資料作りのためのmatplotlib入門(2) 2次元contour図 ref: https://qiita.com/Bluepost59/items/a0869aee34db3f450162

contour.py

import numpy as np
import matplotlib as mpl
mpl.use('Agg')
import matplotlib.pyplot as plt

nx = 100
ny = 200

mydata = np.loadtxt('mydata.txt')
xx = np.linspace(0,nx,nx)
yy = np.linspace(0,ny,ny)

xx,yy = np.meshgrid(xx,yy)

zz = mydata[:,2].reshape(nx,ny).T

myfig = plt.figure()
myax = myfig.add_subplot(1,1,1)

myim = myax.pcolor(xx,yy,zz)
myfig.colorbar(myim)

myfig.savefig('contour.png')

file0.f

do i = 1,Nx
   do j = 1,Ny
      write(UNITNUM,*) i,j,A(i,j)
   end do
end do

file1.txt

1 1 0.000
1 2 1.000
...
1 10 0.424
2 1 0.242
...
10 10 0.551