matplotlib - <matplotlib.text.Text at 0x7fc3298533d0>

쥬피터 노트북에서 다음과 같이 그래프가 보이지 않는 경우 

In [3]:

# 속성을 표준화한다
scaler = preprocessing.StandardScaler().fit(X_train)
X_train = scaler.transform(X_train)
X_test = scaler.transform(X_test)

In [4]:

import matplotlib.pyplot as plt
colors = ['red', 'greenyellow', 'blue']
for i in xrange(len(colors)):
    xs = X_train[:,0][y_train == i]
    ys = X_train[:,1][y_train == i]
    plt.scatter(xs, ys, c=colors[i])
plt.legend(iris.target_names) 
plt.xlabel('Sepal length')
plt.ylabel('Sepal width')

Out[4]:

<matplotlib.text.Text at 0x7fc3298533d0>

아래의 3라인을 추가한다. 그래프가 정상 출력됨을 확인할 수 있다.

%matplotlib inline
 
import matplotlib
import numpy as np

In [3]:

# 속성을 표준화한다
scaler = preprocessing.StandardScaler().fit(X_train)
X_train = scaler.transform(X_train)
X_test = scaler.transform(X_test)

In [4]:

%matplotlib inline

import matplotlib
import numpy as np
import matplotlib.pyplot as plt
colors = ['red', 'greenyellow', 'blue']
for i in xrange(len(colors)):
    xs = X_train[:,0][y_train == i]
    ys = X_train[:,1][y_train == i]
    plt.scatter(xs, ys, c=colors[i])
plt.legend(iris.target_names) 
plt.xlabel('Sepal length')
plt.ylabel('Sepal width')

Out[4]:

<matplotlib.text.Text at 0x7ff9bf1e6690>