每五分鐘將數據寫入文本文件Matlab

Question

假設vec_A，vec_B，vec_c是一些具有隨機數據的矩陣。我想將數據寫入到文本文件中每5分鐘，我的代碼如下：

function samplegui_OpeningFcn(hObject, ~, handles, varargin) 

handles.timer = timer(... 
     'ExecutionMode', 'fixedRate', ... % Run timer repeatedly 
     'Period', 300, ...    % Initial period. 
     'TimerFcn', {@open,hObject}); % Specify callback 

handles.output = hObject; 
handles.vec_A=[]; 
handles.vec_B=[]; 
handles.vec_C=[]; 
guidata(hObject, handles); 

function open_Callback(hObject, eventdata, handles) % push button to receive serial data. 

cnt=0; 

while 1 

     % Getting data from Serial Port 
     get_lines=fgets(handles.se) % getting data from serial port 
      if~isempty(get_lines) 
      cnt=cnt+1; 
     if strfind(get_lines,'T') %Parsing data 
     handles.vec_A=[handles.vec_A;[timet newword]]; 
     plot(handles.vec_A(:,1),handles.vec_A(:,2:end),'r'); % plotting 

     % Same follows for parsing and plot vec_B and Vec_C 
     drawnow(); % to update the Plots 
     end 
    end 
Pause(.05); 

     start(handles.timer); % saving the data 
     dlmwrite('My_sample1.txt',handles.vec_A); 
     dlmwrite('My_sample2.txt',handles.vec_B); 
     dlmwrite('My_sample3.txt',handles.vec_C); 
     stop(handles.timer); 
end 
guidata(hObject, handles); 

在運行我的代碼，會出現以下錯誤：

錯誤而定時器「定時器6評估TimerFcn '

輸入參數太多。

如何在這種情況下執行計時器以每五分鐘成功寫入數據或建議任何其他方式來執行此操作。

Answer 1

您已將TimerFcn定義爲{@open, hObject}，但您沒有名爲open的函數。相反，它試圖用三個輸入參數（定時器對象，一個事件對象和hObject）調用內置的open，並且由於open只接受一個輸入參數，所以會產生錯誤。這就是說，根本不清楚你提供的代碼將如何完成任何你想要的東西。像這樣的東西可能會更好。

function samplegui_OpeningFcn(hObject, ~, handles, varargin) 

    handles.timer = timer(... 
      'ExecutionMode', 'fixedRate', ... % Run timer repeatedly 
      'Period', 300, ...    % Initial period. 
      'TimerFcn', @(s,e)write_data()); % Specify callback 

    handles.output = hObject; 
    handles.vec_A=[]; 
    handles.vec_B=[]; 
    handles.vec_C=[]; 
    guidata(hObject, handles); 

    start(handles.timer); 

    %// Now update your data in a loop 

    cnt = 0; 

    while true 
     %// Getting data from Serial Port 
     get_lines = fgets(handles.se) 
     if ~isempty(LINES) 
      cnt = cnt + 1; 
      if strfind(LINES, 'T') 
       handles.vec_A = [handles.vec_A; [timet newword]]; 
       plot(handles.vec_A(:,1), handles.vec_A(:,2:end),'r'); 
       drawnow 
      end 
     end 
    end 

    function write_data() 
     %// Write it to file 
     dlmwrite('My_sample1.txt',handles.vec_A); 
     dlmwrite('My_sample2.txt',handles.vec_B); 
     dlmwrite('My_sample3.txt',handles.vec_C); 
    end 
end