Mathematica

Shadow error when trying to use ParallelTable
Hi Everyone, I am trying to accelerate some code using ParallelTable, but when I do , I get the following error message: list::shdw: Symbol list appears in multiple contexts {Parallel`Preferences`,Global`}; definitions in context Parallel`Preferences` may shadow or be shadowed by other definitions. >> -----... 17 Feb 2010 08:50

Polar coordinates - ReplaceAll issue
Hi, this is my first post to this group. Yes, I'm a newbie in Mathematica. I'm trying to compute the probability of circular disc (in R^2). Suppose that vertical and horizontal deviations from the center of the disc follows bivariate normal distribution. I hope that the code below is self explained. The main iss... 15 Feb 2010 06:30

.eps file in MATHEMATICA
On Dec 22 2009, 4:05 am, Andong He <h...(a)math.psu.edu> wrote: I created an .eps plot using MATHEMATICA, and wanna add it into my .pdf file. The plot has a rigion filled using command "RegionPlot" in MATHEMATICA. The picture looks fine in MATHEMATICA and PHOTOSHOP, but when I insert into a .tex file and generate a .p... 14 Feb 2010 06:17

When can Mathematica have a decent Find dialogue?
I don't know how many times I have muttered under my breath that someone should complain about the lousy Find in Mathematica... but now finally I have decided to take some action for the greater good of all. First, instead of like the Find in other math softwares I use, Mathematica requires I hit three (actually ... 17 Feb 2010 00:07

Line into Image
Good Evening: I have a PNG image from a chart (curves), and i need to insert into it two lines of cyan color. These lines have to be moved into the PNG using two Sliders (one for the vertical line, and other for the horizontal line). I created the Slider using the "Control" function, because provide me the opt... 14 Feb 2010 06:17

Find-Replace using an evaluated expression
Hello mathGroup: I have a program that has a23 in many places. I want to change the notebook so each occurrence has an evaluated form of "Subscript[\ [Alpha], 23]". When I run the Edit>>Find command in the front-end, the unevaluated form is replaced. The "Replace with:" box is a plain text control so I cannot... 17 Feb 2010 00:07

Can I set Page Setup scale for a notebook programmatically?
I generate a notebook from a first notebook using: CreateDocument[ { ExpressionCell[ ...a bunch of stuff...], PageBreakBelow -> True, PageBreakWithin -> False], Panel[ ...a bunch of stuff... ] }] For this particular notebook, when I want to print it or save it to a pdf file the Pa... 13 Feb 2010 06:02

second , third and fourth derivatives of a
f[x_] = a*x^3 + b*x^2 + c*x + d; coef = Solve[{f[x0] == y0, f'[x0] == y0p, f[x1] == y1, f[x2] == y2}, {a, b, c, d}] // Simplify; {f''[x3], f'''[x3], f''''[x3]} /. coef Bob Hanlon ---- barefoot gigantor <barefoot1980(a)gmail.com> wrote: ============= How can I do this with Mathematica? su... 12 Feb 2010 07:47

second , third and fourth derivatives of a function
How can I do this with Mathematica? suppose we know the following for a function x0 and f(x0) x0 and f ' (x0) (first derivative at x0) x1 and f(x1) x2 and f(x2) how can we approximate second, third and fourth derivatives of f(x) for example say at a point x3. ... 12 Feb 2010 05:28

ListVectorPlot scaling
I am using ListVectorPlot in version 7 to produce a sequence of vector field plots as the field data changes with time. I would like the vectors in all the plots of the sequence to be drawn at the same absolute scale - that is, NOT normalizing the scale of each plot based on its longest vector. Is there a way to s... 12 Feb 2010 05:28