fig = plt.figure(figsize=(9,6),
facecolor='khaki'
)
ax = fig.gca(projection='3d')
# 二元函數定義域平面集
x = np.linspace(start=-3,
stop=3,
num=100
)
y = np.linspace(start=-3,
stop=3,
num=100
)
X, Y = np.meshgrid(x, y) # 網格數據
Z = np.power(X, 2) + np.power(Y, 2) # 二元函數 z = x**2 + y**2
# 繪圖
surf = ax.plot_surface(X=X,
Y=Y,
Z=Z,
rstride=2, # row stride, 行跨度
cstride=2, # column stride, 列跨度
color='r',
linewidth=0.5,
)
# 調整視角
ax.view_init(elev=7, # 仰角
azim=30 # 方位角
)
# 顯示圖形
plt.show()
fig = plt.figure(figsize=(9,6),
facecolor='khaki'
)
ax = fig.gca(projection='3d')
# 二元函數定義域平面集
x = np.linspace(start=-3,
stop=3,
num=100
)
y = np.linspace(start=-3,
stop=3,
num=100
)
X, Y = np.meshgrid(x, y) # 網格數據
Z = np.power(X, 2) + np.power(Y, 2) # 二元函數 z = x**2 + y**2
# 繪圖
surf = ax.plot_surface(X=X,
Y=Y,
Z=-Z,
rstride=2, # row stride, 行跨度
cstride=2, # column stride, 列跨度
color='g',
linewidth=0.5,
)
# 調整視角
ax.view_init(elev=7, # 仰角
azim=30 # 方位角
)
# 顯示圖形
plt.show()
fig = plt.figure(figsize=(24, 16),
facecolor='khaki'
)
# 二元函數定義域平面集
x = np.linspace(start=-3,
stop=3,
num=100
)
y = np.linspace(start=-3,
stop=3,
num=100
)
X, Y = np.meshgrid(x, y) # 網格數據
Z = np.power(X, 2) + np.power(Y, 2) # 二元函數 z = x**2 + y**2
# -------------------------------- subplot(221) --------------------------------
ax = fig.add_subplot(221, projection='3d')
# 開口向上的拋物面
surf = ax.plot_surface(X=X,
Y=Y,
Z=Z,
rstride=2, # row stride, 行跨度
cstride=2, # column stride, 列跨度
color='r',
linewidth=0.5,
)
# -------------------------------- subplot(223) --------------------------------
ax = fig.add_subplot(223, projection='3d')
# 開口向下的拋物面
surf = ax.plot_surface(X=X,
Y=Y,
Z=-Z,
rstride=2, # row stride, 行跨度
cstride=2, # column stride, 列跨度
color='g',
linewidth=0.5,
)
# -------------------------------- subplot(22, (2,4)) --------------------------------
ax = plt.subplot2grid(shape=(2,2),
loc=(0, 1),
rowspan=2,
projection='3d'
)
# 開口向上的拋物面
surf1 = ax.plot_surface(X=X,
Y=Y,
Z=Z,
rstride=2, # row stride, 行跨度
cstride=2, # column stride, 列跨度
color='r',
linewidth=0.5,
)
# 開口向下的拋物面
surf2 = ax.plot_surface(X=X,
Y=Y,
Z=-Z,
rstride=2, # row stride, 行跨度
cstride=2, # column stride, 列跨度
color='g',
linewidth=0.5,
)
# 調整視角
ax.view_init(elev=7, # 仰角
azim=30 # 方位角
)
# -------------------------------- fig --------------------------------
# 調整子區布局
fig.subplots_adjust(wspace=0.1, # width space
hspace=0.15 # height space
)
# 顯示圖形
plt.show()
