Questions relating to the dynamic family of functions in Mathematica, such as Dynamic, DynamicModule and Manipulate.
14
votes
1answer
397 views
Module vs DynamicModule for a dynamic variables in a grid. || Spelling Bee
When my daughter asked me help with her spelling homework, for me the obvious thing to do was to write a Mathematica program for it.
The words:
...
10
votes
3answers
195 views
In InputField, how to prevent Shift-Return from generating a new cell?
When running the following in a notebook (not a deployed CDF file), it can sometimes be annoying that accidentally pressing Shift-Return breaks out of the user ...
8
votes
2answers
207 views
Soft-Match String Comparison
I have a list of names in which I would like to check for duplicates. However, within the list, the duplicates may not show up as exact duplicates of each other - for instance,
...
17
votes
1answer
161 views
“With” as part of the “Dynamic Interactivity Language”
I noticed that in Mathematica's Function Navigator With is listed as being part of the "Dynamic Interactivity Language".
It is not the first (or even the fourth, ...
13
votes
3answers
283 views
Creating a notebook that has cells of a certain style password protected
I am teaching students how to use Mathematica. I want to create a problem set that has cells with a certain style (probably Input or some new style that is a variant of Input) locked down so that the ...
8
votes
6answers
309 views
How to make text flash for a short period
How could I display text that flashed red for a half second or so and then reverted to black? (Or was put in bold and reverted to normal, etc.)
6
votes
2answers
155 views
How to efficiently get the value from form UI built with dynamic InputField
Here is the code that I used to make a tabular UI.
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5
votes
1answer
105 views
How to make MousePosition more reliable
This takes a little patience to reproduce, but I got a screenshot of it in version 9 on Mac OS X 10.7.5:
With a small Graphics object, it occasionally happens that ...
5
votes
1answer
137 views
Using more than one set of Locators in a Manipulate
I need to add locators dynamically to different sets.
With one set this works OK:
...
5
votes
1answer
110 views
Control variable and body variable decoupling in Manipulate
This issue was raised as an offside problem in this thread. Consider the following example, that does not work as expected:
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4
votes
1answer
100 views
How to speed up mouse events?
Grids of dynamic objects responding to mouseovers seem to be quite slow in general, for instance:
...
3
votes
4answers
261 views
sliding a tangent line along a curve
I am confused by Dynamic. I am trying to slide a tangent line along a curve, without using DynamicModule, so that I can include ...
2
votes
0answers
42 views
Non-preemptive evaluation of a dynamic function? [duplicate]
I want to monitor a long calculation that is triggered by the release of a Slider. While one can indicate running calculations when the main evaluation loop is ...
11
votes
1answer
147 views
why does a variable become real when using the second argument of Dynamic?
Version 9, on windows 7
Please compare these 2 very simple examples
Manipulate[
x,
Row[{Manipulator[Dynamic[x], {0, 10, 1/100}]}],
{{x, 1}, None}
]
and
...
11
votes
3answers
211 views
Plot on command within DynamicModule?
Suppose I have a DynamicModule with all sorts of controls to set some parameters for a graphics object.
...
8
votes
2answers
160 views
Checking from a preemptive evaluation whether a main evaluation is ongoing
How can I programmatically check from a preemptive evaluation whether a main evaluation is currently ongoing?
I need a function mainEvaluationOngoingQ[] so that
...
7
votes
0answers
217 views
How to improve these WASD + mouse look 3D controls?
Insipred by this question and the corresponding answer I've written a code for full-screen exploration of 3D scenes using standard WASD and mouse look controls. Here it is.
...
6
votes
1answer
407 views
How to make a dynamic stopwatch?
For some experiments I need some basic timer function. I tried various methods, and neither of them are fully satisfactory. What I need is a button, that starts/stops a timer, resets timer with each ...
6
votes
1answer
254 views
Way to find color at a point in a Graphics?
I need to figure out a way to find out the RGB color value at a certain coordinate in a Graphics object. The Graphics object I am dealing with is continually Dynamically updated, so it is made of ...
