Issue plotting a scatterplot with matplot

Question

I tried to plot some figures inside a for loop from jupyter notebook:

for i in range(4):
    df = pd.DataFrame()
    df['x'] = features[:, 0]
    df['y'] = features[:, 1]

    plt.plot(df["x"], df["y"])
    plt.show()

I got the following for the first figure. Do you know what is the problem please?

Answer 1

Use pyplot.scatter() for scatter graph and pyplot.plot() for line graph.