Questions relating to the dynamic family of functions in Mathematica, such as Dynamic, DynamicModule and Manipulate.

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11
votes
1answer
1k views

How to work around Mathematica hanging when showing a large SparseArray?

Note: This is fixed in 9.0.1. In Mathematica 9, if I display any large SparseArray object in the default way (which looks something like ...
8
votes
5answers
587 views

How to save Manipulate bookmarks permanently?

I would like to save current Manipulate parameter values to load them again later. Bookmarks (previously discussed here and here) work fine until the cell is ...
-2
votes
1answer
266 views

How to extract value from dynamic list? [duplicate]

Possible Duplicate: How to extract the numerical value of a dynamical variable Dynamic wraps a list that I cannot extract values from I want to extract value from list dynamically,this is ...
3
votes
2answers
201 views

How can I align the labels of the buttons on a setter bar to the button centers?

I tried to align the labels on the buttons of a SetterBarto the button centers. This is my code: ...
16
votes
3answers
388 views

Creating a notebook that has cells of a certain style password protected

I am teaching students how to use Mathematica. I want to create a problem set that has cells with a certain style (probably Input or some new style that is a variant of Input) locked down so that the ...
16
votes
0answers
478 views

How to improve these WASD + mouse look 3D controls?

Insipred by this question and the corresponding answer I've written a code for full-screen exploration of 3D scenes using standard WASD and mouse look controls. Here it is. ...
0
votes
0answers
151 views

Using Control Objects with TabView [duplicate]

I have a number of different tabs on my 'dashboard'. Each tab has a few different Controls (drop down boxes) that the user makes selections with. These selections determine what is displayed on the ...
5
votes
1answer
186 views

Why does Dynamic output cause CPU usage when onscreen?

I write such a line in Mathematica: {Slider[Dynamic[s]], Dynamic[f[x_] := s*x]} After evaluation, the CPU immediately runs at full power. And if you scroll the ...
9
votes
5answers
466 views

Manipulate Exp[I θ]+b Exp[-I θ]

I've uploaded an image showing a demonstration I'd like to create, but I definitely need help. There is a lot of talent on this list, so maybe someone can help me get started learning how to add ...
2
votes
1answer
247 views

Dynamically updating interactive objects in Mathematica

Is it possible to create interactive code in Mathematica (via EventHandler[] or Manipulate[] perhaps) that continually updates some calculation based on external data in the time when no user input is ...
5
votes
2answers
416 views

Interactively select a row/column of a Grid

I need a simple way to display tabular data (preferably with Grid) and also be able to select a row or column of the table. I've tried different approaches, but I ...
4
votes
1answer
197 views

Dynamically link cell content in Mathematica?

Is it possible to dynamically link the content of two cells? For example, can I set up a Notebook with two text cells that display the same value, and if the user types in one the other updates, etc.? ...
18
votes
1answer
209 views

“With” as part of the “Dynamic Interactivity Language”

I noticed that in Mathematica's Function Navigator With is listed as being part of the "Dynamic Interactivity Language". It is not the first (or even the fourth, ...
30
votes
9answers
8k views

How to create animated snowfall?

Well, the title is self-explanatory. What sorts of snowfall can we generate using Mathematica? There are two options I suggest to consider: 1) Continuous GIF animations with smallest possible number ...
2
votes
1answer
95 views

How do I make an EventHandler non-responsive to MouseMoved after a mouse click?

Consider the following code. After evaluating it, when I move the mouse over the output text, it prints 1, and when I click the mouse on ...
30
votes
1answer
351 views

Quickly look-up usages, options and attributes of symbols

When I'm writing code in the front-end, I find myself very often looking up the list of options of a symbol over and over again in the documentation center. In most cases you find there a list of ...
1
vote
2answers
253 views

How to make a Tooltip display dynamic based on a parameter value?

If k=3, then I would like the following to say "Sine Curve, k=3" when you hover over the output of the Tooltip command: ...
2
votes
3answers
159 views

How to change FieldSize to be the same as dropdown menu width in PopupMenu?

I've tried the following code to change the FieldSize but I can't make it equal the actual value of MenuSize and I tried to ...
1
vote
2answers
137 views

How to edit InputField while using EventHandler?

I try to edit InputField while using EventHandler's MouseClicked, but the ...
7
votes
2answers
308 views

How to efficiently get the value from form UI built with dynamic InputField

Here is the code that I used to make a tabular UI. ...
22
votes
3answers
937 views

Does Mathematica have a built-in date picker?

Does Mathematica have an interactive date input control that lets the user choose a date by browsing to a calendar view and returning the selected date as a date list? For example, something like the ...
1
vote
1answer
142 views

Changing the number of locators with SetterBar

Typically when adding locators I would use a button i.e. something along the lines ...
13
votes
1answer
237 views

Why does a variable become real when using the second argument of Dynamic?

Version 9, on Windows 7. Please compare these 2 very simple examples Manipulate[ x, Row[{Manipulator[Dynamic[x], {0, 10, 1/100}]}], {{x, 1}, None} ] and ...
4
votes
2answers
176 views

How to execute a function each time the slider is dragged?

I've created a function f and a slider: Slider[Dynamic[y],{1,4}] How to execute/call f ...
2
votes
1answer
167 views

How to control dependent PopupMenus?

