2
votes
1answer
140 views

How can I place gui controls inside Grid? [duplicate]

In all my apps, I am facing a problem about placing the Gui controls inside Grid. For this purpose, I wrote three functions. The first function, ...
2
votes
2answers
406 views

How to expand a general expression in cross and dot product in Mathematica

I am looking for a way to simply the general expression in cross product and dot product with general vectors. I got a help in How do I simplify a vector expression? but soon I find that it doesn't ...
2
votes
2answers
475 views

Putting NDSolve into ParametricPlot

I am having issues using Manipulate to plot the (numeric) solution to an ODE for different parameter values. I have a code that has several stages, which seem to ...
2
votes
1answer
187 views

Extracting information from list

I have a huge list that looks like this: ...
2
votes
2answers
255 views

What is wrong with my VectorPlot?

I am trying to make a simple plot of a spherical field falling off with distance from origin: ...
2
votes
2answers
845 views

Adding contour lines to a 3D plot?

I am having trouble getting contour lines on a 3D plot (ListPlot3D). I have tried ListContourPlot3D, but that gives me a really weird looking graph with a ton of dfferent levels. What I would like is ...
2
votes
0answers
80 views

StringMatchQ error messages printed to console while main notebook is sitting idle [duplicate]

Possible Duplicate: Strange ::usage behavior in v9 I'm currently finishing up a Mathematica vector calculus package (MMA9.0 on Mac Os X), but have had a persistent problem that I haven't ...
2
votes
3answers
198 views

how can I generate a sequence of assignments?

I want to make a sequence like follows r[1]= r[2]= r[3]= r[4]= .... r[n]= The above r[i] represents coordinates which I have ...
2
votes
3answers
266 views

How do I construct a pure function to extract data fields from records that are strings?

How can I get from data segment format to the final segment format with a pure function? The data fields are fixed length. There are no separators between the fields. a) list ...
2
votes
1answer
89 views

Is it safe to change the value of $TimeZone?

I'd like to configure some of my notebooks to assume all calculations using dates, times and locations (notably AstronomicalData , but others too) take place at the ...
2
votes
2answers
1k views

How to change the base of logarithmic-scale plots?

Mathematica provides a score of convenient functions to make plots with various logarithmic scale axes, for instance I am using ListLogLinearPlot to have a discrete ...
2
votes
2answers
925 views

Why doesn't Mathematica solve $x=\cos\,x$ properly? [duplicate]

Why doesn't Mathematica solve x == Cos[x] properly? Both Solve and NSolve fail with the ...
2
votes
0answers
212 views

Best Practice for using Notation, $Pre, MakeExpression in a package

I'm setting up a package that defines a custom Notation. I'd like to inquire about best practices and possible issues of: using the Notation Package using $Pre ...
2
votes
2answers
646 views

Manipulate a Differential Equation result

I want to Manipulate the result of Differential Equation like : ...
2
votes
2answers
197 views

Evaluation of Notebook chosen by FileNameSetter

Please consider the following: I have created a GUI where I can choose the path of a notebook (which I need for later calculation) via ...
2
votes
3answers
1k views

Passing a matrix as a function argument

I am trying to do the following: ...
2
votes
1answer
323 views

Manipulating an arbitrary-precision ContourPlot

I have a function, say minimizeme[ω_][β_][ϵ_] = ϵ^2 ω-Log[2 (Cosh[2 β]+Cosh[2 β ϵ])]/(2 β); I want to make a high-precision dynamic ...
2
votes
1answer
885 views

Function output from DSolve

I want to get a function as output form DSolve. For Example : sol = DSolve[{Q''[t] + 40 Q'[t] + 625 Q[t] == 100*Cos[10*t], Q[0] == 0, Q'[0] == 0}, Q[t], t] I ...
2
votes
1answer
156 views

Server running WolframLightWeightGrid manager loses licensing information

"Once more into the breach..," I have 2 identical Xserves running OS X Server 10.6.8 each with 2 quad core Intel Xenon processors a total of 16 kernels. I have configured both servers identically ...
2
votes
1answer
349 views

Connecting to a remote machine

The simple answer is ssh username@hostname Enter your password and you are set. My problem is that I wish to connect to a computer in my university. There are ...
1
vote
1answer
100 views

Compute symbolic Expectation of a summation

I am required to computed following Expectations : $E[\displaystyle\sum\limits_{i=1}^N \frac{X_{i}}{N}] = \bar{x}_{0}$ & $E[\displaystyle(\sum\limits_{i=1}^N \frac{X_{i}}{N})^2] = ...
1
vote
1answer
89 views

Generate a set of 3D coordinates subject to constraints

Generating a set of random 3D coordinates is ok, e.g. ...
1
vote
1answer
145 views

Data filtering using Butterworth filter

I want to filter data using Butterworth filter. I am currently using Matlab and I want to know how to do it in Mathematica. I have the following data: ...
1
vote
1answer
92 views

How do I use wildcard characters with StringTake?

Say I'd like to pick substrings from some string such that these substrings have the pattern @@@q@@@, where @ is used here as a ...
1
vote
2answers
54 views

How to switch between a binary number as String and a as a list of digits?

