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

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5
votes
1answer
173 views

How to make a piece of a pie chart change color upon clicking it?

I am trying to use the EventHandler and have managed to make the text change color upon clicking it, but cannot seem to make each piece of the pie chart change ...
1
vote
1answer
74 views

Issue with DateListPlot and Dynamic List

Imagine that we are getting readings from an external device (ie Arduino) at a given interval of time. We'll simulate the reading as follows. ...
0
votes
1answer
81 views

Use a pre-computed list instead of RandomInteger

I would like to replace RandomInteger[{1, 10}, {10, 10}] in the following code: ...
3
votes
1answer
201 views

Combine a dynamic module with a manipulation

I would like to combine a dynamic module with a manipulation, whilst maintaining the functionality of both. I have tried things like Show and ...
3
votes
1answer
75 views
2
votes
3answers
114 views

Dynamic plot with Evaluate on expression

I'm trying to make a make a plot of a table of expressions, which should be pre-evaluated (since they are infinite series with analytic sums). I'm able to make the plot normally with ...
2
votes
2answers
108 views

Getting variables out of Dynamic Modules after restoring the program

The scrap of code below [from Mathematica's Help on DynamicModules] generates a Pane of ...
2
votes
1answer
122 views

Buttons Which Change Color, Each Time Pressed [closed]

I need to have 100 buttons, which their color is defined by the parity of number of times they are pressed: If they're pressed an even number of times their color is blue, and otherwise red. I don't ...
3
votes
4answers
265 views

Change all Options of Plot Dynamically

I am trying to make a series of changes in the appearance of the Plot of some function. I am trying to use Manipulate for my experiments. I tried to change the following code ...
3
votes
1answer
133 views

Confusing font information from CurrentValue

I'm trying to programmatically get the width of a character in Mathematica's default fixed-width font, Courier. I believe CurrentValue holds the answer but I'm ...
1
vote
1answer
164 views

Manipulate with variable number of sliders plus variable number of functions

I'm trying to setup a Manipulate where I have a variable number of sliders similar to this one, where every slider controls a function. In my case, there will be an additional slider which sets the ...
2
votes
3answers
223 views

Animation is jerky, but slider is not

When I do the following simple animation (from the book Mathematica Navigator, p. 316) the slider control changes the image smoothly, but when I play the animation it is jerky. Is there anything that ...
1
vote
1answer
138 views

Create Slider to start/stop/move Point

I want to be able to start, stop, and move the dynamically moving point simultaneously in both animations. The "PlayPauseButton" in the animations only controls the given animation. Indeed, I want ...
2
votes
3answers
124 views

Incorrect behaviour of Locator inside Show?

Why doesn't Locator behave correctly in the following code? ...
8
votes
2answers
254 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 ...
2
votes
1answer
198 views

Why is this expression being held, and how can I evaluate it?

I can't figure out why an expression isn't evaluating, even though there's no Hold* in its FullForm: ...
1
vote
1answer
99 views

Control multiple locators along a plot

Update 1 @ Michael E2, my effort - for what it is worth!: ...
2
votes
2answers
266 views

Locator to show coordinates of plot

Old I would like to make the locator follow a plot, giving the coordinates as it moves. I don't really know where to start with this one, but I would like the dynamic plot to look something like ...
3
votes
2answers
245 views

How to show the coordinates of a point and the equation of a line dynamically? [duplicate]

I am constructing a diagram that consists of a sine curve and its tangent line at a given argument. However, I want to show the coordinates of the point of tangency and the equation of the tangent ...
2
votes
1answer
135 views

Manipulate Locator warping (snap to cursor)

I'm looking to have a Manipulator Locator that moves in discrete steps and requies the user to click on/near the locator position.. consider these two examples: ...
5
votes
1answer
161 views

Using free-form linguistic input in a dynamic input field

I've been playing around with dynamic input fields; here's a basic example, which just consists of an input field where the user can enter a function and then a button that can be clicked to graph the ...
2
votes
1answer
88 views

Input[] inside DynamicModule causing a kernel crash

I have those few lines of code causing a crash and I can't figure out why: ...
3
votes
1answer
111 views

Dynamically apply a function fed by Input[]

Here is a bit of code: funlist = {Plot,ListPlot}; Input[Panel[PopupMenu[Dynamic@whichfun, funlist], "blabla"],Dynamic@whichfun] The idea here is to select what ...
12
votes
3answers
193 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 ...
3
votes
2answers
128 views

Dynamically show usage

As the title states I would like to dynamically show ::usage on several functions. Let's consider two functions here: ...
2
votes
1answer
118 views

