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Questions tagged [manipulate]

Questions on the Manipulate function of Mathematica, a function that allows the interactive manipulation of certain parameters in a Mathematica expression.

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38
votes
3answers
3k views

Manipulate with a variable number of sliders

I have a function that operates on a list of parameters of variable-length $n$. I would like to create a Manipulate[] that has $n$ sliders, one for each list ...
27
votes
5answers
6k views

Make a beautiful Moiré effect

How do I make the following Moiré pattern? I tried: ...
27
votes
6answers
3k views

How are parameters evaluated for a Plot in Manipulate

I am trying to get my head around how Manipulate evaluates functions in a Plot. I have read the introduction to Manipulate, and introduction to Dynamic, but I still ...
26
votes
6answers
6k views

Using ListPointPlot3D to simulate 2D plots moving in time

I wrote a 1D solver for the heat equation $u_t=u_{xx}$, and I can animate the solution using normal ListPlot command, where the x-axis is the rod length, and the y-...
26
votes
2answers
3k views

How can I set the speed of manipulate play button?

Can you set the speed at which a Manipulate plays when the play button is clicked?
23
votes
4answers
1k views

Change the color of a Locator in a Manipulate

How can I change the color of a Locator in a Manipulate? As an example, consider the following. ...
23
votes
2answers
883 views

Better way to visualize cylinder puzzle solution

The above puzzle has been a recent source of amusement in my clique. I decided to provide a visualization to motivate solution (here): My code: ...
23
votes
2answers
578 views

The dangers of SaveDefinitions — should this really happen?

I have been bitten hard by SaveDefinitions -> True. I'll describe in detail what happened below. My questions are: Is this a bug? What is the most convenient ...
22
votes
3answers
1k views

How to modularize custom controls for Manipulate?

Background: My Manipulate programs are becoming (too) long. I want to split them up in to independent modules, if at all possible. Take this program as a prototype: ...
22
votes
2answers
476 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 ...
22
votes
1answer
1k views

What is the proper method to load a Mathematica package inside a DynamicModule

I have a DynamicModule that requires loading of Mathematica packages. The usual methods do not seem to apply (...
18
votes
3answers
598 views

What does None mean in a control specification for Manipulate?

I am now struggling to understand code that contains the following (simplified) Manipulate structure. ...
18
votes
4answers
2k views

Mathematica Manipulate with macros AND variable number of controls (persistence desired)

This post about avoiding code duplication in Manipulate helped a lot getting as far as I did. The method of "macros" outlined there works excellent, but when the ...
18
votes
4answers
1k views

In a CDF can I suppress or avoid “This file contains potentially unsafe dynamic content…”

I created a CDF to distribute to a single trusted user who both knows and trusts me and everything I make for them. I downloaded the CDF player and the CDF to one of their computers. The CDF works ...
17
votes
3answers
2k views

Logarithmic slider

Is it possible to create a logarithmic slider similar to this one that responds to a change of the variable value? That is, when the slider is moved, the variable value should update. When the ...
17
votes
1answer
562 views

Is it possible to use Begin and End inside a Manipulate?

May be someone can explain why I can't use Begin["context`"] and End[] inside a Manipulate ...
17
votes
3answers
4k views

The most simple Manipulate freezes the notebook on v10.1

I realize this won't be a particularly clear question. As I'm not able myself to find a pattern for the problem I'm talking about I won't be able to give enough informations to make it fully ...
16
votes
3answers
2k views

Particles bouncing in a 3D box

I made this Manipulate code which shows a pack of particles randomly moving inside a box. It has a huge performance issue. What should be the best way in doing "...
16
votes
4answers
377 views

Resizing or moving Notebook window causes Manipulate to update its argument

Bug introduced in 10.0 and fixed in 10.3.0 Check this example: Manipulate[Grid[{{RandomReal[10]}, {Plot[Sin[x], {x, 0, 2 Pi}]}}], {a, 1, 3}] As you can see, ...
16
votes
3answers
931 views

Simulate a simple spinner

I'm teaching some simple ideas in probability to students in grade 7. The "spinner" below works, but I'm wondering how I could make it just a bit more realistic by having it actually "spin" around a ...
16
votes
1answer
966 views

Making a “cached” version of `Manipulate[]`?

I have a function that is a bit too slow for Manipulate[]. Right now I plan to cache outputs outside the manipulation and just have the manipulator select among ...
16
votes
1answer
233 views

Putting large amounts of data inside a self-contained Manipulate

This is half tip, half question. If one tries to put a large amount of data inside the Initialization:>(code) part of a Manipulate, as one may be compelled to do in a Demonstration or where one wants ...
15
votes
2answers
3k views

Simple problem with Manipulate and Plot

Would anyone have an idea why the following doesn't work: rule = {z -> x^2 + 2 x + y}; Manipulate[ Plot[z /. rule, {x, 0, 10}], {{y, 2, "y"}, 1, 5} ] But ...
15
votes
2answers
3k views

Manipulate to GIF

I am using the following example code to export Manipulate to GIF: ...
15
votes
2answers
361 views

SaveDefinitions->True changes the displayed image

Bug introduced in 9.0.1 or earlier and fixed in 10.4.0 I have a Manipulate[ ] that displays an image with a superimposed Locator...
15
votes
1answer
4k views

How to visualize a random forest classifier?

