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

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How to get a number from a dynamic variable in “manipulate” [duplicate]

I did not find any satisfying answer to my question on this website (or I did not fully understood them as I am a quite new Mathematica user...) : So my question was: How can I get a real number (and ...
3
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0answers
112 views

How to restrict the mouse cursor to stay within a box?

I'm trying to use Mathematica to write small games, and I find that it would help to restrict the player's mouse into the game window (just like other games do). Is there any way to achieve this? ...
2
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3answers
206 views

How to create locked sliders with the ability of unlocking them?

This creates two locked sliders DynamicModule[{p = {2 π, 0}, r}, {Slider2D[Dynamic[r]], Slider2D[Dynamic[1 - r, (r = 1 - #) &]]}] How can I add a check ...
4
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0answers
55 views

FlipView can't handle CurrentValue[“MouseOver”]. Kernel crash

Is this code crashing your Mathematica session? (it can so look out :P) ...
4
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2answers
126 views

Entering scientific notation in an InputField

I am trying to make an InputField for numeric input, but InputField[Dynamic[num],Number] Does not allow the user to type ...
2
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1answer
80 views

Why can I edit only one character of the output of a Dynamic expression?

Try this: DynamicModule[{foo = \[Placeholder]}, foo] Note how we're able to edit the placeholder in the output, e.g. replace it with 42: ...
3
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2answers
192 views

DynamicModule/Dynamic CheckboxBar Slow for Large Lists

I am trying to create a dynamic construct that takes a large list of expressions and allows the user to interactively select any number of entries for further manipulation. This is what I have ...
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0answers
44 views

How to robustly apply ToBoxes to a Dynamic expression?

Inserting a Dynamic object in a boxform expression messes up syntax colouring. See the following example. where the variable ...
4
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2answers
132 views

DynamicModule updating unexpectedly

I have cut down a DynamicModule that was updating unexpectedly and found the following behaviour I don' t understand. If I do this I get one random value as expected ...
2
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1answer
76 views

Alternate controls in manipulate

Is there a way to have two controls that govern a single variable in a Manipulate? Specifically, I am using a Locator to select an {x,y} coordinate, but I would also like the user to be able to ...
0
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0answers
60 views

Accessing variables outside DynamicModule

I have this DynamicModule which is basically a form of input fields that are parameters. My two final functions are H1 and ...
7
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3answers
176 views

Problem with CurrentValue[“MouseOver”] when graphics are wrapped with Deploy

Please take a look at following toy example: ...
2
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1answer
149 views

Render dynamic Graphics objects static

As was discussed in the comments of another question (MathLink Graphical Output (Plots) to File), Graphcis objects produced by commands such as ...
2
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2answers
139 views

Solving a dynamic program via recursion

I'm trying to use recursion to solve a joint inventory/ dynamic pricing problem as in monahan, petruzzi and zhao 2004. I tried to solve for y[t] and ...
4
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2answers
163 views

TrackedSymbols affected by CurrentValue. Another problem with SetDelayed(:=)+OwnVales in Initialization

It is MWE, only a Disk[] that should print "Click" when clicked. Also "date... updating" ...
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0answers
48 views

Dynamically Update Inset within Graphics with RunScheduledTask

I followed the instructions given below to play with RunScheduledTask within DynamicModule. ScheduledTask with scoped ...
4
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1answer
126 views

How to inherit options by scoping?

Consider the following example: you have a function framed producing a cell with a button that, when pushed, calls framed again. ...
0
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1answer
148 views

GUI and Dynamic update problems

I have made many functions that connect to a MySQL database perform operations then export exel spreadsheet. I also import spreadsheet data into the database. I would like to get many of these ...
4
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1answer
95 views

Why does a heavy background slow LocatorPane from updating, even if only the locators are Dynamic?

I'm having some trouble getting a dynamic plot to operate efficiently, and I think I've tracked down at least part of the problem to some pretty weird behaviour on the part of ...
0
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1answer
95 views

Why do InputFields not respond in Manipulate utilizing FindGeometricTransform?

In the following code changing the InputField does not result in observing changes in a result from FindGeometricTransform, but ...
0
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1answer
100 views

Setting plot size within vector; dynamic slider (two part question)

I have a question about the size of a plot in mathematica. I'm working on some differential equations (a simplified model of heat transfer in a building). I've programmed it so that you can set ...
2
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1answer
61 views

How to dynamically update a variable by using mouse over?

I want to extract the Graphics type when I hover my mouse over an object, but I failed to do so. Below is the code I am working on. Any suggestions are welcome ...
3
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1answer
147 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
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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
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0answers
34 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
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2answers
94 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
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1answer
83 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
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1answer
117 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
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2answers
91 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
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1answer
110 views

Trouble using If[] within TabView Manipulate control

If I place an If in the "body" of a Manipulate as in: ...
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2answers
101 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
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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 ...
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2answers
109 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 ...
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2answers
116 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
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2answers
161 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
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1answer
169 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
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0answers
127 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
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2answers
88 views
8
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3answers
225 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
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2answers
178 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
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1answer
173 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
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3answers
312 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
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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
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1answer
70 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
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1answer
94 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
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3answers
268 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 ...
6
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1answer
146 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
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1answer
172 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
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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
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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: ...