I was trying with String Functions and I viewing any posts and have no results I want to know 1.- From cromo33 = Table[RandomInteger[], {i, 1, 33}] cromo33 ...
1
vote
2answers
156 views

MathLink Graphical Output (Plots) to File

In a custom Mathematica frontend based on MathLink I try to make use of plots produced in Notebooks. The idea is to write them to files whenever they get produced. According to C-code snippets I ...
1
vote
2answers
164 views

Can't find a fit for Erf

I have the following numbers ...
1
vote
2answers
114 views

Is it possible to monitor the sum of squared errors in a NonlinearModelFit or FindFit procedure during the process?

Since fitting procedures using NonlinearModelFit (or `FindFit) sometimes take very long, I would like to monitor the sum of squared errors during the process ...
1
vote
1answer
215 views

3D Printing in Mathematica Tutorials

Are there thorough tutorials on 3D printing for Mathematica? It seems that being able to export Mathematica files for 3D printing is unfortunately still a novelty, but it's vital for my business ...
1
vote
1answer
220 views

Detecting a nonlinear edge in a 2D point pattern

Following an earlier post here, I have generated a point pattern on the unit square $[0,1]\otimes[0,1]$, which is described by a piecewise constant intensity function constructed so that (in ...
1
vote
1answer
155 views

Overlaying a Plot within a Manipulate Control Panel

Is there a way to overlay a plot into a blank area of a Manipulate control panel, that will still update according to the controls in the Manipulate function? This is an image of what I have: You ...
1
vote
1answer
134 views

Using Manipulate with a control variable for selective recalculation

I'm trying to adapt Nasser's method for using a control variable inside Manipulate to selectively choose what part of the code should be recalculated depending on the controls changed. I've also read ...
1
vote
2answers
85 views

ListPlot : range from $0$

I want to plot values of a table for example: table = {0.456, 0.7899, 1.3456, 9.8908} But I want to Plot points (x,y) like: ...
1
vote
3answers
163 views

professionalize/optimize my code that calls a function

I have the following construction, which defines a function that I subsequently call in a loop multiple times. I use this very often, but I have never looked into if there is a more professional way ...
1
vote
1answer
173 views

How to embed a Mathematica demonstration in Google sites?

I want to have students submit articles that include Mathematica demonstration projects in a document that is on Google sites. I am having problems with embedding the JS code. Could you provide ...
1
vote
2answers
57 views

How to get monomials multiplied by each other?

Suppose Subscript[x, #] & /@ {1, 3, 7} that returns {x_1,x_3,x_7}. Now how can I get ...
1
vote
2answers
126 views

Notation for implicit derivative

Consider the following line of code: D[x == y^3 + x y, x, NonConstants -> y] The output would be: ...
1
vote
1answer
146 views

Expansion of functions in the real domain

When I try FullSimplify[FunctionExpand[x^(1/12)(1/12) LerchPhi[x,1,1/12]]] I have a nice answer with many complex numbers. Is there any way to have the ...
1
vote
1answer
130 views

Style markers in strings

I'm dealing with strings in Mathematica and I would love to handle their stylling in the most cenvenient way. Without loss of generality, let's assume I want to make some parts of string ...
1
vote
1answer
362 views

The underlying process of Integrate[] [duplicate]

Integrate[x^4 E^-x^2, {x, 0, +∞}] Output: (3 Sqrt[π])/8 Can someone explain to me the specific calculation process ?
1
vote
1answer
163 views

Rotating a a set of points in a square boxed region by $90$ degree increments [closed]

I have a set of two-dimensional points $P$ in a box with dimensions $(d_1,d_2)$. The coordinate for the lower-left-hand corner of the box is $(0,0)$ and the coordinate for the upper-right-hand corner ...
1
vote
1answer
137 views

Ways to access lists inside lists

I have gone through some reference material but I am not getting really good links that will help me grow understanding of ...
1
vote
1answer
443 views

ItoProcess function

While looking in the help manual of Mathematica concerning the ItoProcess function I found the following: ItoProcess[{a,b,c},x,t]: represents an Ito Process y(t)=c(t,x(t)), where ...
1
vote
2answers
570 views

Forecast Future Stock Prices - Brownian Motion - Again

excuse me, I think I have here a technical problem with Mathematica yesterday I posted the question with the title: Forecast Future Stock Prices - Brownian Motion I am still not very experienced but ...
1
vote
0answers
60 views

Abridging Lists of Equations within NDSolve, Manipulate [duplicate]

I have a pretty little NDSolve function that I've finally decked out with manipulatable (by sliders) coefficients, which changes the graph in real time. However, I ...
1
vote
1answer
174 views

Mismatch between Axes -> True and Frame ->True

Using Axes -> True of the following........ ...
1
vote
1answer
131 views

direct assignment to the element in a Table

I have already asked a related question here why set values in this way doesn't work? But I think I have to write the question which I encountered explicitly? ...
1
vote
1answer
105 views

SetPrecision with indexed variables

I have an expression as below: ...
1
vote
2answers
313 views

How to define a vector with automatically added symbolic elements with subscripts

I want to define a vector lets say k containing elements Symbolize[Subscript[k, 1]], k2, k3 ... etc. When I define lets say k4 . I want the symbol automatically added to vector k. Something like ...
1
vote
0answers
229 views

Data structure for a list of actions

The idea: I need to generate a sequence of events then run a "propagator" over the list of events where the "propagator" will update the state of the following event. I can then write functions that ...

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