plot in different ranges for x

i want to plot a function say sin(x) for the interval 0:30 and then i want to continue this plot for some other function say ax+b (a,b are constants) for the interval 30:40,how can a manage this plot and also x-axis. Thanks

Answer 1

[Image Analyst]

Here's one way. Just make up each and stitch together:

x1 = linspace(0, 30, 100);
y1 = sin(x1);
x2 = linspace(30, 40, 30);
a = .15;
b = -5;
y2 = a*x2 + b;
x = [x1, x2];
y = [y1, y2];
plot(x, y, 'bo-');
grid on;
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);

[Image Analyst]

Of course you could also just plot x1,y1 and then call hold on and then plot x2,y2 separately.

[Muhammad Usman]

Thankyou so very much

[Image Analyst]

You're welcome. Thanks for accepting. If the ranges of the two y's are very much different , then you can also use plotyy() which will give each curve it's own independent Y axis (one on each side of the graph).

[Muhammad Usman]

yes i got help about plotyy() in documentation but you solved my issue

Answer 2

[solov andrei]

thanks