J. M.
Reputation
56,855
146/100 score
 Apr 25 comment Getting PlotPoints value from a Plot @kglr, that's what I told Jason; the only snag in that is that it doesn't account for PlotRangePadding. Apr 25 comment Why PolarPlot can have negative $r$? @John, and I gotta say, the analytic geometry books I've seen all mention that $r$ can be negative. OTOH, they're old, and maybe the OP's newfangled books now have restrictions in place. Apr 25 comment Getting PlotPoints value from a Plot Yes, I was merely anticipating people who might ask why you didn't just extract PlotRange from the resulting Graphics[] object. Apr 25 comment Getting PlotPoints value from a Plot Did you have a look at the FullForm[] of the output of Flatten[(* stuff *)]? Apr 25 comment Getting PlotPoints value from a Plot For your perusal: TracePrint[Plot[{Sin[x], Sin[2 x], Sin[3 x]}, {x, 0, 2 π}], (MaxRecursion -> _Integer) | (PlotPoints -> _Integer), TraceInternal -> True]. You can then apply Chartingget2DPlotRange[] to the output afterwards. (N.B. PlotRange[graphics] and Chartingget2DPlotRange[graphics] will have different results in general, depending on the PlotRangePadding setting.) Apr 25 revised Finding Laplace Transform edited tags Apr 25 comment Is there a good way to schematically show that 3 vectors are perpendicular? Where's the code? Apr 24 comment How to generate higher dimensional convex hull? Consider for instance the 3D convex hull. The points are organized (alright, that may have been the more appropriate word to use) so that there is a polygon corresponding to each facet of the hull. In the 4D case, you have cells; how should the points be grouped in those individual cells? Or will you be satisfied with a routine that returns just the coordinates of the corners? Apr 24 comment How to generate higher dimensional convex hull? Let's restrict ourselves to the 4D case, for simplicity. How do you expect the points making up the corners of your convex hull to be arranged? Apr 24 revised How to generate higher dimensional convex hull? edited tags Apr 24 revised What would be the most efficient way of finding the first repeated term in Sylvester's sequence modulo the $n$th prime? edited tags Apr 24 reviewed Leave Open What do the lines in a ContourPlot Mean? Apr 24 reviewed Leave Open Using ValueQ to test whether “hash” key exists fails when key is given as variable Apr 24 reviewed Leave Open How to select very small components in an image Apr 24 reviewed Reject and Edit How to fill in an irregular border of an image Apr 24 revised How to fill in an irregular border of an image deleted 48 characters in body Apr 24 answered Are there any code which just derivative of piecewise function(same distence)? Apr 24 revised Find the number of $n$ such that $n!$ is a sum of three squares deleted 19 characters in body Apr 24 revised Find the number of $n$ such that $n!$ is a sum of three squares rolled back to a previous revision Apr 24 comment Solving coupled differential equations with unknown constants What happens when you feed them into DSolve[]?