[Visualization] Contour Plot(등고선)

 

 

 

In [4]:

import numpy as np
import matplotlib.tri as tri
import pandas as pd

import matplotlib as mpl
import matplotlib.pyplot as plt

 

In [5]:

npts = 100
x = np.random.uniform(-2, 2, npts)
y = np.random.uniform(-2, 2, npts)
z = x * np.exp(-x**2 - y**2)
ngridx = 100
ngridy = 100
xi = np.linspace(-2.2, 2.2, ngridx)
yi = np.linspace(-2.2, 2.2, ngridy)
triang = tri.Triangulation(x, y)
interpolator = tri.LinearTriInterpolator(triang, z)
Xi, Yi = np.meshgrid(xi, yi)
zi = interpolator(Xi, Yi)

plt.contour(xi, yi, zi, colors='black')

 

Out[5]:

<matplotlib.contour.QuadContourSet at 0x178b1237e90>

 

 

In [8]:

plt.contour(xi, yi, zi, 20, cmap='RdGy')
plt.colorbar()

 

Out[8]:

<matplotlib.colorbar.Colorbar at 0x178b1c8eed0>

 

 

In [9]:

plt.contourf(xi, yi, zi, 20, cmap='RdGy') # 내부 색칠
plt.colorbar()

 

Out[9]:

<matplotlib.colorbar.Colorbar at 0x178b1dae360>

 

 

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