like the picture above
I'd like to synthesize two irregular waves.
What code should I use as a matlab to do that?
My english is not good sorry
MATLAB: To synthesize two irregular waves ?
graphline
Related Solutions
After seeing your clarification, I offer these two possibilities. Perhaps one of them is what you want:
clc; % Clear the command window.
close all; % Close all figures (except those of imtool.)
clear; % Erase all existing variables. Or clearvars if you want.
workspace; % Make sure the workspace panel is showing.
fontSize = 20;% Setup
n = 100;x=1:n;omega = 0.25*pi;xn = sin(omega*x);ns = sqrt(0.2)*randn(1,n);% Plot different scenarios, depending on what "combine" means.
% Plot both on same plot
% Plot with common y axis on left side
subplot(2,1,1);plot(x, ns, 'r-', 'LineWidth', 2);hold onplot(x, xn, 'b-', 'LineWidth', 2);xlabel('x', 'FontSize', fontSize);ylabel('xn, ns', 'FontSize', fontSize);title('xn and ns vs. x, one y axis', 'FontSize', fontSize);grid on;% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);% Plot each with separate y axis.
subplot(2,1,2);plot(x, ns, 'r-', 'LineWidth', 2);hold onhPlots = plotyy(x, xn, x, ns);xlabel('x', 'FontSize', fontSize);ylabel(hPlots(1), 'xn', 'FontSize', fontSize);ylabel(hPlots(2), 'ns', 'FontSize', fontSize);title('xn and ns vs. x, separate y axes', 'FontSize', fontSize);grid on;
If neither of these is what you want, then please clarify again -- there are other possibilities. See MATLAB Gallery for some of them.
Try using roots() - the function meant for doing that:
x = linspace(-6, 6, 1000);y = x.^2 + 2 * x - 10;plot(x, y, 'b-', 'LineWidth', 2);grid on;r = roots([1,2,-10])% Make black line for x axis;
yline(0, 'LineWidth', 2);% Make vertical lines at roots
xline(r(1), 'LineWidth', 2, 'Color', 'r');xline(r(2), 'LineWidth', 2, 'Color', 'r');xlabel('x', 'FontSize', 18);ylabel('t', 'FontSize', 18);caption = sprintf('Roots at %.2f and %.2f', r(1), r(2));title(caption, 'FontSize', 18);
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