oxyplot/oxyplot — pull request #289 by Mitch-Connor (2014-12-15 17:33:33+00:00)
Title: Issue #227 - Fixed floating point noise accumulation in axis marks

Just to recap, there were cases in which axis labels would have way too many decimal places (e.g. "0.900000000000001"). I changed the label generation code to multiply by the step size instead of repeatedly adding to avoid round-off error accumulation. I tested this against the code put up by the original bug reporter as well as some cases I was running into and it seems to fix the problem nicely.