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Mathematica 10.0 Windows 7, 64-bit, 2 CPUs

Mathematica graphics


Apr
5
revised Better method for creating a tuple out of two lists
deleted 7 characters in body; edited tags
Apr
4
comment Is it possible to lower the bitwidth of (floating point) numbers?
@Daniel Thanks for the input! My question was intentionally left general to focus on number representations instead of other tricks of handling huge data. I think looking for solutions of "how to treat enormous matrices in memory?" would require a different question, at least I don't dare to modify my Q in this direction. In a nutshell however, my problem involves the calculation of the eigenvector corresponding to the largest eigenvalue. But again, this is just one particular problem, and I think this Q now has an answer (even if it is negative).
Apr
4
comment Is it possible to lower the bitwidth of (floating point) numbers?
@andre It seems to me that Integers are also represented on 64 bits on my machine.
Apr
4
comment Is it possible to lower the bitwidth of (floating point) numbers?
@Stefan Any change to SetPrecision practicly applies a tenfold increase in bytes... I should have said "lower" instead of "change" at the first place :)
Apr
4
revised Is it possible to lower the bitwidth of (floating point) numbers?
edited title
Apr
4
comment Is it possible to lower the bitwidth of (floating point) numbers?
@Leonid Yes, I am aware of that, but still I wonder if it is possible to represent my data on less then the standard amount of memory. Or should I switch to C (or similar) if I want half precision...
Apr
4
asked Is it possible to lower the bitwidth of (floating point) numbers?
Apr
4
answered Prevent Mathematica to automatically evaluate Manipulate at start
Apr
3
comment Why modules with no variables?
@Rojo: Sure, but if it comes to grouping the sky is the limit (for highest possible AbsoluteTiming) :)
Apr
3
comment Why modules with no variables?
@Rojo Also f6[x_]:={x^2;x^3;}, and the f7overlySuperfluous:=DynamicModule[{},x^2;x^3;].
Apr
3
comment Printing a Dynamic variable inside Dynamic
@Albert As a side-question, do you happen to know why Dynamic[Print["x"]] prints to the Messages notebook and how to change the target of evaluation to the actual notebook the code is written?
Apr
3
awarded  Nice Answer
Apr
3
comment Emulating a button push or a mouse click with Mathematica code
@Daroslav I've manufactured another way to set up a listener. Please check whether it fits your needs.
Apr
3
revised Emulating a button push or a mouse click with Mathematica code
added 954 characters in body
Apr
3
comment Accessing list elements by name
@ahhh No problem, and welcome to the site!
Apr
3
answered Accessing list elements by name
Apr
3
revised How to manipulate 2D plots?
Minor bugfixes
Apr
3
comment Can the elements of a list always be sorted into a canonical order?
@belisarius ... or perhaps by ObscureOrderedQ[{#1, #2}, Method -> "RosicrucianFuzzy", "SortHebrewChars" -> No!, "ConfuseUserFurther" -> True]&. And no one will ever know.
Apr
3
comment Can the elements of a list always be sorted into a canonical order?
@belisarius I would say since in Mathematica anything can be a list-element, Intersection must deal with general lists, which implies that its sorting function should be one that can sort any expression type. And since canonical sorting is such (and I don't think any other sorting is used generally in Mathematica) I would presume Intersection uses canonical sorting. To prove it would require someone to test all the specifications of the standard order linked by andre above. So in short: no, I don't know how to quickly test Intersection's sorting order :)
Apr
3
comment Can the elements of a list always be sorted into a canonical order?
@belisarius, Aky I guess functions that implement (mathematical) set-algebra (like Intersection, Union, Complement) always sort the elements of their results. Other list manipulating functions usually don't.