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

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8
votes
2answers
302 views

How to draw the image of a circle under the action of a transformation of the phase flow?

How to draw the image of a circle $x^2+(y-1)^2<1/4$ under the action of a transformation of the phase flow for the equation $\dot{x}=y,\ \dot{y}=-\sin x$? Here $\dot{x}$ means $dx/dt$. Any help or ...
8
votes
1answer
320 views

I want to update a financial chart when I select a new stock from a popup menu

I have the following code: Read all the DOW jones financial instruments instruments = FinancialData["^DJI", "Members"] Then I create a dynamic variable called ...
8
votes
1answer
515 views

Generating dynamic Inputfields

I want to create a bunch of input fields, four in this case, one for each element of the list "x", but since Dynamic has ...
8
votes
5answers
570 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 ...
8
votes
1answer
613 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 ...
8
votes
1answer
94 views

How can I defer the loading of a PopupView control until it is used?

Background: I have several PopupViews of which the loadtime adds to the startup time of a program. To improve the perceived performance I want to defer the loading ...
8
votes
1answer
171 views

Using GraphHighlight interactively

I want to build a small GUI, where the user can select either a single edge or a single node of a graph. I got to this point: ...
8
votes
2answers
310 views

Strange behavior of CreateDialog's WindowSize option

Compare the two dialog windows, created by the same code except in the first WindowSize has a value while I omit it in the second one. Note, that ...
8
votes
1answer
366 views

Way to find color at a point in a Graphics?

I need to figure out a way to find out the RGB color value at a certain coordinate in a Graphics object. The Graphics object I am dealing with is continually Dynamically updated, so it is made of ...
8
votes
2answers
612 views

What causes Manipulate to stop evaluating expressions?

I'm working on a N-body simulation within Mathematica, and currently I have something along these lines: ...
8
votes
0answers
257 views

Minesweeper beta:How to Dynamic a lot of graphics with high-speed

Recently I want to write a game,Minesweeper.Here is my completed code. ...
7
votes
3answers
204 views

Using a Slider2D to add data points to a list

This bit of code sets up a list with the first entry already in it -- {{1,1}}: ...
7
votes
3answers
259 views

Wrapping EventHandler by Table

I am making a grid on the screen. The grid is composed of different expressions. I want all of them to have a Gray background, which turns into a ...
7
votes
3answers
206 views

Problem with CurrentValue[“MouseOver”] when graphics are wrapped with Deploy

Please take a look at following toy example: ...
7
votes
2answers
299 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. ...
7
votes
2answers
231 views

Moving controls from Manipulate to a Palette ( or similar GUI object )

Consider the following snippet as a reference. ...
7
votes
2answers
406 views

Detecting double click events

Is there a way to detect double click events? I did not find anything on the doc page of EventHandler. Use case: I want to re-implement the ...
7
votes
3answers
499 views

How to use custom Dynamic inside Manipulate

I was wondering if it is possible to use a custom Dynamic[var, function] inside a Manipulate. The reason for the need is this: ...
7
votes
1answer
323 views

Oval or Bunimovich stadium

The dynamic billiard demonstration, that can be found on wolfram demonstrations (here), is only designed for an ellipsoid-shape boundary(snapshot below). The idea is to have a dynamic billiard with ...
7
votes
1answer
190 views

Asking for input in an event handler

Why won't EventHandler["text", {"MouseClicked" :> (output = Input[];)}] work? When I click "text" the kernel hangs.
7
votes
1answer
440 views

Want Interactive PlotRange of Graphics[{}]

I am trying to do: ...
7
votes
3answers
562 views

What is the right way to construct DynamicModule

When I'm creating DynamicModules for CDF purposes I'm usualy basing on my experience with that, particular goal and content rather than on deep insight. I want to ...
7
votes
2answers
176 views

Is it possible to make a variable wrapped in Dynamic non-dynamic?

If I have a function call wrapped in Dynamic can I make one or more of the parameters in the call non-dynamic? i.e. I would like to make ...
7
votes
1answer
154 views

Momentary Checkbox

I'm trying to create a demonstration in Mathematica where a checkbox will show an answer, but I only want the answer to be shown while the mouse button is pressed. There seems to be a ...
7
votes
1answer
234 views

Why do Tooltips slow down Dynamic so much? Is there a faster alternative?

