More changes #33
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It seems in previous numpy versions the index was allowed to be of type float. This is not the case anymore and we need to explicitly cast to int.
Float has only a limited accuracy, and this can lead to ind being n in some cases. Doing the module later in integer space avoids this issue, although theoretically an overflow could happen. However, in that case the accuracy is probably very poor.
They are, sorted fastes to slow: * _fast: extremly fast, but works only for sufficiently circular shapes * _convex_hull: still very fast, but can fail on beans, if the bean is very thin. Requires shapely * _alphashape: reasonably fast. So far worked for all tested cases. Should be much faster then lines_from_points(). Requires shapely and alphashape * _two_opt: Should find very good solutions, but is very slow. Mostly here so that I do not add it again, because I forgot that it is very slow.
Mostly for generating plots for a paper. It should probably not be used in practice ...
J is likely (a bit) wrong, as it misses the By/Bxyz correction for g22
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