Hi, I don't know why the mailing list formatted my email in that way! It has added line breaks where there should not be any. Here is another attempt:
I use the parameter TwoPunctures::TP_epsilon = 1e-6 to ensure that the NaN never appears, no matter where I place the BHs. This replaces a denominator sqrt (pow (r2_plus, 2)) with sqrt (pow (r2_plus, 2) + pow (TP_epsilon, 4)) See https://bitbucket.org/einsteintoolkit/einsteininitialdata/src/master/TwoPunctures/src/Equations.c#lines-91 so adds a fixed source of error to your evolution, but the effect of this is negligible. -- Ian Hinder Research Software Engineer University of Manchester, UK
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