Exchanging data from data acquisition listener to GUI

2 次查看（过去 30 天）
Rajeev Yadav
Rajeev Yadav 2014-3-31
评论： Rajeev Yadav 2014-4-1
I am trying to create a buffer to store data between each listener call (when data is available)via a GUI. Could you give some idea as to how to achieve it?
I tried global variables, storing the data in handles but it doesn't work.
Thanks RY

请先登录，再回答此问题。

回答（1 个）

Joseph Cheng
Joseph Cheng 2014-3-31
When you try to store the data in handles did you update the handles object with:
guidata(hObject, handles);
  1 个评论
Rajeev Yadav
Rajeev Yadav 2014-4-1
Thanks Joe, I understand your point. The problem is not that simple. I am already invoking the DAQ session via a button event. The DAQ allows to call a listener when a set number of samples are available for processing. I can use the listener to plot and store to file. The code snippet is as below:
lh = s.addlistener('DataAvailable', @(src, event) plotData(src, event, fidData, handles));
s.NotifyWhenDataAvailableExceeds = str2double(get(handles.tNumSample, 'string'));
s.startBackground();
My problem is to access data from one listner call to another.
Thanks RY

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 National Instruments Frame Grabbers 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by