def saveCur(cur, num_cells):
m.imsave('tmat:n={}'.format(num_cells), cur, cmap=plt.cm.gray)
print('determining tmat eigs')
#eigvals, eigvecs = np.linalg.eig(cur)
eigvals = np.linalg.eigvals(cur)
eigvals = np.array(list(filter(lambda x: x.real < 0.9999, eigvals))) # get rid of trivial 1+0j eigval
# display scatter plot of eigenvalues
#ax = fig.add_subplot(121)
print('plotting tmat eigs')
fig, ax = plt.subplots() #fig.add_subplot(111)
ax.set_title('Eigenvalues (tmat)')
ax.set_xlabel('Real')
ax.set_ylabel('Imaginary')
f = ax.scatter(
eigvals.real,
eigvals.imag,
marker=',',
facecolor='0',
lw=0,
s=1, # area of each plotted point
)
fig.savefig('tmat_eigs:n={}'.format(num_cells), bbox_inches='tight', dpi=600)
plt.close(fig)
def saveFFT(cur, num_cells):
ft = np.fft.fft2(cur)
#global aaa
#aaa = -1
#def ppp(x):
# global aaa
# aaa += 1
# return aaa
#ft = np.apply_along_axis(np.fft.fft, 0, cur) # just run on columns
m.imsave('ft_real:n={}'.format(num_cells), ft.real, cmap=plt.cm.gray)
m.imsave('ft_imag:n={}'.format(num_cells), ft.imag, cmap=plt.cm.gray)
print('determining 2dft eigs')
eigvals = np.linalg.eigvals(ft)
print('plotting 2dft eigs')
fig, ax = plt.subplots() #fig.add_subplot(111)
ax.set_title('Eigenvalues (FT)')
ax.set_xlabel('Real')
ax.set_ylabel('Imaginary')
f = ax.scatter(
eigvals.real,
eigvals.imag,
marker=',',
facecolor='0',
lw=0,
s=1, # area of each plotted point
)
fig.savefig('2dft_eigs:n={}'.format(num_cells), bbox_inches='tight', dpi=600)
plt.close(fig)
