Dr. belisarius
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 Apr 26 comment Scraping High-Res images from the MoMA and the Van Gogh Museum websites @Temak That is off topic here.I suggest you as for it on stackoverflow.com Apr 4 comment Calling Polymake functions from Mathematica But ... you have already received an answer for this question.May be it is not what you expected, but at least you may have linked it instead of posting this one as if it were a new thing here Apr 4 comment Calling Polymake functions from Mathematica mathematica.stackexchange.com/a/59676/193 Apr 1 comment Using a Mathematica index as a DiscreteVariable in NDSolve when solving a coupled set of ordinary differential equations @Ahmad Welcome ! 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! Apr 1 comment How to get the Perfect Maching or Near-Perfect Matching See FindIndependentEdgeSet[ ] ...it finds ONE Mar 30 comment Play the sound of $\pi$ Sound[SoundNote[#, 0.12] & /@ Accumulate@First@RealDigits[N[Pi, 10], 2]] Mar 30 comment Filling smoothed histogram with area representing standard deviation? @Zhao It is a nice trick to use when you need two different plotting styles in different regions for the same curve Mar 30 comment How to use a picture to store some data See also this mathematica.stackexchange.com/a/13170/193 Mar 30 comment List of all Variables that match an specific pattern @Fábio You may try exp /. Cos[a_] :> Cos[Collect[a, t]] /. a_ Cos[f_ + w_ t] :> {a, f, w} Mar 30 comment List of all Variables that match an specific pattern @Fábio Well, it is not possible to verify if a replacement rule works with an unknown expression ... Mar 30 comment Create a square polygon that can be used as the base of a pyramid 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! Mar 30 comment NDSolve and matrix formulation do not produce the same result. Why and which is more precise? @Jens I don't know why I never realize of all those brilliant business opportunities out there until someone else shows them to me :( Mar 30 comment ErrorListPlot ignores some exact data points Added the version-10 tag Confirmed what @JasonB said before: works OK on v9 Mar 30 comment Nested list can not be packed? @J.M. _"Packed arrays are a representation for rectangular tensors of machine integers, machine reals, and complex numbers with real and imaginary parts that are machine reals." reference.wolfram.com/mathematica/tutorial/… Mar 30 comment Filling smoothed histogram with area representing standard deviation? 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! Mar 30 comment DSolve “Equation or list of equations expected instead of True in the first \ argument ” Nevertheless the resulting expression is quite long Mar 30 comment DSolve “Equation or list of equations expected instead of True in the first \ argument ” @michael writing "try restarting mma" or similar is not more cumbersome than linking another post. And it usually needs confirmation from the OP before closing Mar 30 comment DSolve “Equation or list of equations expected instead of True in the first \ argument ” @J.M. Does it spit anything out on your machine? Mar 30 comment Creating Nested For Loops for modifying values to append to a List @MikeS Try to run it again in a fresh kernel (restart Mathematica) Mar 30 comment Polar and Parametric Plots not showing up 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!