I'm plotting ECG data and I want to resale the x and y axis so that only the first 3 seconds are showing

2 次查看（过去 30 天）
Inteeskimo
Inteeskimo 2017-11-7
回答： Star Strider 2017-11-7
I am a complete beginner so go easy on me :)
load('ecg_wavs.mat') t = linspace(1,3,length(ecg50hz)); subplot(2,1,1); plot(t, ecg50hz), grid on; title('ECG 50Hz'); subplot(2,1,2); plot(t, ecg_emg), grid on; title('ECG EMG');

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2017-11-7
First, you need to know the sampling frequency of your EKG record. You can either have that stated in the metadata of the record, or from the time vector. If you have the sampling frequency (here ‘Fs’) you can calculate the time vector as:
t = linspace(0, 1, length(ecg50hz))/Fs;
then after your plot call, add:
set(gca, 'XLim',[0 3])
If my assumptions are correct, that will give you the result you want.
NOTE — Since I don’t have your data, this is UNTESTED CODE. It should work.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Smoothing and Denoising 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