I created three interdependent PopupMenus with names demographic, region and ...
6
votes
3answers
342 views

Simple blink comparator for two images

I tried to build a simple 'blink comparator' - where you can click on an image repeatedly to switch between two similar images. (An old-fashioned notion in the days of powerful image processing ...
7
votes
1answer
206 views

Can I select or implement a Manipulate bookmark from an arbitrary control?

I understand how I can select a bookmark from the "+" menu of a Manipulate. Is there a way to select a bookmark from an arbitrary control, or define a control that ...
4
votes
1answer
301 views

Execute code when file is modified

I have a function the takes some time to complete. The function imports data from a .csv, parses it, and plots certain vectors from there. The .csv is constantly being updated from an external ...
4
votes
4answers
147 views

Make a slider controlling a generated character's code value

If I execute the following code: char = 97; Slider[Dynamic@ToExpression@FromCharacterCode@char, {0, 5}] the slider will fail to change the value of ...
21
votes
2answers
854 views

Why animator smoothes dynamic updates, or how to make pacman drink beer

How could I make a pacman drink beer in Mathematica? This is what I have so far ...
6
votes
1answer
224 views

Dialog inside Dynamic Module

The following doesn't appear to work: DynamicModule[{}, Button["Press Me", ChoiceDialog["OK or Cancel?"]]] When I press the button labelled "Press Me", a dialog ...
9
votes
2answers
289 views

Localizing variables within a Manipulate

I have a notebook with several examples of very similar computations, each involving the same variable/parameter names of the ingredients used in a final ...
5
votes
1answer
385 views

Progress indicator with shared variables

I'm trying to create a custom progress indicator for a parallelized computation, using Dynamic and SetSharedVariables to display ...
13
votes
2answers
930 views

How to extract the numerical value of a dynamical variable

I want to inspect interactively an image by selecting points by the mouse pointer. This is easily done by LocatorPane - here is a simplified example: ...
4
votes
3answers
210 views

How can I create a custom control which evaluates to a list of values or replacements?

I have a set of variables which are used in various places in my calculations (solving a system, initial conditions, etc.). In order to make this easier to deal with, I want to make a control-like ...
4
votes
1answer
233 views

Cannot calculate with Dynamic variables in a grid

This is a prototype of a grading scheme. In reality it is bigger. The 10 pts in initPtsPartA comes from the school. The output cell should be deployed as a CDF ...
10
votes
2answers
299 views

Mathematica Typing Effect

Here is a Typing Effect in javascript. I could only implement a very simple one: ...
6
votes
3answers
375 views

Locators in Manipulate not moving properly

I thought a simple Mathematica kerning machine (for adjusting the space between characters) would be interesting, but I'm having trouble with the locators. (There are a number of other questions ...
10
votes
2answers
308 views

Dependent Manipulate sliders

I would like to use dependent sliders in Manipulate. First slider K0 should be independent and varied from ...
2
votes
2answers
163 views

Updating a tracked symbol inside Refresh?

I have some code inside a Manipulate, whose goal is to allow the user to edit the upper half of the matrix while keeping it symmetric at all time. The minimal code ...
3
votes
1answer
189 views

Having Dynamic evaluated when off screen

As the title says, I want a cell containing the dynamic solution of a DAE-System to be available over the whole document. I use a lot of different Plots and Sliders scattered over the document and it ...
2
votes
2answers
736 views

Manipulating PlotRange

Currently, I am working with some dynamic simulations of mechanical/electrical systems (in this case a kitchen scale). The main simulation is running smoothly but while building a nice GUI around the ...
10
votes
2answers
207 views

What is the point of Refresh if Dynamic has an UpdateInterval option?

I haven't found an example where I can't get rid of Refresh[]: ...
2
votes
2answers
129 views

How to display only a certain part of the content in a Panel?

I have a Panel of size {850, 400} as myPanel with a Pane of size {450, 400} and four images ...
6
votes
1answer
356 views

Using more than one set of Locators in a Manipulate

I need to add locators dynamically to different sets. With one set this works OK: ...
3
votes
1answer
161 views

How can I allow a user to input a list using parentheses and convert this to Mathematica notation dynamically?

I have the following dynamic module. It works. The problem is that whenever I try to make the variable list or the variable s dynamic the code doesn't work. My goal is to allow students to enter a ...
8
votes
1answer
625 views

Prevent PopupWindow from opening multiple windows

PopupWindow objects can be clicked multiple times, opening multiple popup windows for the same object. How can I prevent this? A bit more detail: I have an ...
0
votes
0answers
68 views

How to create a dynamically self-updating table of content for a notebook? [duplicate]

Possible Duplicate: Generating a table of contents How to create a dynamically self-updating table of content for a notebook? The TOC should contain the titles for the section, subsection, ...
6
votes
2answers
288 views

A good way to manage code in a complicated CDF?

When doing complicated programming in a Mma notebook I define several functions that I use in my higher level funtions, and I use a "Subsection" cell for each definition. For example I might write: ...
6
votes
2answers
369 views

A command for outputting a list of parameter values in a Manipulate interface

I am looking for a command that will output a list of values that correspond to the current parameter values manually set on a particular Manipulate interface. For ...