mathematica-frontend

问题 I was amazed when I found that Mathematica gives True for the following code (on 32 bit Windows XP with Mathematica 8.0.1): Rasterize[Graphics[{RGBColor[0, 0, 0], Disk[]}]] === Rasterize[Graphics[{RGBColor[0, 0, 1/257], Disk[]}]] What is the minimal difference in RGB color values which Mathematica renders and exports as different colors? Is it machine-dependent? 回答1: I believe this behaviour is machine dependent, but I do not know how exactly it depends on the OS. On my machine, it evaluates

问题 By default pressing Alt + . or calling Abort[] within the evaluation causes abort of the currently evaluating input. But when working in the FrontEnd we usually send to the kernel a sequence of inputs. For example, if we type the following three expressions on separate lines in one Cell and then press Shift + Enter we get infinite evaluation: f := CheckAbort[Pause[.1], Abort[]] While[True, f] While[True, f] While[True, f] To stop this infinite evaluation we must to press Alt + . three times.

问题 TLDR : How do I get CapsLock to translate to "ShortNameDelimiter" in Mma 7? I like pretty text in my mma notebooks, and often define functions as f[\[Alpha]_] =... so as to match the exact equation that I'm working with. As such, it involves a lot of Esc - letter - Esc sequences, and reaching for Esc every other stroke breaks my flow of typing. Now, the CapsLock key is seldom used (I can't remember the last time I needed it), but conveniently placed (your pinky is right there!). Remapping it

问题 I still know nothing on usage of such command-line options of MathKernel as -lmverbose -run cmd -password "pw" -pwfile "file" How are they working and what they are needed for? Are there other potentially useful command-line options of the MathKernel and the FrontEnd? P.S. Related answer. 回答1: Please consult the following reference pages: MathKernel and Mathematica. Opening "More Information" section you will see documented options. Its says -pwfile "file" ------- read passwords from file

问题 Good day, This question comes from the question on aborting evaluation of the full sequence of inputs. I think it is probably possible to achieve the desired behavior by redefining FrontEndEventActions for two events: "EvaluateCells" (or pressing Shift + Enter ) and for pressing Alt + . . It should be something like: SetOptions[$FrontEndSession, FrontEndEventActions -> {"EvaluateCells" :> Last$PreRead, {{"Alt", "."} :> AbortAllNextInputs}}] or SetOptions[$FrontEndSession, FrontEndEventActions

问题 EDIT: Just a confirmation whether you can reproduce this or not would be useful. Only a single computer is needed to try this (no remote connection necessary). Update It seems other can't reproduce this on Mac or Win7, so it's either WinXP-specific or specific to my machine. At this point I'm giving up. It would be good to have a tutorial on how the Front End and the Kernel communicate, so we can debug remote kernel issues. Any such general answers (or links to tutorials elsewhere) are most

问题 I have a Mathematica expression generated by another program, which I would like to open in a notebook, properly formatted. For instance, the other program generates this: Plot[{Exp[x],Interpolation[Table[{k/5,Exp[(k-1/2)/5]},{k,0,5}], InterpolationOrder->0][x]},{x,0,1},Filling->{1->{{2},{Yellow,Orange}}}, PlotLabel->Style["Formatting",Blue,FontFamily->"Courier"]] The text is written into a file, crudely suffixed ".nb", and launched, and the expression opens in a notebook without formatting.

问题 I have a Mathematica expression generated by another program, which I would like to open in a notebook, properly formatted. For instance, the other program generates this: Plot[{Exp[x],Interpolation[Table[{k/5,Exp[(k-1/2)/5]},{k,0,5}], InterpolationOrder->0][x]},{x,0,1},Filling->{1->{{2},{Yellow,Orange}}}, PlotLabel->Style["Formatting",Blue,FontFamily->"Courier"]] The text is written into a file, crudely suffixed ".nb", and launched, and the expression opens in a notebook without formatting.

问题 I tried to follow the directions on autonumbering cells in a Mathematica-8 notebook, here http://reference.wolfram.com/mathematica/tutorial/AutomaticNumbering.html I created a tiny notebook with four text cells foo qux blancmange bar Placing the cursor just before foo , I then used the Insert menu, Automatic numbering item, giving me the Create Automatic Numbering Object dialog box. I chose in the Counter dropdown then item Text , clicked This counter object radio button, and Huzzah! got the

问题 Is there a way to start up a mathematica front end (GUI) from a (Windows) command prompt and have it eval a notebook without further user action? even though mathematica.exe takes the -run and -initfile options they dont work the same as they do with math.exe. (-run ''<<file.m'' wants to open a file named ''<<file.m'' for example) Thanks. The first answer looks promising, however I get FrontEndObject::notavail A front end is not available (per docs it is "UseFrontEnd" by the way.) Perhaps a