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Hello

When I execute my code, the error message keeps popping up, "Multiple left-hand sides must be separated by commas" .

I don't know what to do to fix it.

I really thank you for your help!

for i = 1:10

EP(1,:)=EP1;

while abs(EP(i+1,:)-EP(i,:)) > 0.1 ; %[m]

t0(1) = ice;

for j = 1:4

a(j) = EP(i,1) - s(j,1); % X_total - X_satellite

b(j) = EP(i,2) - s(j,2); % Y_total - Y_satellite

c(j) = EP(i,3) - s(j,3); % Z_total - Z_satellite

R_t(j) = sqrt(a(j)^2+b(j)^2+c(j)^2); % R_total

PSR(j) = R_t(j) + c*t0(i);

end

Mat1(i) = [[a b c]./R_t c];

Mat2(i) = [PSR-R_t];

[dx(i); dy(i); dz(i); t0(i)] = inv(Mat1(i))*Mat2(i);

EP(i+1,1) = EP(i,1) + dx(i);

EP(i+1,2) = EP(i,2) + dy(i);

EP(i+1,3) = EP(i,3) + dz(i);

t0(i+1) = t0(i);

end

Walter Roberson
on 18 Sep 2020

[dx(i); dy(i); dz(i); t0(i)] = inv(Mat1(i))*Mat2(i);

You need to use comma instead of semicolon there.

But it is not going work. You need to assign the result to a variable and then index the variable to pull out parts to assign to those variables.

You are also going to need to start using cell arrays for Mat1 and Mat2

Is there a reason that you are storing the Mat1 and Mat2 results? You do not appear to be using them after the loop.

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