I'm working on a Dynamic ListPlot with a few thousand plots, and it seems that wrapping the points with Tooltip slows the Dynamic responsiveness substantially. With the simple example below, dragging ...
7
votes
1answer
199 views

Prevent interdependence of controls

My question is probably best illustrated with this small sample code: ...
7
votes
1answer
235 views

Why is the Locator snapping back to the original coordinates? How can I prevent this?

Take the following code: p = {3, 3}; Graphics[Circle[{5, 5}, 5], Epilog -> Dynamic@Locator[Dynamic[p]], Axes -> True, GridLines -> {{3}, {3}}] ...
7
votes
2answers
174 views

Dynamically transform one Graphics to another

I would like to have two Graphics objects displayed side by side such that: they are mirror images of each other if I change the left-hand one interactively using ...
7
votes
1answer
282 views

How to make dynamic input fields work with drag & drop

I have an application using InputField to allow a user to dynamically update a data structure. In some cases the user will want to remove a string from one field ...
7
votes
1answer
382 views

How to create a multi-selectable setterbar with colored buttons

Background: consider the following code-snippet. ...
7
votes
1answer
191 views

How can I have interruptible computations inside a manipulate?

Here's a perfect example of my problem: Manipulate[Pause[n], {n, {1, 10}, ContinuousAction -> False}, SynchronousUpdating -> False] It is illustrated by ...
7
votes
1answer
159 views

Asynchronous evaluation on EventHandler

How can I make this progress bar appears when I press Enter? The Button Evaluate works just fine, but when Enter is pressed it jumps the progress bar. It would be ...
7
votes
1answer
389 views

Locking a value when Manipulating variables

I'm trying to achieve something similar to Bret Victor's brilliant Scrubbing Calculator in Mathematica. By using Manipulate I'd like to change the values of the variables such that if I modify one ...
7
votes
1answer
205 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 ...
6
votes
3answers
338 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 ...
6
votes
2answers
753 views

Formatted text in a Dynamic or Manipulate control

I am using a Manipulate control to show different calculations for the same user-specified parameters. I would like to show the results for the calculation the ...
6
votes
2answers
350 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 ...
6
votes
3answers
366 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 ...
6
votes
2answers
460 views

How can I make a list animation of images that fade in and out?

I'm not sure how to get a "fade in" effect.
6
votes
3answers
219 views

Displaying a locator that moves smoothly and updates some dynamic variables

I want to select a point on a graph and display a function of the coordinates value. Asking here a related question I learned to use Setting. Consider the example, where I display the coordinate ...
6
votes
2answers
140 views

Why the Mouse dragging response not as smooth as Locator

I am experimenting to use MouseDragged eventhandler to change the vertices positions of a triangle, it works, but not as smooth as using Locators. Is this the ...
6
votes
2answers
290 views

Creating a list of PopupMenus that dynamically update an element in a list

So as the title says I am trying to make a list where each element is determined by a users choice of an element in a PopupMenu. My first attempt: ...
6
votes
2answers
246 views

Manipulators and Dynamic in more concise code

Is there a way to update dynamic variables through a function. I was looking back at one of the answers from Heike where she showed me how to make my custom ...
6
votes
2answers
283 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
3answers
317 views

Question about modifying a Slider2D control

Background: I want to develop a custom control, based on a 2D slider. I currently have this ( working ) example. ...
6
votes
1answer
218 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 ...
6
votes
1answer
323 views

Efficient dynamic drawing

So for example I have this code: ...
6
votes
1answer
344 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: ...
6
votes
1answer
99 views

Can a field be used for both input and output (example: exchange rate calculator)

Suppose I want to build a simple currency converter like this one: The functionality is straightforward: enter an amount in any field box, it gets converted into other currencies whose fields are ...
6
votes
1answer
65 views

Bug with Initialization in DynamicModule?

In exploring Tracking Initialization, I came across this. The following usually shows a value for x of 300000 to ...