清空筛选条件
清空筛选条件

How to Stretching and shrinking a graph

50 次查看（过去 30 天）
Antonella
Antonella 2013-10-30
评论： Antonella 2013-10-30
I have the function y = sin(x) and i have to stretching the graph of it. I have also to shrinking it. How can i write this in matlab?
x = 1:.01:10; y = sin(x); for i = 1 : length(y)
how i have to continue...???
Thanks in advance!!!
  1 个评论
sixwwwwww
sixwwwwww 2013-10-30
What do you mean by stretching or shrinking? and also by the "sin" is a built-in function in MATLAB so don't use as name of your function. Do you want to input some scaling factor as input in you code and want out be scaled accordingly?

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

sixwwwwww
sixwwwwww 2013-10-30
编辑：sixwwwwww 2013-10-30
Beside the comment you can do something like this:
scaling_factor = 2; % define the scaling factor and graph will scale accordingly
x = 1:.01:10 * scaling_factor;
y = sin(x);
figure, plot(x, y), title(strcat('Scaling factor = ', num2str(scaling_factor)))
I hope it helps. Good luck!
Wayne King
Wayne King 2013-10-30
You can simply dilate the independent variable in the function
x = 0:0.01:10;
y = sin(x);
y2 = sin(x/2);
plot(x,y); hold on;
plot(x,y2,'r')
To shrink the function:
y3 = sin(2*x);
plot(x,y3,'k')

类别

在 Help Center 和 File Exchange 中查找有关 2-D and 3-D Plots 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by