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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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### 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 ...
6k views

### Make a beautiful Moiré effect

How do I make the following Moiré pattern? I tried: ...
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 ...
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-...
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?
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. ...
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: ...
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 ...
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: ...
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 ...
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 (...
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. ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 "...
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, ...
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 ...
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 ...
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 ...
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 ...
3k views

### Manipulate to GIF

I am using the following example code to export Manipulate to GIF: ...
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...
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: <...
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 ...
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 ...
784 views

### For a better animation of the solution from NDSolve

I obtained a numerical solution from the following code with NDSolve ...
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 ...
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 ...
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 ...
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 ...
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 ...
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: ...
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 ...
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 ...
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. ...
308 views

### How to see a code preview (in ExperimentalExplore[] 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 ...
212 views

### Manipulate not working inside DialogInput

Some controls do not appear to work with Manipulate inside a DialogInput. For example: ...
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 ...
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: ...
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 <...
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 ...
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: ...
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 ...
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: ...
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?