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

learn more… | top users | synonyms

19
votes
1answer
564 views

How can I effectively performance-profile Dynamics?

How to optimize performance-wise a complex dynamic expression (like a GUI) with lots of dynamically updated components, which require different update-frequencies? I was hesitant to ask this question ...
10
votes
2answers
284 views

Two-sided slider getting stuck

I'm implementing a two-sided slider to be able to set upper and lower bound in just one slider: The problem is that it can get stuck when both locators are at the far left: And I'm unable to ...
6
votes
2answers
503 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
2answers
191 views

How to access off-cell mouse position inside an EventHandler?

Consider the following example. First, I print the dynamically updated value of the actual position of the mouse, then I print pt, which is the same but is only ...
4
votes
2answers
435 views

How can one popup menu be used to add another?

I'm trying to construct a GUI that changes depending on what's chosen in certain popup menu's. For example: The default state of the menu is condition one, but when the first PopupMenu is selected ...
4
votes
1answer
270 views

Evaluation inside Button stops after some seconds

I would like to trigger a long calculation inside a dynamic module with a Button. It seems that the evaluation stops without an error-message after some seconds. I made a test outside the a dynamic ...
4
votes
4answers
731 views

How to change color dynamically?

I am new to Mathematica and want to change the FillingStyle Dynamically in this Plot. I want ...
9
votes
6answers
421 views

How to make text flash for a short period

How could I display text that flashed red for a half second or so and then reverted to black? (Or was put in bold and reverted to normal, etc.)
7
votes
1answer
405 views

How to create a multi-selectable setterbar with colored buttons

Background: consider the following code-snippet. ...
8
votes
1answer
96 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 ...
79
votes
2answers
7k views

How to manipulate 2D plots?

When it comes to visual analysis, large datasets or data with intricate internal details often makes plotting in 2D useless, as the outcome is either just a fraction of the full dataset, or no details ...
7
votes
1answer
479 views

Want Interactive PlotRange of Graphics[{}]

I am trying to do: ...
7
votes
3answers
209 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}}: ...
3
votes
2answers
247 views

Can't get DynamicModule[{..},..EventHandler[] ] working

This makes a slider to control the number of points. Click in the Graphics and the points slide over to where you click. ...
7
votes
2answers
266 views

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

Consider the following snippet as a reference. ...
6
votes
1answer
165 views

How can I make sure all InputFields have values before processing a nb form?

This is a two part problem: I have a form that accepts both numeric and text inputs, then runs a function using a "process" Button. The issue I'm having is users that forget to fill out all of the ...
16
votes
0answers
491 views

How can I trace a functional expression's evaluation visually?

Ok, so the goal is to visualize the execution of this expression foo /@ {3 + 1, bar /@ {1 + 2, {4 + 7}}} in the following fashion using nested rectangles with ...
14
votes
3answers
767 views

How can I set the view vector in a 3D scene by tracking my face's position?

Faking 3D with 2D tracking data is something that I've long wanted to implement for use with my front facing laptop camera. A first step to solving this would be dynamically setting the viewpoint ...
10
votes
3answers
266 views

Intermediate display similar to PrintTemporary

Using MMA we often come across situations like the following cityLIST = CityData[#, "Name"] & /@ CityData[]; This code if you evaluate will emit some display ...
12
votes
3answers
305 views

In InputField, how to prevent Shift-Return from generating a new cell?

When running the following in a notebook (not a deployed CDF file), it can sometimes be annoying that accidentally pressing Shift-Return breaks out of the user ...
17
votes
4answers
620 views

How can I make an InputField with a proper newline/carriage return?

The return key does not work as expected in an InputField, how can I overcome this?
37
votes
3answers
985 views

How can I set up a versioning system within a notebook?

Since the Frontend crashes a lot, for important work it would be nice to have the notebook automatically branch and save itself every so many minutes. For instance, commands like ...
6
votes
2answers
208 views

Creating a slider that instead of setting, increases/decreases a variable

The objective: Create a slider that, when displaced from the center, increases-decreases the value of another variable at a rate proportional to the displacement. So, I create a slider that ...
12
votes
2answers
262 views

ShearingTransform and Dynamic

Background: I have a geometric transformation composed of a RotationTransform, ScalingTransform and ...
2
votes
2answers
331 views

How to format dynamic InputField value using NumberForm?

