From 4ad92514f8d474f375d1d16588316a427f6ce760 Mon Sep 17 00:00:00 2001
From: yangyonggit <byangyong@gmail.com>
Date: Wed, 17 May 2023 10:41:51 +0800
Subject: [PATCH] =?UTF-8?q?-=E4=BF=AE=E6=AD=A3=E4=BA=86=EF=BC=8C=E5=9B=BE?=
 =?UTF-8?q?=E5=83=8F=E6=B2=A1=E7=94=BB=E5=9C=A8=E4=B8=80=E5=BC=A0=E7=94=BB?=
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---
 Book4_Ch08_Python_Codes/Bk4_Ch8_01.py |  2 ++
 Book4_Ch08_Python_Codes/Bk4_Ch8_02.py | 11 +++++++----
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/Book4_Ch08_Python_Codes/Bk4_Ch8_01.py b/Book4_Ch08_Python_Codes/Bk4_Ch8_01.py
index be711ae..f5a6856 100644
--- a/Book4_Ch08_Python_Codes/Bk4_Ch8_01.py
+++ b/Book4_Ch08_Python_Codes/Bk4_Ch8_01.py
@@ -71,3 +71,5 @@ def plot_shape(X,copy = False):
 ax.spines['left'].set_visible(False)
 plt.xlabel('$x_1$')
 plt.ylabel('$x_2$')
+
+plt.show()
\ No newline at end of file
diff --git a/Book4_Ch08_Python_Codes/Bk4_Ch8_02.py b/Book4_Ch08_Python_Codes/Bk4_Ch8_02.py
index 1a83b33..92d3ab0 100644
--- a/Book4_Ch08_Python_Codes/Bk4_Ch8_02.py
+++ b/Book4_Ch08_Python_Codes/Bk4_Ch8_02.py
@@ -27,6 +27,8 @@ def plot_shape(X,copy = False):
              markeredgecolor = edge_color*0.5,
              linestyle = 'None') 
 
+    
+
 X = np.array([[1,1],
               [0,-1],
               [-1,-1],
@@ -35,12 +37,11 @@ def plot_shape(X,copy = False):
 # visualizations
 
 thetas = np.linspace(30, 330, num=11)
+fig, ax = plt.subplots()
 
-for theta in thetas:
+for theta in thetas:  
     
-    fig, ax = plt.subplots()
-    
-    theta = theta/180*np.pi;
+    theta = theta/180*np.pi
     # rotation
     R = np.array([[np.cos(theta),  np.sin(theta)],
                   [-np.sin(theta), np.cos(theta)]])
@@ -66,3 +67,5 @@ def plot_shape(X,copy = False):
     ax.spines['left'].set_visible(False)
     plt.xlabel('$x_1$')
     plt.ylabel('$x_2$')
+
+plt.show()