Dr. belisarius
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 Oct 8 reviewed Close Prevent Plus from reordering terms by default? Oct 8 reviewed Close How to determine the redundant equation in the set of DE? Oct 8 revised Cloud cover fraction edited tags; edited tags Oct 8 comment Partitioning Table @ciao Could you post that as an answer or vote to close?. Otherwise this will be kept on the unanswered queue Oct 8 awarded Enlightened Oct 8 comment “renormalising” a list Take a look at GatherBy[ ] Oct 8 comment How to determine the redundant equation in the set of DE? Well, you need as many equations as functions and making sure that all functions are used in the subset. Of course not every subset will present the same difficulty ... Oct 8 comment Construct a master curve from data Instead of trying to calculate the shifts based on sol[master]=0 you may set sol[1]=0 and afterwards add the data11 offset to all of them. By doing that you don't need two sol[ x_ /; cond] := ... conditions but just one-for all. Oct 8 comment How to plot relation in mathematica? Welcome to Mathematica.SE! I suggest the following: 0) Browse the common pitfalls question 1) As you receive help, try to give it too, by answering questions in your area of expertise. 2) Read the faq! 3) When you see good questions and answers, vote them up by clicking the gray triangles, because the credibility of the system is based on the reputation gained by users sharing their knowledge. Also, please remember to accept the answer, if any, that solves your problem, by clicking the checkmark sign! Oct 8 comment How to plot relation in mathematica? Please try to learn at least enough of Mathematica syntax to post your formulas in the language. Also, please learn how to vote (see the following comment) Oct 8 reviewed Close SetOption for plotting Oct 8 reviewed Close Easier way to save images? Oct 8 reviewed Close Problem with NIntegrate and FindFit Oct 8 comment Grouping the list of numbers that have common. @user3002626 Please remember to accept one answer (no matter if it takes you a few days, but please don't leave the question "orphan") Oct 8 awarded Nice Answer Oct 8 awarded Enlightened Oct 8 revised A list of alternating interval between its components deleted 58 characters in body; edited title Oct 8 awarded Nice Answer Oct 8 comment Programming a 2D random walk From the help data2d = RandomFunction[RandomWalkProcess[0.5], {0, 10^3}, 2]; Graphics[Line[Transpose@data2d["States"]], AspectRatio -> Automatic] Oct 8 awarded Nice Answer