15
votes
0answers
997 views

Is Mathematica v10 on the Raspberry Pi licensed for classroom use? [closed]

Now that I have v10 running on my Raspberry Pi, I'm interested in what "personal and educational use" means. As a Home user, I fully understand "personal"... but does "educational" mean that I'm free ...
2
votes
0answers
91 views

How do I use Greek characters in the WindowTitle option of CreateWindow?

I am trying to write some exercises in Greek using CreateWindow. My problem is with using Greek characters in the option ...
0
votes
1answer
136 views

Explicit, closed formula for recursive integral as a function of the recursive parameter

This is a follow-up of this question/answer. I'm working on a recursive integral more complicated than the one on the linked question, but this one can be used as an example. I would like to obtain ...
6
votes
1answer
205 views

How can multiple null terminated strings be handled in a DLL-function result?

I am trying to connect a classic System Dynamics tool (Vensim DSS) with Mathematica using a DLL that is included in Vensim DSS. Reading though the instructions on how to define DLL functions on how to ...
6
votes
2answers
132 views

Integrate perfomance

I have a notebook in Mathematica 4. I'm trying to convert it to use in Mathematica 9. One of the problem is the long computation of definite integral in the new version of Mathematica. Here's the ...
5
votes
2answers
195 views

Remove versus ClearAll

What is the difference between Remove and ClearAll? I thought that "not being recognized by Mathematica", which is the effect ...
3
votes
2answers
476 views

How can we multiply nested matrices?

If we have nested matrices, such as: $$ \begin{bmatrix} \begin{bmatrix} a_{1,1} & a_{1,2}\\ a_{2,1} & a_{2,2}\\ \end{bmatrix} \begin{bmatrix} ...
2
votes
1answer
113 views

Plotting the solution of a 2nd order equation

I have got to solve a second order equation, where the coefficient depend on the parameter $k$: $$(A_k - \omega) (D_k- \omega) - B_kC_k = 0$$ so that also the solution $\omega=\omega(k)$ will depend ...
1
vote
0answers
177 views

Plotting basin boundary

How to plot the basin boundary in Mathematica? I have been trying to do this using the system ...
7
votes
1answer
190 views

What is the principle behind Dispatch?

I want to know what Dispatch actually does to rule the list. Why is it so fast? The documentation says Dispatch generates a dispatch table which uses hash ...
0
votes
1answer
152 views

Start animation after choosing of initial values without Animate

I want to simply set some parameters with sliders and click a button to start animation. I know that I can manage this with Animate and Manipulate, but my animation is written like in this post, ...
0
votes
2answers
302 views

Best method to do a List Plot of two series with the same x-Axes [duplicate]

I want to plot two data series with the same $x$-Axes. I can use Show for this purpose, but I don't know if it is the best way, because I've to set all options two ...
2
votes
5answers
269 views

How do I find the maximum value from the given set of data?

I have a set of data like {{x1, y1},{x2, y2}, ...,{xn, yn}}. From this data can I find the value of x for which ...
0
votes
1answer
87 views

Use a pre-computed list instead of RandomInteger

I would like to replace RandomInteger[{1, 10}, {10, 10}] in the following code: ...
2
votes
1answer
104 views

Integrate and ConditionalExpression Output

I am integrating some difficult functions and using the conditional output to place bounds on parameters to ensure integrability, but it seems that not all of the conditions are being returned. The ...
4
votes
3answers
671 views

Multiple output cells

Is it possible to have multiple outputs from a single function? For example: In[1]:= x+1 x+2 Out[1]= 1+x Out[2]= 2+x has multiple outputs, how can I ...
0
votes
1answer
157 views

How to use NyquistPlot without having a transfer function model?

Could anyone tell me how to use NyquistPlot with a first argument that is not a transfer function model? The expression I'd like to pass to ...
3
votes
1answer
365 views

Combine a dynamic module with a manipulation

I would like to combine a dynamic module with a manipulation, whilst maintaining the functionality of both. I have tried things like Show and ...
0
votes
2answers
332 views

How to insert trigonometric functions into matrices' vector components? [closed]

Is it possible to insert a trigonometric function into a matrix which will be able to be used dynamically, as an element of one of the vectors of the matrix? I'm trying to perform an operation like ...
7
votes
5answers
263 views

String replacement question

If you have a string string="<ALK>ene" and I have a list alk={"meth", "eth", "prop", "but", "pent"}, what function ...
9
votes
2answers
216 views

Additive SparseArray Assembly

The goal is to assemble a SparseArray in an additive fashion. Let us assume we have a large List of indices (some will be ...
2
votes
1answer
493 views

How to insert a plot into another overlay plot

I want to insert a plot into another overlay plot. Here is my code: ...
0
votes
2answers
291 views

Conditional Table

I have following : SeedRandom[2] Table[Table[RandomInteger[100, {100, 10}][[r, s]] == x[r + s], {r, 1, 10}], {s,1,10}] How can I set condition inside Tables?Such ...
3
votes
1answer
101 views
49
votes
3answers
3k views

Is Mathematica an Implementation of the Wolfram Language?

