ValueError: x and y must be the same size

Question

import numpy as np
import pandas as pd
import matplotlib.pyplot as pt

data1 = pd.read_csv(\'stage1_labels.csv\')

X = data1.iloc[:, :-1].values
y = data1.iloc[:, 1]         


        

Answer 1

Print X_train shape. What do you see? I'd bet X_train is 2d (matrix with a single column), while y_train 1d (vector). In turn you get different sizes.

I think using X_train[:,0] for plotting (which is from where the error originates) should solve the problem