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

learn more… | top users | synonyms

3
votes
1answer
166 views

How can I selectively trigger computations in Manipulate?

I have a Manipulate that uses RandomVariate and Random that I would like to have redraw and ...
0
votes
0answers
58 views

Return Values from DynamicModule [duplicate]

I found the answer to my question here. How to extract the numerical value of a dynamical variable Is it possible to have the return value from a DynamicModule be ...
2
votes
0answers
35 views

Differences in SetDelayed (:=) in Module and DynamicModule [duplicate]

I have a question about the differences in SetDelayed assignment functions in a Module and in a ...
2
votes
2answers
99 views

DynamicModule with intermediate expressions

I am trying to generalize a Manipulate construct into a DynamicModule one to try and include smoother controls, but I seem to be ...
1
vote
1answer
92 views

TabView switches tab number without user input in first evaluation

I've attempted to use TabView in a Manipulate to display sets of controls and alter a "display" associated with each set of ...
3
votes
1answer
125 views

Dynamic generation of Buttons

The Project I am trying to dynamically turn on/off the display of data for a circos-esque plot that I generated. The Code I have data stored in mfData and a ...
2
votes
2answers
92 views

How could I change the apperance of a button when some hard computation is finished?

I want to have some bottons inside manipulate to calculate some time consuming functions. For example the following code changes its color after the calculation of Total[Range[123456000]] is ...
2
votes
1answer
130 views

Trouble using If[] within TabView Manipulate control

If I place an If in the "body" of a Manipulate as in: ...
0
votes
2answers
116 views

trouble with Dynamic range in SetterBar

It appears that I can set the range to a Dynamic variable in a Manipulate control, but not in a ...
2
votes
0answers
81 views

Is there a function similar to SQL's Iserror? [duplicate]

I have an output which I want to hide if there is an error otherwise display it. The output is a Dynamic[output] so I can't simply use something like ...
1
vote
2answers
115 views

Rate of change of dynamic variable

I have made a program that goes like this, the goal is to estimate the remaining time of a function (it is running a bunch of solveChase[] functions with different parameters which can be seen in the ...
1
vote
2answers
134 views

Is it possible to monitor the sum of squared errors in a NonlinearModelFit or FindFit procedure during the process?

Since fitting procedures using NonlinearModelFit (or `FindFit) sometimes take very long, I would like to monitor the sum of squared errors during the process ...
0
votes
2answers
168 views

Dynamically change the variables plotted against in Plot3D

This question posed by @Cam is the closest I can find to my question but I feel that the answers don't really guide me in the way in which I'd like to proceed.... How do I dynamically change ...
0
votes
1answer
172 views

How to build an interface that plots an equation given as text by a user?

I would like to create a window where a student may enter an equation and, by clicking on a button, the function gets plotted. In the original Spanish: Quiero realizar una ventana en la cual el ...
4
votes
0answers
138 views

DynamicModule, SaveDefinitions and global functions

Unfortunately, I had not checked stackoverflow, because there, the exact same behavior was already reported. Please see the Q&A "SaveDefinitions considered dangerous". Up-front, I'm on Ubuntu ...
0
votes
2answers
96 views
8
votes
3answers
226 views

How to allow ContinuousAction on something that is not all

I have this code: DynamicModule[{r = 1}, Grid[{{Slider[Dynamic[r]], SpanFromLeft}, {f[Dynamic[r]], g[Dynamic[r]]}}]] While I move the slider, $f$ ang $g$ are ...
4
votes
2answers
205 views

How to add the pause button to that dynamic stopwatch?

Referring to How to make a dynamic stopwatch? Timers can now be created with timer = makeTimer[] and utilised with actions such as ...
1
vote
1answer
210 views

dynamically set fit parameters and models with FindFit

I want to fit a gaussian profile by setting some values dynamically, but FindFit returns an error and i can't see the problem. with a given gaussian: ...
11
votes
3answers
335 views

Drawing an arrow pointing at the “Enable Dynamics” button

Sometimes my students are given Mathematica notebooks as part of an assignment, and asked to go through some demonstrations contained in the .nb file. A lot of times I get complaints that the "graphs ...
1
vote
1answer
63 views

InputField Insertion Point Movement

I am trying to make the Return Key move the insertion point to the end of the input field's text. Please see the example below for the problem I am facing. Namely, when the return key is pressed, the ...
0
votes
1answer
71 views

Trouble avoiding computation in DynamicModule when input field is not defined [duplicate]

I'm having trouble detecting when my InputForm supplied String variable has a value. After looking at: How to compute values only if input fields are filled? I tried a StringQ test: ...
1
vote
1answer
96 views

Manual CellGrouping option causes crash at cell evaluation

Update: Try to reproduce this behaviour with CellGrouping set to manual. To do that: either evaluate ...
4
votes
3answers
282 views

How to change the color of a button while it is pressed

I want to change the color of a button while it is pressed, pause for a short time and then change the color back to the original color. I can't seem to figure out how to do this (tried various forms ...
7
votes
1answer
153 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 ...
5
votes
1answer
174 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
78 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
82 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
224 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
79 views
2
votes
3answers
120 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
115 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
131 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
275 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
137 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
175 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
239 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
148 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
127 views

Incorrect behaviour of Locator inside Show?

Why doesn't Locator behave correctly in the following code? ...
8
votes
2answers
266 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
210 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
106 views

Control multiple locators along a plot

Update 1 @ Michael E2, my effort - for what it is worth!: ...
2
votes
2answers
308 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
287 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
144 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
175 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
93 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
115 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
200 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
132 views

Dynamically show usage

As the title states I would like to dynamically show ::usage on several functions. Let's consider two functions here: ...