How to plot for this code?

2 次查看(过去 30 天)
soe min aung
soe min aung 2021-2-21
clc
clear all
close all
syms k1 k2
eta0 = 1; % Maximum displacement(m)
L = 100; % Propagate length (km)
W = 100; % Source width (km)
v = 0.14; % Ruptuer velocity to obtain maximum surface amplitude(km/s)
h = 2; % Water depth (km)
g = 0.0098; % Acceleration due to gravity (km/s^2)
t1 = 50/v; % (s)
t = (t1); % (s)
k = sqrt(k1.^2+k2.^2);
w = sqrt(g.*k.*tanh(k.*h));
A = ((sin(w*t))./(w.*cosh(k*h))).*((eta0*v)./(2*L));
B = (1-exp(-1i*100*k1))/(1i*k1);
C = ((exp(-1i*100*k1))./(1-((50*k1)./pi).^2)).*(1i*k1).*((50./pi).^2).*((exp(1i*100*k1))-1);
D = (exp(1i*150*k2)-exp(1i*50*k2))./(1i*k2);
E = (1./(1-(((100*k2)./pi).^2))).*(1i*k2).*((100./pi)^2).*(exp(1i*50*k2)+exp(1i*150*k2));
F = (4*sin(50*k2))./k2;
G = (exp(-1i*50*k2)-exp(-1i*150*k2))./(1i*k2);
H = (1./(1-(((100*k2)./pi).^2))).*(1i*k2).*((100./pi).^2).*(exp(-1i*150*k2)+exp(-1i*50*k2));
K1 = 0:100;
K2 = -150:150;
for x1 = 1:101;
for x2 = 1:301;
k1 = K1(x1);
k2 = K2(x2);
if (k==0)
eta_(x1,x2)= 200*eta0*v*t;
else
if (k1 == 0)
eta_(x1,x2)= (A.*(100-C)).*((D-E)+F+(G-H));
else
eta_(x1,x2)= (A.*(B-C)).*((D-E)+F+(G-H));
end
if (k2 == 0)
eta_(x1,x2)= (A.*(B-C)).*((100-E)+200+(100-H));
else
eta_(x1,x2)= (A.*(B-C)).*((D-E)+F+(G-H));
end
end
end
end
ETA = ifft2(eta_)
X = abs(ifft2(ETA,K1,K2));
X = ifftshift(X);
F = [-K1/2:K1/2-1]/K1;
plot(F,X)

回答(1 个)

Image Analyst
Image Analyst 2021-2-21
Since youi're calline fft2(), you're dealing with images not 1-D signals. So call imshow() instead of plot(), unless you want to display some cross sections (profiles) through the image.

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by