1、ValueError: c of shape (150, 1) not acceptable
<h3>运行出现错误error</h3>
<pre><code>ValueError: c of shape (150, 1) not acceptable as a color sequence for x wit</code></pre>
<pre><code>import matplotlib.pyplot as plt
import numpy as np
data = []
label = []
np.random.seed(0)
# 以原点为圆心，半径为1的圆把散点划分成红蓝两部分，并加入随机噪音。
for i in range(150):
x1 = np.random.uniform(-1,1)
x2 = np.random.uniform(0,2)
if x1**2 + x2**2 <= 1:
data.append([np.random.normal(x1, 0.1),np.random.normal(x2,0.1)])
label.append(0)
else:
data.append([np.random.normal(x1, 0.1), np.random.normal(x2, 0.1)])
label.append(1)
data = np.hstack(data).reshape(-1,2)
label = np.hstack(label).reshape(-1, 1)
plt.scatter(data[:,0], data[:,1], c = np.squeeze(label),
cmap="RdBu", vmin=-.2, vmax=1.2, edgecolor="white")
plt.show()
</code></pre>
<p>修改</p>
<pre><code>修改：plt.scatter(data[:,0], data[:,1], c=label,cmap="RdBu", vmin=-.2, vmax=1.2, edgecolor="white")改为：plt.scatter(data[:,0], data[:,1], c=np.squeeze（label）,cmap="RdBu", vmin=-.2, vmax=1.2, edgecolor="white")</code></pre>
<p>即把<code>c=label</code>改为<code>c=np.squeeze（label）</code></p>
<p><a href="https://github.com/lduml/img/blob/master/matplotlib/img_red_blue.png?raw=true"><img src="https://github.com/lduml/img/blob/master/matplotlib/img_red_blue.png?raw=true" alt="" /></a></p>