I'd like to recreate this visualization (from python) in Mathematica: I'm not sure how to extract the decision boundaries from a classifier with "Method" set to "RandomForest". Here's the code: <...
15
votes
1answer
653 views

Evaluation indicator for a notebook

I have a GUI with a number of TabView and other Manipulate controls. Sometimes clicking from one tab view to the other can take ...
14
votes
3answers
3k views

RevolutionPlot3D: but NOT revolving about the z axis

I want to demonstrate generating a solid of revolution by revolving a planar region about, say, a horizontal axis. However, RevolutionPlot3D doesn't seem to have an ...
14
votes
2answers
784 views

For a better animation of the solution from NDSolve

I obtained a numerical solution from the following code with NDSolve ...
14
votes
2answers
926 views

How can I create an interactive ColorFunction using Manipulate?

I am trying to specify my own colors and scaling for the ColorFunction in ListDensityPlot. I have several lists of 2D values ...
14
votes
1answer
1k views

Can Manipulate controls have the option Appearance -> “Labeled” by default?

I was wondering if there's a way to tell Mathematica to use the option Appearance -> "Labeled" for all Manipulate commands by ...
14
votes
0answers
432 views

Initial values in Manipulate are hijacked by existing global variable values

Is the following behaviour a bug? It's the same in all versions between 9.0-10.2.0. Let's try this simple Manipulate with the initial value of ...
13
votes
3answers
2k views

Plots quality during manipulation

I apologize if this is a obvious question and answer, I don't often use Mathematica to display plots or graphics in general to be honest. So, I was tutoring my cousin yesterday in relation to Polar ...
13
votes
3answers
310 views

Selective evaluation of blocks of code in a Manipulate

Is it possible to attach certain pieces of code to certain controls in a Manipulate? For example, consider the following Manipulate ...
13
votes
6answers
2k views

How to set precision and format labeled Slider in Manipulate?

For my calculations, I need increased precision of parameter k in my Manipulate: ...
13
votes
3answers
823 views

Interdependent controls in Manipulate [duplicate]

Possible Duplicate: How to create interrelated sliders? locking a value when manipulating variables I need to create a Manipulate with two control parameters ...
13
votes
2answers
406 views

How to make an Epilog moveable with drag and drop

I would like to make an Epilog moveable. For example, the following code generates a Manipulate with a framed pane containing some notes. I would like the user to be able to move those notes anywhere ...
13
votes
2answers
732 views

Dynamic graphics are less responsive inside a Manipulate

I have some code which displays a GraphPlot and allows the user to click on any vertex in the graph to display some information about that vertex in a popup window. ...
13
votes
1answer
308 views

How to see a code preview (in Experimental`Explore[] or related GUI)

I have been messing around with built in Experimental`Explore[] function. You can call the function in Mathematica yourself to see what it looks like. It is a GUI ...
13
votes
1answer
212 views

Manipulate not working inside DialogInput

Some controls do not appear to work with Manipulate inside a DialogInput. For example: ...
13
votes
2answers
1k views

Restrict Locator to a certain graphic inside Manipulate

I would like to restrict the Locator inside Manipulate to a certain graphic. For example if I display two graphs, I would like to be able to click on the right one and use this information in other ...
13
votes
1answer
380 views

Using a MacBook's builtin sudden motion sensor with Manipulate

With the following code I can get the value of the "Sudden Motion Sensor", which is build into MacBooks: ...
12
votes
4answers
1k 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 <...
12
votes
2answers
2k views

“Reset” Button for Manipulate

I want to distribute a .cdf to my students wherein they manipulate 5 locators on a graph to define various shapes. The .cdf opens with the locators in a "nice" position, but of course it is very hard ...
12
votes
3answers
517 views

What is an efficient way of selecting multiple colors via Manipulate?

Background: The following snippet is what I (intend to) use in a Manipulate form where up to 12 different colors can be selected: ...
12
votes
2answers
1k views

How To interactively create a Polygon in a Graphic?

Background: suppose I start with the following (working) snippet. Manipulate[Graphics[Line[{{0, 0}, p}], PlotRange -> 2], {{p, {1, 1}}, Locator}] Ideally, I ...
12
votes
2answers
5k views

Export animation of a Manipulate autorun sequence?

I've got a Manipulate that does a vector field plot. Basically a function that returns a list of Graphics objects and a couple of sliders: ...
12
votes
2answers
2k views

Automatically expanding sliders in Manipulate

Is there some way to have all sliders expanded by default in a Manipulator object, i.e. as if I had clicked all "+" signs?
12
votes
3answers
1k views

1D quasicrystal: points on a line nearest to points on a lattice

I have a simple lattice / line manipulation: ...
12
votes
1answer
2k views

How to specify the InputField as a String in Manipulate

I'm putting together a Demonstration which utilizes a function which operates on a (manipulated) String, and I'd like the ...