All Questions

24 views

Upvalues and order of interpretation

I'm trying to use UpValues to improve the usability of some code, but I am running into an issue where the order of the UpValues is important, and I am not sure if it is my understanding or a ...
62 views

How to disable multiple document interface (MDI) in Mathematica 10?

I want that there was no window-in-window interface. How to disable it?
38 views

Generalized method of moments (GMM) estimation in Mathematica

As I was trying to get more help on implementing Generalized method of moments (GMM) estimation in Mathematica, I came across: Mark Fisher's Mathematica packages and notebooks If you have any useful ...
42 views

Strange wiggles on the surface of a ParametricPlot3D

I'm trying to plot two cones but when I try to display them, Mathematica (10) makes the edges wiggly. My code is: ...
30 views

Generate Degeneracies in List [duplicate]

I have a list with n entries and I would like to duplicate this list p times. In my case because of the Degeneracy of my Eigenvalues. For example I have {3,2,1} and it is five-fold-degenerate so that ...
112 views
+100

Developing a function of two variables from given data

Cross listed from MSE: http://math.stackexchange.com/questions/1029399/developing-a-function-of-two-variables-from-given-data (I believe Mathematica SE is an appropriate place to ask this, as well.) ...
132 views

How to define a nested function like this?

For example, I want to calculate the limit of $\frac{1}{1+\frac{2}{1+\frac{3}{1+\ldots}}}$. So I want to define: $f(1)=1$ $f(2)=\frac{1}{1+2}$ $f(3)=\frac{1}{1+\frac{2}{1+3}}$ Then I calculate ...
36 views

How to exclude a region from ParametricPlot

Suppose I have functions f[x] and g[x] which are defined in the region 0 ≤ x ≤ 1 and ...
388 views

How to subtract one list from another, treating each elements as distinct?

Suppose that I have a = {"A", "A", "A", "B", "B", "C"} b = {"A", "B"} How can I subtract b from ...
39 views

Table for 3D list plot

I have a function which is defined with an integral and a sum, in other words, its numerical, so i want to make a table (nxm) with the following entries: ...
34 views

Writing a script in Mathematica like .m files of Matlab [on hold]

I'm new to Mathematica, and coming with a Matlab background. It looks for me that the notebook files in Mathematica works like if Im working in thw workspace of matlab. That is, I have to write a line ...
48 views

Tooltips do not seem to work with InfiniteLine (ConicHullRegion) in 2D Graphics

The InfiniteLine functionality added to version 10 is very handy for obvious reasons, however a Tooltip added to them in ...
58 views

Expand An Image to Fill a Grid

How can I effectively expand an image to fill an entire cell area of a grid and no more? ...
40 views

I tried to install LinkSnooper on my Windows 7 computer, as described in the documentation and here. According to the answer of @Todd Gayley, I entered the following string in the field MLOpen: ...
93 views

Make a new list by filtering unwanted rows

I have a list like this. ...
34 views

How to define y[n] = f1 y[n-1] + u[n]?

I need to define a recursion defined by the following equation $y(n) = f_1 y(n-1) + u(n)$ In which $f_1$ is a symbolic constant. I know the values of the sequence u and I know the initial value of ...
61 views

How do you apply an algorithm individually to an array with many graphs

I have and array with many graphs to which I want to apply an algorithm (below) to each graph in an array that contains all my graphs. ...
67 views

Weird behaviour when using Scale, Rotate in Graphics

(Edited to simplify drawing) I have a drawing of two tangent circles: ...
52 views

Maxwell propagator problem 2D [on hold]

Hi folks Im trying to turn certain matlab code to mathematica but for some reason it doesnt really want to do it could you please assist me a bit. Thanks The matlab code is as follows: ...
117 views

What is wrong with this code?

I am plotting polar curves with PolarPlot and I tried plotting a parabola with $\frac{2}{1-\cos x}$ and $\sec x$. Obviously there are two singularities that have ...
140 views

PlotLegends won't generate automatically more than 15 labels in v10

While testing the examples from this recent post, i've noticed a problem in V.10 with PlotLegends when it has to automatically generate more than 15 labels (i.e. ...
40 views

Labels are not stored with the plot [on hold]

I apply Labeled to a plot and want to save it all with "Save Graphics as" clicking on the plot. Doing so I can only select and store the plot without the label. If ...
83 views

NDSolve and strange “nonlinear coefficients problem”

I'm stuck solving the following problem. I defined two functions as follows: $$\varphi(\lambda) = \frac{\left((\lambda-2)^2-1 \right)^2}{4}$$  \gamma(\lambda) = \varepsilon^2 ...
26 views

Wrong results from a branching function (ternary channel) [duplicate]

I'm doing one ternary channel and using the following code: ...
85 views

A counterintuitive RegionPlot behavior [on hold]

The region between a straight line and a hyperbola in the fourth quadrant is not shown by the RegionPlot: ...
78 views

Bug? Or what? Why it returns internal functions? [on hold]

Using version 10.0.1 I input: FullSimplify[(Pi^s Zeta[1 - s] Sin[(Pi s)/2] 2^(s - 1))/Zeta[s]] Mathematica returns: ...
35 views

Differentiating two tables x and y?

