Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 0-by-0.

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Muhammad Hazrul 2020-8-26

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/584558-unable-to-perform-assignment-because-the-size-of-the-left-side-is-1-by-1-and-the-size-of-the-right-s

评论： Muhammad Hazrul 2020-9-1

if ~isempty(instrfind)
fclose(instrfind);
delete(instrfind);
end
A = zeros(64,1);
B = zeros(64,1);
C = zeros(64,1);
D = zeros(64,1);
Arduino=serial('COM3','BaudRate',9600);
fopen(Arduino);
writedata=uint16(500); %0x01F4
fwrite(Arduino,writedata,'uint16') %write datac
for i=1:64 %read 64 lines of data
A(i,:) = fscanf(Arduino,'%f');
end

Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 0-by-0.

Error in testing (line 15)

A(i,:) = fscanf(Arduino,'%f');

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采纳的回答

KSSV 2020-8-26

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/584558-unable-to-perform-assignment-because-the-size-of-the-left-side-is-1-by-1-and-the-size-of-the-right-s#answer_485018

在 MATLAB Online 中打开

Try:

count = 0 ; 
A = zeros([],1) ; 
for i=1:64 %read 64 lines of data
    temp = fscanf(Arduino,'%f') ; 
    if ~isempty(temp)
        count = count+1 ; 
        A(count,:) = temp ;
    end
end