Mathematica

Scrolling text: Changing text color, etc.
Hi: I have scrolling text in Mathematica 6.0.1, using Animate: Animate[Dynamic@ Row[RotateLeft[{C, a, l, c, u, l, u, s, " ", III, ",", " ", P, g, " ", 109, " "}, cc]], {cc, 0, 33, 1}, AnimationDirection -> Forward, AnimationRepetitions -> 2] How can I make the scrolling letters to be red, a... 26 Jan 2010 06:32

Crash when using Dot on matrices, v 6.0.2
Hi everyone, I'm using Mathematica 6.0.2 and the kernel crashes consistently when evaluating the line: Dot[SparseArray[{i_, i_} -> 1, {2, 2}], Table[Range[2], {2}]] It's just a dot product of two matrices. Anyone else getting the same problem in v.7? Maybe it's time for me to upgrade. Thanks for the help,... 24 Jan 2010 06:47

Series and passing a function a changing number of variables
Dear Friends -- 1 ----------------------------------------------- This command works fine: Series[ Exp[ x + 2 y^x ] , {x, 0, 2} , {y, 0, 2} ] this one doesn't: Series[ Exp[ x + 2 y^x ] , {{x, 0, 2}, {y, 0, 2}} ] It returns: "Series specification is not a list with three elements ..." -- 2 ----... 24 Jan 2010 06:47

BezierCurve vs. BezierFunction
I am a total beginner with splines. Playing around BSplines and Bezier curves, I noticed that while BSplineCurve and BSplineFunction seemed to agree in all the examples I tried, there are differences between the output of BezierCurve and BezierFunction. For example, the next two graphs are different: pts = {{0... 22 Jan 2010 06:11

*newbie* output of ScalarTripleProduct
I'm (almost) new to mathematica ... I coped this from some tutorial ... Needs["VectorAnalysis`"] r1 = {1, -3, 2} r2 = {3, 7,-5} r3 = {4, 1, 6} r={x,y,z} ScalarTripleProduct[r-r1,r2-r2,r3-r1]==0 the output i get is: Out[6]= True :-( What am I missing ? Thank you ... 24 Jan 2010 06:47

Washington DC Area Mathematica Special Interest Group
Mathematica SIG (http://web.mac.com/hrbishop.pmsi/DCSIG.m/DCSIG.html) MEETING 22 January 2010, 7:30 am Science Applications International Corporation (SAIC) 8301 Greensboro Drive McLean VA Southern Corner of Westpark Drive and Greensboro Drive Agenda 1. Prepared Talks Weird Behavior of GraphicsGr... 21 Jan 2010 05:37

Text Output
Hi all, Can anyone figure out a way to put bold or italics within justified text. Below is an example of a text segment as used in my application. "Lamh Dearg Abu" should be in italics. text = Graphics[{White, Rectangle[{0, 0}, {590, 52}], Black, Inset[ TextCell[ "He said and then lifted he ... 22 Jan 2010 06:11

Astrophysical Data Selection
I have a FITS image from some satellite data, and I would like to be able to pull a rectangle around an ArrayPlot of the image to get a subset of that image. I can do this with cursors, but I would just like to be able to mousedown at a point, pull the rectangle and upon release "Take" that subset of the image ... 21 Jan 2010 05:37

FindMaximum/NMaximize vs. Excel Solver
FindMaximum/NMaximize vs. Excel Solver I am looking at a simple model that calculates the best wagers to place on a set of 20 horses, where the goal is to maximize reward vs. risk. Since the bets need to be constrained, I can't use NMaximize. The probabilities are the "real" probabilities of the horses winning; ... 26 Jan 2010 06:32

Function and object naming conventions
In the VBA-Access world, there are generally accepted sets of naming conventions for functions, variables and objects, e.g. the Leszynski naming conventions for MS-Access (and MS-SQL) and the Reddick VBA (RVBA) for VBA. Are there a similar set of generally accepted naming conventions for Mathematica scripts? I ... 24 Jan 2010 05:42