Hi y'all,
I'm trying to fit a polynomial to some data, and I keep on getting an indexing error message which makes no sense. Perhaps one of you can see the forest for the trees. Here's an example of the data:
r = 23.6406 2.8430 16.8598 1.9837 10.8369 1.2979 6.8227 1.0700 15.3950 1.8485 17.8152 2.5149 21.3562 4.4245 23.5249 2.7839 27.0158 1.6553 24.3364 3.1090 21.7304 2.3873 15.4503 1.3488 21.8857 1.9761 28.4438 8.2376 17.5644 7.2797 14.6695 4.7655 24.3061 1.9693 24.2177 3.8884 26.6174 2.3952 26.3180 8.7369 19.6436 5.7631 -4.3673 1.1343 1.9130 0.5210 9.9632 6.3485 16.6363 4.9399 14.4421 3.3374
but when I try and fit it I get an indexing error message which makes no sense:
f=fit(r(:, 1), r(:, 2),'poly2')Subscript indices must either be real positive integers or logicals.
I don't see how this can be an indexing issue, as I can index to plot the full dataset:
figure, plot(r(:, 1), r(:, 2), '.')
Any ideas? I've even re-started matlab as it does sometimes get buggy when I've had it open for a while, but no dice.
Thanks!
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