Data loading in MATLAB

4 次查看（过去 30 天）
Fedor Durnev
Fedor Durnev 2020-2-4
评论： Fedor Durnev 2020-2-5
Hello, I have some issues with data loading.
I have created a figure with some pushbuttons and axes.
Is it possible to load some data for plot building not simply using Y=load('my data.dat') in code?
I mean is it possible to make a button with a function which can open a window where I can choose any file which I want to load? (hope you understand what I am talking about)
Or perhaps, is it possible to make uicontrol where I can put file name and then push the button to load this data and make a plot? I tried to make something following this idea, but failed.
Thank you for help!

请先登录，再回答此问题。

采纳的回答

Benjamin Großmann
Hi,
have a look at uigetfile and uiopen which open a file selection dialog box. This should solve your issues.
Regards,
Benni
  2 个评论
Fedor Durnev
Fedor Durnev 2020-2-4
uiopen helped, but what's next? How to import this data in the right way, because I need to use it for plot building?
Fedor Durnev
Fedor Durnev 2020-2-4
What should I fix here?
I guess, something with 'load' but I don't know how
function ECGButtonPushed(src,event)
uiopen;
hold on;
Y=load("Normal ECG.dat");
LY=length(Y);
Fd=500;
T=1/Fd;
tmax=LY*T;
t=0:T:tmax-T;
for i=1:LY
Y(i)=Y((i-1)+1);
end
pos1 = [0.05 0.65 0.4 0.3];
subplot('Position',pos1)
plot(t,Y)
xlabel('time,s');
ylabel('ECG,mV');
set(gca,'XLim',[0 20]);
hold on
title('ECG')
end

请先登录，再进行评论。

更多回答（1 个）

Steven Lord
Steven Lord 2020-2-4
Loading the data could be as simple as calling load. The more challenging part is likely to be sharing this data among the various components of your UI. If you're using App Designer, see this documentation page for a description of how to share data between component callbacks. If you're using GUIDE or creating the UI programmatically, see this page instead.
  2 个评论
Fedor Durnev
Fedor Durnev 2020-2-5
Thank you for your answer!
What should I fix here? I guess, something with 'load' but I don't know how function ECGButtonPushed(src,event) uiopen; hold on; Y=load("Normal ECG.dat"); LY=length(Y); Fd=500; T=1/Fd; tmax=LY*T; t=0:T:tmax-T; for i=1:LY Y(i)=Y((i-1)+1); end pos1 = [0.05 0.65 0.4 0.3]; subplot('Position',pos1) plot(t,Y) xlabel('time,s'); ylabel('ECG,mV'); set(gca,'XLim',[0 20]); hold on title('ECG') end
Fedor Durnev
Fedor Durnev 2020-2-5
Managed to do that, many thanks!

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Migrate GUIDE Apps 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