Mathematica

FrontEnd and bash automatization
Dear group, I have a large collection of notebooks I want to run in Mathematica FrontEnd authomatically. math < in > out solution is not applicable, because Notebooks contains commands like NotebookCreate[], etc.. I tried JLink solution, something like Needs["JLink`"]; $FrontEndLaunchCommand="mathematica -m... 9 May 2010 08:53

3D imaging
hello group, what is the best way to generate the 3D image or 3D graphics from a 3D matrix. below img is the matrix would like to see in the same sense that ArrayPlot[img[[4, All, All]], ColorFunction -> GrayLevel] will give me the 4th-slide 2D image; or Image[img[[4,All,All]]] best regards, Eric img = Table... 6 May 2010 05:16

NDSolve backward in time
Hi, It is a common strategy to integrate an ode with time flowing in the opposite direction, to get an idea of possible unstable equilibria. Does anyone know how to ask NDSolve to integrate "backward" in time? Thanks, Bruno ... 7 May 2010 06:42

Scoping with Module
Hi, I cannot explain the following behaviour of Module. Maybe someone else can: in the global scope f[t_] = t; DownValues[f] results in {HoldPattern[f[t_]] :> t} as expected. Simply wrapping it with Module, without making f lokal does not change this behaviour. Module[{}, f[t_] = t; DownVal... 12 May 2010 08:02

DistributeDefinitions statement appears to create memory leak
Hi everyone, Has anyone ever seen a DistributeDefinitions statement lead to run-away memory consumption? I am using the following command: DistributeDefinitions[y,z]; inside a module. y is a variable with 2384 items, consuming 104856 bytes & z is a variable with 2184 items consuming 429344 bytes. ... 6 May 2010 05:16

A question about saving figures from Mathematica 7
Dear Sir, I have a question about saving figures from Mathematica 7. *My question:* * * I want to save a figure in TIFF format with different resolutions. Can I know how to do this and from any options? I need your support as soon as possible Thanks in advance Marwa ... 6 May 2010 05:16

Parallelize NonlinearModelFit
Hello everyone, I am running Windows XP 32bit with Mathematica 7.0.1 on a dual core machine (2X 3.0GHz Pentium D) with 2 gigs of RAM. I have 4 data sets of spectroscopic data (intensity vs. frequency data with 1340 data points each) that I am fitting simultaneously with shared parameters as well as paramete... 6 May 2010 05:16

Plot this?
I am new to Mathematica and going at snail's pace. I would like to plot: 8x - x^2 + 14y - y^2 = 49 Anyone? -- Trevor Rabey ... 9 May 2010 08:53

FortranForm
I have two, possibly related, questions on the FortranForm command. 1. Is it possible to get Fortran 90/95 style output? In particular, I'd like to have long lines broken up with the end of line & character, rather than the sixth column indicator as it is now. 2. Is it possible to get it to output decimals w... 5 May 2010 07:07

How to manipulate ODE via EventLocator?
Dear Group, is there a way to manipulate a set of ordinary diff.equations during NDSolve-runtime, via the EventLocator option? I would like to see for example that when a specific variable x reaches a certain value at time t, e.g. x[t] = 10, then its value should be reset to 1 and the integration should continue... 3 May 2010 08:43