How to plot function part by part?

1 次查看（过去 30 天）

Faris Hajdarpasic 2019-3-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/450459-how-to-plot-function-part-by-part

评论： Walter Roberson 2019-3-17

So I want to set duration of plotting y=sin(t) to 10 seconds, but to plot it part by part every 2 seconds. So that means every 2 seconds plotting should be 'updated'.

I want to see how this work with basic function, because I want to apply it on plotting graph of winsound(sound card). It will also durate 10 seconds, and I need to update it every n seconds. So it is easier for me to see how this works on simple function such as sin(t). I hope you understood what I want to do, and I would be thankful if someone could solve my problem :)

4 个评论
显示 2更早的评论隐藏 2更早的评论

Walter Roberson 2019-3-17

在 MATLAB Online 中打开

outline:

while there is more to do
addpoints(....)
pause(2)
end

Faris Hajdarpasic 2019-3-17

But my action should be 10 seconds long. Is that what I should do in this "there is more to do"? I mean if duration is 10 seconds and every 2 sec I need to display part, I should run loop five times, and every time 1/5 of length should be displayed. Thats the point. So I can make it work like this?

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Walter Roberson 2019-3-17

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/450459-how-to-plot-function-part-by-part#answer_365739

编辑：Walter Roberson 2019-3-17

在 MATLAB Online 中打开

duration = 10;
Fs = 20;   %samples per second
secs_per_plot = 2;
data = randi([-5 5], 1, duration*Fs);     %example data for illustration
t_cols = reshape((0:Fs*duration-1)/Fs, Fs*secs_per_plot, []);
data_cols = reshape(data, Fs*secs_per_plot, []);
%the work
h = animatedline();
for K = 1 : size(data_cols,2)
    addpoints(h, t_cols(:,K), data_cols(:,K));
    drawnow();
    pause(secs_per_plot);
end