValueError: Expected 2D array, got 1D array instead: array=[5.]. Reshape your data either using array.reshape(-1, 1) if your data has a single feature or array.reshape(1, -1) if it contains a single sample. 翻译过来是： ValueError：预期为2D数组，改为获取1D数组：数组= [5.]。如果数据具有单个

This error occurs when you try to pass a scalar value (0D array) to a function that expects a 1D or 2D array as input. For example, if you have a function that takes an array of numbers and you pass a single number instead of an array, you will get this error. To fix this error, make sure that you pass an array with the correct dimensions to the function. If you want to pass a single value, you can create a 1D array with that value using the numpy library: ```python import numpy as np # create a 1D array with a single value a = np.array([5]) # pass the array to the function result = my_function(a) ``` Alternatively, you can modify the function to handle scalar values properly.

阅读全文