Unable to convert expression into double array

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duty duty
duty duty 2020-11-23
评论： duty duty 2020-11-24
Dear all
In the code I would like to use sym function to calculate this function.But I keep getting this error.
"Unable to convert expression into double array.'
I=zeros(256,256);
syms t;
for i=1:256
for j=1:256
I(i,j)=1+cos(2*pi*(19.5+t)*i/1950/10^-4)-cos(2*pi*100*i);
end
end

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采纳的回答

Ameer Hamza
Ameer Hamza 2020-11-23
You are initializing I as double matrix, initialize it as a symbolic matrix
syms t;
I = zeros(256,256, 'like', t);
for i=1:256
for j=1:256
I(i,j)=1+cos(2*pi*(19.5+t)*i/1950/10^-4)-cos(2*pi*100*i);
end
end

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