Background: I want all numbers in InputField's displayed as NumberForm[num,2]; Now, consider the following the snippet of ...
2
votes
1answer
94 views

PaneSelector and options in a Module

Consider the following snippet of code: ...
5
votes
2answers
298 views

How to create a ListLinePlot with a layout analogous to ChartLayout -> “Stacked”?

I am using 3 checkboxes as desktops, portables and ipods in such a way that when I click to desktops it should shows ListLinePlot of ...
12
votes
1answer
281 views

How to create a notebook element that can replace itself?

I would like to create a notebook element that can replace itself. Here's an example to illustrate: ...
11
votes
2answers
347 views

Memory leak in FE?

A very abridged example of what was originally a major leak ...
24
votes
1answer
609 views

How do I find all the possible events that work with EventHandler?

The EventHandler documentation, More Information section, lists 5 mouse events: ...
6
votes
2answers
262 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
817 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 ...
4
votes
1answer
133 views

How to speed up mouse events?

Grids of dynamic objects responding to mouseovers seem to be quite slow in general, for instance: ...
6
votes
1answer
294 views

LocatorPane and multiple EventHandlers, PassEventsDown option

Consider the following piece of code from Heike as an ( accepted ) answer on LocatorPane, selecting multiple Locators - Basically the code implements dragging polygons on a LocatorPane. ...
19
votes
3answers
742 views

LocatorPane and PlotRange

Consider the following snippet from the documentation on LocatorPane ...
36
votes
3answers
4k views

How to create a progress bar?

I would like to create a progress bar tool that allows me to see how my computations are going. I found answers to this question on many sites, I even found a package for it ( ...
3
votes
1answer
243 views

LocatorPane, Dynamic and deleting locators

Compare the following two code snippets : Version 1 ...
3
votes
2answers
265 views

Question about MapThread and Dynamic

I don't understand the following: f[a_, b_] := a + b ls = {1, 2, 3}; MapThread[f, {ls, {10, 20, 30}}] This yields ( as expected ) {11,22,33} If I change ...
14
votes
3answers
943 views

How can locators be added to the points on a 3D grid?

Here is a pared down example of some 3D data that I want to make dynamic and add locators to each set of points. Is that possible? ...
11
votes
1answer
570 views

InputField does not update correctly

By fiddling with Vitaliy's solution for a small GUI, I've come accross this particular behaviour of InputField: ...
8
votes
2answers
328 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 ...
0
votes
0answers
64 views

InputString in Button freezes Mathematica [duplicate]

Possible Duplicate: Why does Button[ … , ChoiceDialog[] ] freeze the front end? Warning: the following code may freeze your session, as it does mine. I have to wait for the dialog ...
16
votes
1answer
623 views

Manipulating a continuous stream of sounds

I need some audio-feedback when a locator is moved on a surface. I have the following code that produces a beep every time the dynamic controller is interacted with such that the pitch of the sound ...
6
votes
3answers
339 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. ...
20
votes
3answers
867 views

Detecting KeyUp events

Is there a way to detect when a key is released, similar to EventHandler[InputField[], {"KeyDown", "k"} :> Print["k pressed"]] It seems such detection isn't ...
7
votes
2answers
185 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 ...
27
votes
4answers
1k views

Question about collections of custom GUI controls for Mathematica

Background: I have only recently begun programming GUIs in Mathematica, so I have a continuous need for custom controls. I needed a scrollable list control and with the help of Google I found a ...
11
votes
4answers
786 views

Manipulate BarChart with Mathematica

In the following minimal working example: Manipulate[BarChart[{a,b}],{a,1,2},{b,1,2}] I'd like to be able to control the size of the bars by using some sort of ...
11
votes
2answers
292 views

Make a button that evaluates a function over and over

I would like to have a command "RedoButton" which would make a button (or whatever control is suitable) that when clicked would print the value of a certain function over and over in the same place. ...
21
votes
2answers
374 views

What is the equivalent of a prototypical Manipulate in lower level functions?

Background: In the Mathematica tutorial 'Dynamic Interactivity' I read that there is a way of developing GUIs in Mathematica that do not use Manipulate. I want to ...