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 May 7 revised Edit a Mathematica plot in Illustrator, missing font problem added 41 characters in body May 7 answered Edit a Mathematica plot in Illustrator, missing font problem Dec 5 comment Optimization with assumptions @gwr Well, the reason why I changed the answer was also that it didn't work in my Mathematica 9.0. Although I perfectly remember it working when I wrote the original answer. Anyway, I am not sure it is an easy task to give an analytical minimization result for the case of several variables dependency, so it would not surprise me much to see it unevaluated... Dec 3 comment Optimization with assumptions @gwr You are right, thank you. I have rewritten my answer. Dec 3 revised Optimization with assumptions Rewritten the answer following the comment of gwr. Jul 29 comment Autocomplete short symbol names in non-global context Thanks for the answer, but could you please provide a working example, because my auto-completion still does not work, when I repeat what you say. Jun 13 comment Custom contour labels in ContourPlot That would be a good solution, if it worked for a general function. May 14 awarded Popular Question Apr 25 answered Solving the Helmholtz equation in polar coordinates Apr 1 comment Image processing: extracting ordered contour A good solution, thank you! Just one more question: do you see a way how to assure that all the contours are passed in the same direction: clockwise or counterclockwise? Apr 1 accepted Image processing: extracting ordered contour Mar 31 comment Image processing: extracting ordered contour @Szabolcs Agreed. The idea is that you know how the curve goes when you have the original image. And I'm thinking about a way not to lose this information. When you come to the boundary the way it is described, you have already lost it. Mar 31 comment Image processing: extracting ordered contour @Szabolcs Indeed, that is a quick solution. Using ListPlot[boundary[[FindCurvePath[boundary][[1]]]], Joined -> True] I get an ordered curve. The question remains about MorphometricComponents[]. Mar 31 revised Image processing: extracting ordered contour added 84 characters in body Mar 31 asked Image processing: extracting ordered contour Mar 31 accepted Plot with plot markers without using ListPlot Mar 31 comment Plot with plot markers without using ListPlot Thank you. Choosing this solution as the most natural one, although two others are also good. Mar 21 asked Plot with plot markers without using ListPlot Mar 3 comment Numerical Differentiation using 1500 data points @DanielLichtblau Yeah, you are write. It seems to be a mathematical artifact of converting from Sin and Cos to Exp and losing physical meaning of frequency. Still, it's a very interesting question, but suprisingly it is not discussed here. Feb 24 comment Numerical Differentiation using 1500 data points Nice answer! But could someone explain please, why the "freq" are calculated in two parts?