5
votes
2answers
115 views
A command for outputting a list of parameter values in a Manipulate interface
I am looking for a command that will output a list of values that correspond to the current parameter values manually set on a particular Manipulate interface.
For ...
5
votes
1answer
198 views
Make EventHandler work for clicks and keys in a Dynamic display
I am trying to write a way that will do certain events depending on what screen is showing.
What happens so far is that the screen will change in accordance to a click, but when you try to do the ...
4
votes
3answers
162 views
Is it possible to replicate the “magic” of OptionPatterns[] with DynamicModule's local variables?
Creating richer interactive interfaces that are generated by a DynamicModule invariably requires more complex data structures and in particular, a larger argument ...
4
votes
4answers
395 views
How to change color dynamically?
I am new to Mathematica and want to change the FillingStyle Dynamically in this Plot. I want ...
3
votes
1answer
73 views
Alternative updating of a dynamic expression
I am looking for a solution to selectively update a dynamic expression expr which is dependent on multiple control variables ...
10
votes
2answers
176 views
Make a button that evaluates a function over and over
I would like to have a command "RedoButton" which would make a button (or whatever control is suitable) that when clicked would print the value of a certain function over and over in the same place. ...
10
votes
1answer
169 views
Rounding problems inside InputField
Consider the following InputField
InputField[Dynamic[h2,
If[# === Null, h2 = h2, h2 = Round[#, 0.001]] &], Number]
The ...
8
votes
2answers
226 views
Strange behavior of CreateDialog's WindowSize option
Compare the two dialog windows, created by the same code except in the first WindowSize has a value while I omit it in the second one. Note, that ...
7
votes
1answer
219 views
Locking a value when Manipulating variables
I'm trying to achieve something similar to Bret Victor's brilliant Scrubbing Calculator in Mathematica.
By using Manipulate I'd like to change the values of the variables such that if I modify one ...
5
votes
3answers
169 views
How do you properly create Buttons to change dynamic variables using Table
In this example, I want a series of four buttons to change the value of a variable that is used dynamically to drive a plot. I am trying to figure out why using Table around the buttons causes a ...
4
votes
3answers
165 views
How can I create a custom control which evaluates to a list of values or replacements?
I have a set of variables which are used in various places in my calculations (solving a system, initial conditions, etc.). In order to make this easier to deal with, I want to make a control-like ...
4
votes
2answers
242 views
Switching off Dynamic updating on a cell by cell basis
Is there a simple way to switch off Dynamic evaluation for a particular cell? I usually delete the cell if it disturbs other evaluations or affects the performance ...
3
votes
2answers
129 views
How to make DynamicModule work without an extra ENTER
I've been trying to learn more about DynamicModule (I do not use them, as I used Manipulate all the time).
After some time ...
3
votes
2answers
125 views
Why does the syntax highlighter color a local symbol red inside DynamicModule?
I am adding a Module inside DynamicModule here is an example (thanks to @rm-rf for this simple example)
...
3
votes
2answers
233 views
Dynamic matrix multiplication
I have the following problem:
I want to multiply two matrices and sum them to another matrix C. A.B+ 2B Easy!
The matrix A varies as a function of three inputs a,b and c. The second matrix, B, is a ...
3
votes
1answer
126 views
Dynamically link cell content in Mathematica?
Is it possible to dynamically link the content of two cells? For example, can I set up a Notebook with two text cells that display the same value, and if the user types in one the other updates, etc.? ...
2
votes
1answer
125 views
0
votes
1answer
73 views
TabView resets to default when selecting data using Control object
I have 3 drop down boxes on one of the tabs in my TabView. Two of the drop down boxes results are used in a Select statement to ...
0
votes
0answers
136 views
Using Control Objects with TabView [duplicate]
I have a number of different tabs on my 'dashboard'. Each tab has a few different Controls (drop down boxes) that the user makes selections with. These selections determine what is displayed on the ...
