Matlab crashes but Octave doesn't
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Douglas Brenner
il 2 Gen 2019
Risposto: Douglas Brenner
il 2 Gen 2019
The program below runs in Octave but crashes Matlab 2014. Mathworks won't help because my contract has run out. Any ideas would be helpful.
X = [1 , 2 ,3 , 4 ,5];
Y = [1,4,9,4, 1];
xdata = X(:);
A = [xdata.^2, xdata, ones(size(xdata))]
b = log(Y(:));
x = A\b
mu = -x(2)/x(1)/2;
sigma = sqrt( -1/2/x(1) );
A0 = exp(x(3)+mu^2/(2*sigma^2));
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John D'Errico
il 2 Gen 2019
Essentially, it means you can't use MATLAB for this, at least a too old release on a too new computer. I'm actually surprised MATLAB even started up. Complain to your institution (as if that will help.) But you can try. Argue that as new students enter the system, they are bringing in new (current) computers.
Walter Roberson
il 2 Gen 2019
Apple made changes to MacOS that prevent older versions of MATLAB from running. (See my previous remarks about external interfaces...)
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James Tursa
il 2 Gen 2019
What happens if you do the A\b differently? E.g., doing the LU decomposition manually and then backsolving yourself? Or doing pinv(A)*b?
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Image Analyst
il 2 Gen 2019
If you need it in MATLAB, then pay the money and upgrade. It doesn't crash for me on R2018b. It gives:
A =
1 1 1
4 2 1
9 3 1
16 4 1
25 5 1
x =
-0.511931276922301
3.07158766153381
-2.58955627854091
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