I am trying to figure out what the announcement of the Wolfram Language means for Mathematica. Is Mathematica an implementation of the Wolfram Language, or is it something else?
1
vote
1answer
154 views

Partitioning a numerical integral: need to integrate spectra

I am trying to integrate a spectrum I obtained from a fourier transform infrared spectroscopy experiment, in order to determine the global warming potential of green house gases. In order to do this, ...
0
votes
1answer
90 views

A few specific questions on a number of plots in a do loop

I have created the picture displayed below, with the following line of code: ...
-4
votes
1answer
120 views

Programming Multipolar Expansions in Spherical Tensors

We have that a density matrix can be written in a basis of spherical tensors: $\rho =\sum _{K=0}^S\sum_{q=-K}^K \rho _{\text{Kq}}^{(S)} T_{\text{Kq}}^{(S)}$ for example for a 3x3 matrix, $S=1$, ...
2
votes
1answer
208 views

importing large data files with a constraint

As I have learned in this community, one way to import a hefty data files (e.g. millions of rows of {x1, y1} data) if you don't care about the individual elements (maybe just want to obtain some ...
0
votes
0answers
89 views

Symbolic representation of bessel series derivative

I want to get symbolic expression for BesselJ derivative, where BesselJ is represented as series: ...
2
votes
1answer
125 views

How can I plot a picture with this kind of legend?

Can "plotlegend" do that? I cannot find a proper function.
4
votes
1answer
245 views

Computing a series in terms of exponential function

Is there any way to compute the following series in terms of exponential function ? $$\sum_{k=0}^\infty Y_1(k)\;x^k$$ where $$Y_1(k) = \frac{(k - 1)!}{k!}Y_3(k - 1)$$ $$Y_2(k) = \frac{(k - ...
5
votes
2answers
232 views

Interactive grid

I would like to create an interactive grid, whereby one number from a grid is selected by the cursor ("3" in the example below), and all other numbers in the grid are highlighted that are related to ...
0
votes
2answers
184 views

Combining graphics & lists / tables

I have: created with: ...
1
vote
1answer
128 views

Explicit StreamPoint

I have trouble with getting the explicit initial StreamPoint to work. The number of streamlines are not the same as the number of initial points. What am I doing wrong? ...
3
votes
1answer
115 views

BoundedDiagram Error

Although BoundedDiagram function worked well for a small data set, I got errors in a specific case that I cannot explain. I am sorry I am pasting here a large list ...
1
vote
1answer
165 views

How can I pass in parameters for multiple controls to a function that returns a Manipulate?

For instance, I have a some "commands" that I use regularly, for example: ...
8
votes
4answers
356 views

How to make Mathematica simplify $\cos[(i + j + k)\pi]$ to $(-1)^{i+j+k}$?

We know that: $$ \cos\left[(i+j+k)\pi\right] = (-1)^{i+j+k} $$ for $i, j, k$ being positive integers. In Mathematica I've tried: ...
2
votes
1answer
225 views

Finding a Moore neighborhood connected path of bright pixels along the contour of a text character

I have a simple image, for example a blowup of a Times New Roman character like 'R' saved as a PNG. I then perform the following operations to extract a minimum representation of the contour lines ...
2
votes
2answers
158 views

How can I change mouse hover behavior for hyperlinks in a notebook?

When I create a Hyperlink to a Youtube video in a text cell the link is colored blue like it would be in a browser. However, the mouse cursor does not change when ...
1
vote
2answers
190 views

Plot the velocity

So I am trying to find the connection between Forcing Amplitude and Velocity in a differential equation (Which is the part of system of differential equations). Those system differential equations ...
0
votes
1answer
269 views

Bifurcation with a system of equations

I'm trying to plot a flip bifurcation diagram for a dynamical system of equations as follows: x'[t] == v[t] v'[t] == x[t] - A x[t]^3 + R*Cos[\[Omega]*t] - B v[t] ...
2
votes
1answer
339 views

Solving System of Inequalities Relatively

I have been trying to figure out how to solve a system of inequalities relatively. I don't care about values, I just want all possible ordering. An example system might be:$${b > r,\; p > r,\; c ...
5
votes
4answers
399 views

Reduce a huge low-rank matrix

I have a huge square matrix, with a lot of zero columns and zero rows: $m=\left( \begin{array}{ccccccccc} 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & ...
15
votes
5answers
505 views

Laplace transform of $\frac{1-\cos (t)}{t}$

In the documentation, it states that The Laplace transform of a function $f(t)$ is defined to be $\int_0^{\infty } f(t) e^{-s t} \, \mathrm{d}t$. But why can Mathematica not get the Laplace ...
0
votes
1answer
158 views

Is it possible to define a function in terms of a power series?

Is it at all possible to define a function in Mathematica in terms of a power series? For a specific example, I wish to write $x(\tau)$ as $x(\tau)=x_{0}(\tau)+\mu ...
10
votes
1answer
358 views

Wavelet transform order problem

I have a signal that I'm trying to study its time-frequency features by continuous wavelet transform. By choosing different wavelet order, I get some differences in the results. ...
7
votes
1answer
133 views

How do I create a function pointer typedef using SymbolicC

I am just getting started with the SymbolicC package, and am trying to figure out how to handle function pointer typedefs, like, say: ...
9
votes
6answers
1k views

Conditional options in Plot

I was hoping to incorporate an If function into a Plot option, as in ...
3
votes
0answers
175 views

Problem with exporting a plot with a legend to PDF

I've found a simple example that illustrates my problem: ContourPlot[x^2 - 1 == y, {x, -1, 1}, {y, -1, 1}, PlotLegends -> "Expressions"] When I try to export ...

15 30 50 per page