0
votes
1answer
41 views

Trying to get the values of sliders from a module

I generated n number of Sliders using the idea from Manipulate with a variable number of sliders But I need the updated values of these sliders to use to evaluate ...
6
votes
0answers
507 views

Wavelet Transform Modulus Maxima (WTMM) method

Has anyone already coded the Wavelet Transform Modulus Maxima (WTMM) method for computing the singular spectrum using multi fractal formalism in Mathematica? The goal is to analyse 1D, 2D and 3D data....
0
votes
1answer
62 views

How to combine Nest and list Part

I have a list $L$ of Length $n\geq6$ and a function $f$ that, when applied to $L$, generates $n-5$ lists $\mathscr{L}_i$ of Length $n-1$ (at the outermost level). I ...
0
votes
1answer
33 views

How can I plot the graph based on time from TimeUsed?

Good day everyone, Can anyone help me how to plot the result using time from computer. Here, I used timeUSed to generate the time; ...
1
vote
2answers
220 views

planar Conic Sections plot

Among answers of ConicsAssemblyQuery, I posted images that are not pretty. In particular, the parabola is elusive due to large parameter step. Please help. The program attempts to translate and ...
3
votes
1answer
93 views

Why does RegionUnion fail for these Regions?

Bug introduced in V10.0 and persisting through 10.4.1. Introduction Lately, I asked for a solution to inflate and unite a List of BoundaryMeshRegions: Inflate ...
4
votes
1answer
115 views

What's reliable way of finding declared but undefined functions/symbols in several interrelated packages?

I have many packages some of which use some of others. I have many symbols defined in them. Is there a reliable way of finding declared/exported but undefined functions/symbols in several ...
7
votes
3answers
93 views

Transformation rule for arbitrary number of argument expressions

I am failing to write a Mathematica transformation rule that replaces e.g. f[a + 3, b + 3, c + 3] with f[a, b, c] + 3 for an ...
30
votes
2answers
2k views

Trying to visualize the Collatz conjecture

I happen to have this collatz collatz[x_, y_] := If[x == 3*y || x == 2*y + 1 || y == 3*x || y == 2*x + 2, 2, 0] So i want a visual 3D adjacency graph of my ...
15
votes
0answers
80 views

What has changed in pattern matching functions with the Orderless attribute?

In making an attempt to answer this question, we ran into a version-dependent pattern-matching issue. An extended discussion in the comments transpired, and some inconsistencies arose. Consider the ...
20
votes
3answers
563 views

Can Mathematica produce manipulatable 3D plots for deployment on the web?

I have a 3D plot I produced in Mathematica and I would like to share it with the world in a way that allows my audience to rotate it and interact with it in the broadest possible way. I would like ...
1
vote
0answers
26 views

Filling between two plots up to some boundaries only [duplicate]

Suppose I have plotted two functions $f(x)$ and $g(x)$ on the same plot. I would like to shade the area between the two curves only when $f(x) \geq g(x)$, but I cannot get the Filling command to do ...
5
votes
1answer
54 views

Using Interval Slider in Manipulate for Plot Functionality

I am trying to incorporate Interval Sliders in Manipulate to allow the user to select a range to view a given plot. Here is an example that I have constructed for ...
4
votes
3answers
71 views

Using a function from inside a module [duplicate]

I try to plot a function for special values of some parameters which I don't want to set globally: ...
0
votes
0answers
53 views
0
votes
1answer
34 views

Max iterations for NestWhileList [on hold]

I'm writing Turing machines with a halting state. Many of these tms will never reach the halt state and I want a way to tweak NestWhileList so it runs a max of $n$ ...
2
votes
2answers
59 views

Translation especially in graphics

By running the following code: ...
0
votes
0answers
35 views

Create n number of sliders with push of a button

I am trying to create an app and a part of it I want to plot 2D slices of n dimensional data. For that purpose I ask the user which plane he/she wants to use and change the other dimensions with a ...
0
votes
0answers
46 views

Mathematica, stop sorting my output! [on hold]

I'm trying to get some output from Mathematica / WolframAlpha, but it's coming out in a useless format. Mathematica is, for some reason, sorting my output. Below is the output from my function and ...
1
vote
0answers
61 views

Complex function plot issue [on hold]

I am plotting the real part of a simple complex function defined in two equivalent ways, and the plots do not agree. ...
1
vote
0answers
33 views

\$MinNumber vs. \$MinMachineNumber [on hold]

I'm working on some code that is giving me a division by 0 error, but I don't think I'm dividing by any functions that could come out to be 0. At one point it was suggested that this could be caused ...
4
votes
0answers
56 views

Does Mathematica have built-in support for multivariate regression?

I know that LinearModelFit can generate a model of a single response variable as a function of a set in input variables. Does Mathematica provide support for ...
3
votes
2answers
254 views

Building a Career Ladder Lattice (Follow up)

I want to thank you both for your help above. I'm going to abandon my quest for a number to label substitution using VertexRenderingFunction; because I need the ...
0
votes
1answer
33 views

Is it possible to get same answer from NonlinearModelFit with and without errors on data? - How to insert errors in NonlinearModelFit?

