# All Questions

63 views

### Pathological behaviour when evaluating a sum

When I declare the function $f$ as follows: f[n_] := Sum[x/Sum[Sqrt[y], {y, 1, x}], {x, 1, n}]/n the input ...
125 views

### In a manipulatable graph, display x values of all intersections with one of the lines?

I'm doing a project about Moore's law, I'm trying to create a graph that which you can manipulate, but I want the x-values of the intersections with one the lines to be displayed; how would I go about ...
177 views

### Trace of intersecting planes

I have a set of curved planes that intersect each other. I only want all the parts of all planes displayed that are above the intersecting traces. Further, I would like to highlight the intersecting ...
373 views

### Creating a C++ project with Visual Studio 2010

I am trying to create a GUI using Microsoft Visual Studio C++ 2010 by calling Mathematica in my codes. I have done everything step by step as mentioned here Then I wrote this code as mentioned in ...
1k views

### Create a torus with a hexagonal mesh for 3D-printing

I am new to Mathematica, and I'm looking for a way to create patterns on the surface of 3D objects. One thing I have not been able to do is create a hexagonal mesh on a torus. What I would like to ...
349 views

### Get tab key to indent a block of code

Is there some way I can change Mathematica keyboard behavior so I could select a block of text/code, press tab, and the selection would be indented to right? Similarly, I would like shift+tab to ...
41 views

### How do I change a ColorFunction filling to be top-down as opposed to left-right? [duplicate]

I've been stuck on a seemingly simple Graphics issue for quite a while now... I am trying to make a temperature distribution Plot that will have a colorFunction filling to show red when at a higher ...
149 views

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397 views

### How to visualize the structure of this dynamic programming code

I am studying Mr. Wizard's answer to this question which tries to identify elementary circles in a graph. That answer uses dynamic programming technique to simplify the code. The underlying guideline ...
234 views

### Animation of 2 Differential Equations - 1 Independent Variable

I have effectively 1 differential equation that had to be broken up into 2 (max number of steps reached). I have gotten the solutions for both using NDSolve and have plotted each together. Now, I am ...
493 views

### Generating a list of integers that roughly satisfy a distribution

Say I have a normal distribution, NormalDistribution[25, 7] I'd like integers from 1 to 50, not sampled at random from that distribution, but sampled in a way ...
105 views

### Zooming the interval arround $0.333\cdots$, whats wrong?

I'm trying to zoom the interval arround $0.333\cdots$ with: ...
184 views

### BarChart include multiple fields on x-axis

I want to chart data using a BarChart, the labels on the x-axis should consist of three values, however I can only use one of the values (the street name), where I would like to include the city and ...
218 views

### Probability of the sum of the largest n samples

15 numbers are randomly chosen from U(0,1), what is the probability that the sum of largest four numbers is greater than 3.5? ...
98 views

### Question about sum and list in a function

I have a list of this form: $lst =\left\{\left\{q_1,x_1,y_1,z_1\right\},\left\{q_2,x_2,y_2,z_2\right\},\text{...},\left\{q_n,x_n,y_n,z_n\right\}\right\}$ I want to use this list in the function: ...
163 views

### Check whether a working CCompiler is installed

Let me give a bit background: As many of my answers imply, I often use the auto-parallelization (meaning, that Mathematica distributes the calculation automatically over several cores when ...
402 views

### How to input formula embedded in text

I'm creating a styled notebook showing a simple theorem. I can set cell style as text or theorem or code to satisfy my requirement. But when I explain the theorem, I need to embed formula (not ...
155 views

### Deleting Vertices in GridGraph

Take a simple GridGraph: g = GridGraph[{3, 3}, VertexLabels -> "Name", ImageSize -> 150, ImagePadding -> 10] I am ...
504 views

### Fast DensityPlot

Is it possible to increase the perforamce the DensityPlot? For example, let's try to plot this "flower" ...
342 views

### Bounded Voronoi Diagram

I am trying to compute a Voronoi diagram bounded by a box. In some cases, the points used to compute the diagram form a diagram such that at least two boundary points are within the same polygon. For ...
201 views

### See Local Variable at breakpoint within MODULE?

Within the debugger, can we watch local variables within a Module? As the screenshot shows, the “i” only display its global value (12) upon a message breakpoint. Is there a way to show its local ...
583 views

### Error messages from NDSOlve

I am trying to solve a boundary value problem with NDSolve. The code is: ...
102 views

### Why is held expression evaluated?

Context: I'm studying non-linear dynamics. As part of a bigger problem, I'd like to generate lists of the form {{deq, ic1}, {deq, ic2}, ...}, where ...
104 views

207 views

### View the FullForm of ^^

Why am I unable to see the FullForm of ^^ (the shorthand notation for BaseForm)? ...
550 views

### How to plot several functions without jumping? (multiple eigenvalues of a system as functions of 2 parameters)

I've been working on this research problem for months with some success by no global/proper solution to the problem. So I have square, Hermitian matrices of various sizes ($8,20,38$ dimensions) with ...
516 views

### Histogram with a logarithmic scale for the y-axis

How can I get a histogram with a logarithmic scale only on the the y-axis? With ...