I have two tables x and y with x={673,674,675,...} and y={0,1,2,...} and delta=dx/dy. I would like to know how delta can be calculated knowing that delta is the derivative of x divided by the ...
91 views

I always use the PastelColor stylesheet in Mathematica 8, since I think it is comfortable to my eyes. But it can be no longer found in the Menu in Mathematica 10, ...
121 views

Obtain polygons describing all intersections of many polygons

I have 6894 polygons describing zones in a state plane (i.e., cartesian) coordinate system. Most are not very complex, and I believe none have holes. A random example is Polygon[{{351633., ...
53 views

Strange interaction between Module and ListPlot

Why is the variable a ending up assigned to {1,2,3} after executing Module[{a}, a=Range[3]; ListPlot[a] ]
65 views

How to extract matrix which produces given symbolic linear combinations?

Suppose I have a column matrix $\alpha$, consisting of some symbols ...
48 views

First::normal: Nonatomic expression expected at position 1 in First[0]. >>

I'm trying to do a numerical integration. The integration is within a function. ...
41 views

Mathematica Lattice Reduce Command

I'm going through a very old copy of "Mathematica: A System for Doing Mathematics by Computer" for self practice. I'm on chapter 3, and ran into the LatticeReduce ...
54 views

White region in ContourPlot

The following code ContourPlot[Min[(-7 + 100 t - x) (5 + 100 t - x), (400 t^2 + 40 t (-5 + x) + (-5 + x) (7 + x))], {t, 0, .05}, {x, -1, 5}, PlotRange -> All] ...
71 views

Plotting knot torus

I'd like to plot together a torus and a knot on it, that is, closed curve wrapping around the torus, $m$ times around a circle and $n$ times around the other circle. It will be used to explain ...
78 views

How to use RunProcess to import external function?

I have a functions written in an external language called GO. How can I quickly load them into the kernel for use as Mathematica functions? The two ways I've tried are with MathLink and LibraryLink ...
101 views

Understanding NestList` with multiple functions

General question For a function f[n, a], where a is a list and n is a whole number, what is ...
57 views

How does Mathematica resolve symbolic systems of inequalities?

Before getting into my (probably annoying) question, let me provide some context: I recently started using Mathematica to automatically perform stability analyses that I previously did by hand. A ...
78 views

Label rows and columns of an ArrayPlot?

Is it possible to label the rows and columns of an ArrayPlot? I have a somewhat large matrix, about 90x90. The rows and columns of this matrix have names. I want to plot this matrix using ArrayPlot, ...
72 views

Draw Multiple Polygons Given Their Vertices

Hi I have a very simple question but I haven't been able to find a set answer. How would I draw a bunch of polygons on one graph. The following does not work: ...
39 views

Wrap custom control inside Manipulate or DynamicModule

[Apologies if this is a duplicate: I have looked at quite a few related questions but have not seen this issue dealt with] I have built a custom control, using the following method: ...
58 views

31 views

Setting chartlabels in a histogram

I have two data that I use to build the following histogram code: ...
248 views

Comparison of Dispatch objects ureliable in Mathematica 10

In 2008 I wrote a group theory package. I've recently started using it again, and I found that one (at least) of my functions is broken in Mathematica 10. The problem is complicated to describe, but ...
40 views

Entering block matrices, general case doesn't work

I want to enter several matrices at different positions in blocks. There is already a very similar answer here: http://mathematica.stackexchange.com/a/3562/6138 I thought that simply generalizing ...
54 views

1/2D FDTD problem [on hold]

So I have been writing a code in order to simulate 1D initially wave propagating trough a slit and then a 2D just for completeness. Problem is the 1D version doesn't want to give me anything for some ...
21 views

Integer linear problem (ILP) example, with 3 constraints and an additional restriction? [migrated]

Say I have the following Integer Linear problem: $x_1 \geq$ 0 No. of Item A $x_2 \geq$ 0 No. of Item B $x_3 \geq$ 0 No. of Item C $x_4 \geq$ 0 No. of Item D Maximize z = ...
33 views

Minimization problem in a subset of Complex matrices

I would like to minimize $||\mathbf{A} \rho -v||$ (where $\rho , v$ are fixed vectors) with respect to the matrix $\mathbf{A}$ elements, but with $\mathbf{A}$ in a subset of complex matrices (i.e. ...