# Questions tagged [demonstrations]

Questions on using or viewing Wolfram Demonstrations, or on implementing functionality inspired by Demonstrations.

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### How to use Mathematica for demonstration of Analysis of Boolean functions?

I am wondering how to use Mathematica to demonstrate some concepts in Analysis of Boolean functions, e.g.: Influence Noise stability Noise operator $L_q$-norm and $L_\infty$ norm of a boolean ...
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1 vote
54 views

### Get raw data from Wolfram demonstration

I was having a look at the following Wolfram demonstration that is pertinent to my current work. Demonstration: 2D Lid-driven Stokes flow (And here is a quick report that outlines the problem and ...
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### Use the mouse to pinch the plasticine

Very roughly speaking, a topological space is a geometric object, and the homeomorphism is a continuous stretching and bending of the object into a new shape. (https://en.wikipedia.org/wiki/...
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1 vote
36 views

### Automatic import of the lexicon for the Game of Life

I am trying to import the lexicon for the Game of Life, preserving the structured information as far as possible automatically (so if the data changes a future import will update it). The text form of ...
• 2,792
107 views

### Extracting Data from a Wolfram Demonstration Plot; Creating an Position and Time Table from a Wolfram Demonstration

Is there a way to create an x coordinate and corresponding time table instead of having them automatically plotted for this wolfram demonstration https://demonstrations.wolfram.com/...
• 109
1 vote
79 views

### Creating a Tracker for a Wolfram Demonstration

I am using a Wolfram demonstration that shows Newton’s Second Law: https://demonstrations.wolfram.com/TwoMassesOnInclinedPlaneWithPulley/ I am not too familiar with creating animations and I was ...
• 109
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### Intuitive visual illustration of wrapping percolation criterion

Context: When studying percolation in finite sized systems, there exist various definitions and criteria for determining when a given system is percolating, i.e. it contains a spanning connected ...
70 views

### Mathematica demonstration for Markov convergence tracking effect on input distributions in 2D (or 3D)

Is there a mathematica demo that demonstrates the convergence of Markov chains in 2 dimensions, and possibly 3, as follows? In 2 dimensions, start with the interval determined by $x + y = 1$ for ...
• 1,596
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### Run Hungarian Maximum Matching Algorithm with own sets of vertices and show Bipartite Graph

I have come across this demonstration project from https://demonstrations.wolfram.com/TheHungarianMaximumMatchingAlgorithm/ . How can I supply my own sets of vertices as input so the algorithm can ...
• 123
1 vote
66 views

### how can i make a list for the plots on a cob web

This work book is perfect but it has no list of the plots it makes. Is there a way to copy the coordinates of the plots and paste them? link to cob web Thanks
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### Slow performance of embedding Mathematica Demonstrations in webpages [closed]

When I embed a Mathematica Demonstration in my webpage, the performance is very slow and laggy. For instance, if I follow the instruction video and embed the Radial Engine Demonstration in an HTML ...
331 views

### How to create a URL hyperlink in a Wolfram Demonstration notebook?

I am writing a demonstration notebook and am unable to create a hyperlink to a proof I'm using in the Detail section of the demonstration when I attempt to use Insert/Hyperlink. So in the Detail ...
• 2,904
1 vote
127 views

### What exactly do the tiny white squares stand for in this Wolfram Demonstration for percolation in square grid?

I haven't used Mathematica before; but I found a Wolfram Demonstration that could be relevant to my project. Could someone please explain to me the significance of the "white squares" in the square ...
1 vote
482 views

### Spherical Harmonic Plotting

I have tried to plot on the surface of a sphere the spherical harmonic functions by closely following this demonstration http://demonstrations.wolfram.com/NodalDomainsOfSphericalHarmonics/ I've ...
85 views

### Demonstration site CDF error correction question

I use Mathematica ver11. However, the following error is displayed when running Demonstration site. http://demonstrations.wolfram.com/ThreeOrthogonalProjectionsOfPolyhedra/ ...
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### Can you please help me change the demo code? I want to map a different function [closed]

Initialisation code: ...
• 3
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### How to change the code Initialization section in mathematica demonstration

I am designing a mathematica demonstration on video processing and I need to change the the code Initialization section in the demonstration to personolize it and put comments about my project. How to ...
• 1,976
1 vote
254 views

### How to save the output cell from this demonstration project as a .eps

I'm having a lot of fun playing with this cool demonstration project by Karl Scherer: http://demonstrations.wolfram.com/LineArt2/ After getting some beautiful artistic results I tried to print or ...
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### Vizualization of percolation paths

I did a simple demonstration to illustrate the percolation theory for my students. The content is a conductive square network possessing electrodes at its top and bottom edges. Some randomly chosen ...
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460 views

### Create CDF file in which the code is not included

As far as I know, the CDF can be used to distribute projects in which you can interactively evaluate the projects without need to have Mathematica. Recently I notice that the files in the ...
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572 views

### How to Use Mouse Events & EventHandler in Demonstrations

One of the primary criteria for an acceptable Demonstration is, of course, that multiple copies of the Manipulate Output Cells [MOCs] have to have independent controls and datasets: the operation of ...
1 vote
184 views

### Incompatibility between Dynamic’s second argument and Wolfram Demonstrations

A central feature of the Wolfram Demonstrations is the use of multiple instances of the Manipulate output, placed into the Thumbnail and Snapshots sections – for instance here, that are used to ...
216 views

### How to scope variables in Manipulate (for Autorun)

This question is connected with that one (and all other connected). The purpose is to make a demonstration that has a Dynamic part among controls (I'm aware that it is not recommended, but nonetheless....
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### Wolfram population density demonstration does not appear to work

I tried to do the Wolfram population density demonstration and it returned an error: ...
• 4,048
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### Program to demonstrate rotation according to quaternion values [duplicate]

On the Wolfram|Alpha website, I type quaternion(1,1,1,1) into the search field. Wolfram|Alpha shows a 3D transformation of the quaternion values representing the orientation of an object. I have 9 ...
274 views

### Tree graph showing the orbits under the Collatz map?

ReverseCollatzPaths is a nice demonstration of a radial tree graph showing the orbits under the Collatz map. However, Jason Davies gives, I think, a nicer visulalization using Python, with a ...
• 2,792
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### Demonstration Confusion

What is the proper way to open a Demonstration in Mathematica so that the code is visible and can be evaluated from the Evaluation menu, as though I had created it myself? Explanation: When I ...
• 1,240
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### Initialization with Wolfram Demonstrations

In reading a Wolfram Demonstration, I see: Here is what I would like information on: "Provide any code that must be evaluated before Manipulate. This will automatically be built into the Manipulate ...
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### Modifying generalized input so there is no default input

I'm currently working on a demonstration and attempting to utilize the Interpretation command based on the example provided in the "Generalized Input" tutorial here....
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### Substitute for 'InputField' in Wolfram Demonstration

My application relies on the ability of users to enter text, and has several settings with a huge range of potential values best entered as strings (to comply with Wolfram's admonition to "choose your ...
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### Getting code from the Wolfram Demonstrations Projects [closed]

I saw from mathematica's website, there is a fantastic project about the 2D Riemann Sum. Riemann Sums For Functions of Two Variables I want to see the similar effect in my Mathematica (with ...
• 21
786 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 step-...
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