Can someone help me? Am getting the following error.

Error using vertcat Dimensions of matrices being concatenated are not consistent. Error in GUI>pushbutton1_Callback (line 144)

part of the code: while(i<=numberOfDatas)

    q = fscanf(s, '%f');
    Tdata=[Tdata(2:end), q];                                %Get the data from the serial object

    set(M,'Zdata',[Tdata; zeroIndex],'Cdata',[Tdata; Tdata]);
    drawnow;

    c=round(clock);
    data_sensor{1,1}=strcat(num2str(c(4)),...
            ':',num2str(c(5)),':',num2str(c(6)));           %Current Time no. data conversion to string for Excel export
    data_sensor{1,2}=q;                              
    d=[d; data_sensor];                                     %Append new data to previous data matrix
    i=i+1;                                                  %Increment the counter 
end

        if true
          % code
        end

[Rik]

The answer is in the error text: you are concatenating several variables in this code snippet, and one of those don't fit. Use the debugger to stop on error (you can type dbstop if error to enable it). Then you can see the sizes of the arrays you're trying to concatenate and see how those don't fit. Then you can modify your code accordingly.

[John Amakali]

I tried but i couldnt , can i send you my whole code then you see where i went wrong.

Answer 1

[KSSV]

YOu cannot append two arrays with different dimensions....check below:

[rand(1,3) rand(4,1)]    % it throws error. 

[rand(1,3) rand(1,4)]    % no error 

[rand(3,1) ; rand(4,1)]  % no error

You check for such a situation in your code.

[John Amakali]

line 144 = set(M,'Zdata',[Tdata; zeroIndex],'Cdata',[Tdata; Tdata]);

they are first pointing at that line.

Answer 2

[John Amakali]

Can you please help me.. how about you just go through my code and see where i went wrong.

[Dennis]

d=[d; data_sensor];  %does not work 
d=[d;data_sensor{1,1}] %would work
d=[d;data_sensor{1,1};data_sensor{1,2}] %would work

[John Amakali]

line 144 = set(M,'Zdata',[Tdata; zeroIndex],'Cdata',[Tdata; Tdata]);

they are first pointing at that line.

[Dennis]

I do not know what size Tdata or zeroIndex have. I could guess that they do not have the same length so [Tdata;zeroIndex] throws out an error. But without information about Tdata,q and zeroIndex its just a guess.

Answer 3

[John Amakali]

am actually collecting a sample of data=500 please the full function of the temperature button.

%%TEMPRATURE % --- Executes on button press in pushbutton1.%%TEMPRATURE function pushbutton1_Callback(hObject, eventdata, handles)

s = serial('COM5'); %create serial object set(s,'BaudRate', 9600); %set baud rate set(s,'DataBits', 8); set(s,'StopBits', 1); fopen(s); %open port for communication s.ReadAsyncMode = 'continuous'; %enable continuous data read operation fwrite(s,'T'); %transmit 'T' to receive temperature

% Various variables numberOfDatas = 500; %no of sensor data to be ploted Temp = zeros(1, numberOfDatas); %array of zeroes i = 1;

%-------Excel File Declarations %delete 'xbee1.xlsx'; %delete previous file filename='C:\Users\John N A\Documents'; %create new file sheet=1; %excel sheet no cell_ascii=66; %excel cell Alphabet ASCII 66='B'

readasync(s); %synchronous reading

%Data Plot Specifications h=figure(1); if(~exist('myAxes','var')) %cheak if declaration already exists buf_len=500; %no. plots to be shown at a time on display index=1:buf_len; zeroIndex=zeros(size(index)); %array of zeroes Tdata=zeroIndex; limits=[15 50]; %colorbar range

    myAxes = axes('XLim',[0 buf_len],'Ylim',[0 0.1],'ZLim',limits,'CLim',limits);
    view(0,0);                                              %Rotation and height of plot             
    grid on;                                                    
    M=surface(index,[0,0],[Tdata; zeroIndex],[Tdata; Tdata]);%surface plot specs

    set(M,'EdgeColor','flat','FaceColor','flat', 'parent',myAxes)
    colorbar
    title('Real-Time Temp Readings, \circC');               %plot title 
    xlabel('Samples');                                          
    zlabel('Temprature (\circC)');
    set(h,'Position',[200 200 890 660]);                    %plot position on screen    
    drawnow;                                                %force matlab to draw
end

d=cell(1,2); %data matrix dimension declaration d{1,1}='Time'; d{1,2}='Temprature';

while(i<=numberOfDatas)

    q = fscanf(s, '%f');
    Tdata=[Tdata(2:end), q];                                %Get the data from the serial object

    set(M,'Zdata',[Tdata; zeroIndex],'Cdata',[Tdata; Tdata]);

    drawnow;

    c=round(clock);
    data_sensor{1,1}=strcat(num2str(c(4)),...
            ':',num2str(c(5)),':',num2str(c(6)));           %Current Time no. data conversion to string for Excel export
    data_sensor{1,2}=q;                              
    d=[d; data_sensor];                                     %Append new data to previous data matrix
    i=i+1;                                                  %Increment the counter 
end

xlRange = sprintf('%c%i',cell_ascii,2); %excel range xlswrite(filename,d,sheet,xlRange); %command to write data to excel cell_ascii=cell_ascii+2; %increment cell accii for humidity plot clear d; %clear data register after logging

stopasync(s); %stop sync for serial object fclose(s); %close COM port delete(s); %delete Serial object clear s;

see where you can help me please