Delay of events detection dependent of “MouseDown” position

Let's say we have a Rectangle with color which depends of CurrentValue["MouseOver"]: ...
3
votes
1answer
221 views

Automatically dealing with “disable dynamic updating”

I'm programmatically creating notebooks containing dynamic content. When a new notebook is being created, a window pops up: I then manually click on "Continue" and it will create the notebook. The ...
1
vote
1answer
125 views

Creating a Dynamic MSSQL connection

Hello i am trying to create a notebook that automatically connects to a database on MSSQL server and would then query this to create a sort of personal report. I have connected to this database and ...
2
votes
1answer
108 views

Interaction between two sliders that update the same variable

I'm basing this on the code found in the Introduction to Dynamics. I added one more slider which doesn't use the "round and snap" feature given in the link above: ...
2
votes
1answer
123 views

Remove braces, {}, from around DynamicModule output?

Is there a way to remove the braces from the front end output associated with DynamicModule? For instance: ...
3
votes
1answer
156 views

Make dynamic controls from existing list

I have a list of variables (c1,c2,c3,c4), each with its ...
0
votes
1answer
87 views

Can a large Grid of 3DListPlots be rotated by a single Dynamic control?

So I have a few hundred plots in a grid, that I thought would be nice to adjust the data view with a Dynamic slider. I'm using Jens solution for the Grid plotting here . Manipulating multiple plots ...
3
votes
2answers
148 views

Using list elements in TrackedSymbols for Dynamic

During the execution of the following code a column of three lists and two sliders are displaying in output. The first list updates if either a or b changes. The second list updates only if the value ...
1
vote
0answers
59 views

Convert ImageSize to FieldSize [duplicate]

How might I construct a function called EmToPX[p] such that the following 2 InputFields would be the same width. If not please ...
1
vote
2answers
91 views

Using Refresh to skip expensive computations

I have several variables in my DynamicModule and some parts of my computation depend only on subset of them. I am trying to use Refresh to "cache" values but can't ...
2
votes
1answer
110 views

Module Inside ToBoxes or MakeBoxes

Does someone mind explaining why Module doesn't seem to work while inside ToBoxes or MakeBoxes. ...
9
votes
1answer
245 views

Possible bug with second argument of Dynamic

According to the documentation, Dynamic Details & Options section, especially: For interactive mouse operations Dynamic[expr,{f_start, f, f_end}] typically ...
1
vote
1answer
79 views

Locator with Integer value coordinates [closed]

I want to get the Pixel value of an image.and here is my code ...
3
votes
1answer
54 views

Delete `x,y,z` occurrence (or any permutation of it) from parent data set (dynamically)?

Simple question: I would like to dynamically specify a list of 3 elements, {x,y,z}. Then I'd like to find that list, or any of its permutations, in a parent data ...
2
votes
3answers
155 views

Wrapping grid with dynamic

I'm trying to build a sortable grid: ...
7
votes
1answer
251 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 ...
2
votes
1answer
70 views

Strange response with dynamic texture and MousePosition

I built a cubic, then use MousePosition together with GUIScreenShot to take a floating region with fixed size (200*200) on the ...
5
votes
1answer
122 views

How can I use Dynamic to run a script when a new file is added to a directory?

I have an external program saving files to some directory on my hard disc. I'd like to run a script that imports and runs a script on each file as it is added to the directory. Is there a simple way ...
2
votes
1answer
143 views

Dynamic [ NotebookEvaluate [“_”] ]

A nice way to centralize various tasks in one notebook is the NotebookEvaluation function. For instance I can evaluate ten notebooks from a single notebook (e.g. ...
0
votes
1answer
101 views

InputField equations and Solve

I'm trying to get this piece of code to work: ...
10
votes
5answers
652 views

How can I simulate this animation of checking for prime numbers?

I can only implement a very simple one, I want to make my code look like that. Any better ideas? ...
1
vote
2answers
195 views

Import image using InputField and Button

I've got a pretty basic problem, which is probably easily solved, but for all my efforts I haven't found a solution yet: I want to make an Image importer of the following form: An ...
0
votes
1answer
116 views

Reuse a dynamic list [duplicate]

Consider this Dynamic list ...
2
votes
3answers
325 views

Making a multiple choice button

I've written the following code to create a multiple choice button that takes an arbitrary number of answer options and will assign a variable true/false depending on whether or not the correct choice ...
0
votes
1answer
154 views

How to compute values only if input fields are filled?

In the following code how can I keep the DynamicModule from computing values if the input values are not all filled? If I don't specify default values it will show the code used to compute the values ...