I want to use NonlinearModelFit with the following data. I tried it firstly without inserting any error bar. ...
2
votes
1answer
25 views

How does AdjacencyLists work on SparseArray

I have been working with large SparseArray and have noticed the properties are very very useful and fast. I wanted to manipulate my large sparse array in ways similar to the properties. Looking at the ...
0
votes
0answers
18 views

Wolfram Development Platform won't show my files

I just logged into Wolfram Cloud, so far I had no problems using it. But now, with this error when I try to open the home directory: What could be the problem? I don't have access to any of my ...
3
votes
4answers
321 views

How to solve an equation with a nested function

I have the equation f[f[x]] == 28 + 9 x How can I solve this for f[x]? I note that this post relates to the topic, but ...
2
votes
2answers
224 views

Define PolyLog so that positive reals evaluate on upper edge of branch cut

Generalizing the previous question: Define Log so that negative reals evaluate on lower edge of branch For real positive values $x>1$, Mathematica's polylogarithm function ...
0
votes
0answers
35 views

What is wrong with my formulas for a mathematical model of a double pendulum? [on hold]

I wanted to create a computer simulation on Matlab, using a model for a pendulum from this study (A double pendulum model of tennis strokes. Rod Cross. Uni of Sydney, 2006) - Link I wanted to use the ...
5
votes
1answer
81 views

single slit diffraction numerical simulation

I'm trying to simulate the Fraunhoffer diffraction at slits(single,double,triple) with Mathematica. In the picture, the red one is analytical result and the green one is numerical result. The ...
0
votes
0answers
16 views

Problem in plotting [on hold]

What is wrong with Plot3D[Sin[x y], {x, -2, 2}, {y, -2, 2}, PlotPoints -> 30, Mesh -> True, ]; It is almost the same as here (on page $15$) with the exception that I erased the last line ...
0
votes
0answers
27 views

Evaluating Elliptic Sine function

I am new to mathematica. I want to evaluate the elliptic sine function(se_r): http://mathworld.wolfram.com/EllipticSine.html The straightforward way of doing it would be using it's definition ...
0
votes
0answers
26 views

Filtering bad urls from a list of image urls [on hold]

I have about 90k image urls and I'd like to Select only the ones that are real images. Map[Check[Import[#], Nothing] &, urls] would take about 6 hours. Any ...
0
votes
3answers
117 views

how to change the name of exporting file automatically

I want to export some sort of data from Mathematica to .txt files but every time with a different name.clearly I want the name of files change automatically in each loop for each series of data that ...
9
votes
3answers
1k views

Increase 3D Graph thickness for 3D printing in Mathematica?

My code: Plot3D[{(2*x*y)/(x^2 + y^2)}, {x, -2, 2}, {y, -2, 2}] Output: And now I can export this to STL by using the export STL command, however, when I try ...
0
votes
0answers
20 views

Why isn't this minimize function returning the optimal answer? [on hold]

I am trying to minimize the following equation by solving for s1, s2, s3, s4 (where s1+s2+s3+s4=20, and they should be positive integers) ...
2
votes
0answers
54 views

Interpolating functions and NDSolve

I've been working on trying to get Mathematica to solve this system for a while now, and I have a couple of questions relating to various parts of the system: Interpolating functions: As a number of ...
0
votes
2answers
34 views

If/else conditional in Mathematica

I am a beginner in Mathematica. How can I turn the following Matlab commands into Mathematica commands. ...
2
votes
0answers
45 views

How to view an image from command line?

I'm running mathematica in command line mode, but I need to view a graph/image, so I'd like to open an image with an X11 window to inspect an image: Is there an easy way or built-in command to to ...
0
votes
0answers
28 views

NMaximize — Error + Output

When I run the code, Table[ NMaximize[ {f[α, χ, τ], 0 <= α <= 2 π, 0 <= χ <= π}, {α, χ}, WorkingPrecision -> 10 ], {τ, 0.1, 2, 0.1} ] ...
2
votes
0answers
48 views

Why FinancialDerivative fails for the Spread case?

According to the documentation center for FinancialDerivative in version 10.4, when there are multi assets, we still may use ...
2
votes
1answer
44 views

Interpolating functions and Look-up tables

This is just a general question about how InterpolatingFunctions work: If I have a complicated function that I don't want to have to evaluate many times over, does turning it into an ...
1
vote
1answer
114 views

efficient elementwise multiplication of SparseArray vector and matrix

I have a large SparseArray $P$ of dimensions $\{d,d\}$ and I want to multiply a vector (also a SparseArray) $v$ of length $d$ ...
0
votes
1answer
19 views

Element-wise SeriesCoefficient for matrix [duplicate]

I have a matrix expression which, when expanding with the Series[] command, returns $$\left( \begin{array}{cc} 1-\frac{1}{2}t^2+\frac{1}{8}t^4-O[t^5] & t-\...
1
vote
2answers
48 views

Merging Two Lists - Loops

I have 2 lists. For example, list1 = {{a,b}, {c, d}, {e, f}, {g, h}} list2 = {{1}, {2}, {3}, {4}} I want to merge them such that I get the result: ...
1
vote
1answer
64 views

Multiple curves plot from excel

I want to have a multiple curves plot which describes the energies of electron respect to distance. After importing data from excel, I have a table as below. The first row is the distances. Each of ...
0
votes
1answer
117 views

Solve returns empty list

I want to solve these equations but Mathematica gives no answer. ...
0
votes
0answers
31 views

Non commutative products and scalars

Say I have an expression such as $$a.(\alpha b)$$ where $a$ and $b$ are non-commutative operators, but $\alpha$ is simply a scalar. How do I tell Mathematica to treat $\alpha$ as a scalar and "pull" ...

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