1
vote
1answer
117 views

How to “merge” various graphics 2d into one 3d graphic? [duplicate]

I did some calculations and as result got a 2D graphic, but at the beginning of the work I used a constant parameter. What I want is to make a 3D graphic with this parameter as an axis, varying from 1 ...
20
votes
3answers
1k views

Convert spectral distribution to RGB color

Presume I have a spectrum as a function of wavelength (an example being the blackbody spectrum): I want to convert that to a single RGB color to display on-screen, i.e. the "color" of that object ...
8
votes
3answers
599 views

How can one draw a network with nodes and links in a grid shape?

I'd like to be able to use MMa's graphics to make something like this which I know must absolutely be possible (and probably easy) with MMa. I don't actually even need different colors (though ...
2
votes
0answers
60 views

How to copy text from InputField

The problem when you copy text from one InputFiled to another. Inserts in unnecessary places gap. For example copy the text "#bbb" (without the quotes) from one field to another get "# bbb" (without ...
6
votes
2answers
122 views

Complex result for Real vectors in VectorAngle

I was expecting a real angle using VectorAngle when passing real valued vectors, however I obtained a complex angle. ...
2
votes
1answer
108 views

Get rid of “Testing Notebook” toolbar

I was messing around with different styles and tried the MUnit style. I converted back to Standard Report but I still see the toolbar for testing notebook. Is there a way to get rid of it?
7
votes
1answer
184 views

Why am I getting a kernel crash on Chop?

Solve bug (see answer) introduced in 9.0 and persisting through 10.2.0 First post, hopefully I figure out the formatting easily. Please forgive me if this posts ...
5
votes
1answer
196 views

How can I make a “self-referential” replacement operation self-contained?

Fairly often I find use for replacement rules that call themselves on the right-hand side of the rule, e.g.: ...
2
votes
1answer
829 views

Test a wooden board's vibration mode

Here is a wooden board, with dimensions shown on the picture below. How we can use Mathematica's newly build-in finite element analysis features to show the different modes of its vibrations. Assuming ...
1
vote
3answers
155 views

How to ReplaceAll independent of depth?

I have a big list which in principle can be described as this more compact list : ...
2
votes
0answers
139 views

How do I choose only one branch of ArcTan?

I have a problem concerning ArcTan drawing a graph using ListPlot. I import a table of data: ...
0
votes
1answer
149 views

Plotting 2D color function on the plane [duplicate]

Suppose p is a some point in the plane. The function f[q] defined as ...
4
votes
0answers
136 views

Is it possible to Compile the function with string argument?

As we can see from the Compile documentation, the typical arguments for Compile should be ...
2
votes
2answers
355 views

Using compiled function inside NMinimize

Consider this code: ...
2
votes
0answers
139 views

Download a notebook (or any type of file) from the cloud

Let us say that I have a Notebook in the Wolfram Programming Cloud called foo.nb. If I try CloudGet["foo.nb"], what I get back ...
2
votes
2answers
185 views

How to use Compile

Consider the code below: variable = Sin[x]; fun = Compile[{x}, variable ]; fun[1] When I do this I get the error: ...
1
vote
1answer
78 views

Faster code for solving an equation with parameters

I am new to Mathematica and wanted to solve an equation that depends on parameters. The code is below ...
2
votes
0answers
77 views

Adding an unused column creates an error in JoinAcross

I'd been having trouble using JoinAcross on two datasets. After going through the answers to my original question and fixing my code, I find I'm now having a ...
3
votes
0answers
45 views

Create custom mappings of Mathematica Expressions => Java Objects?

I would like to call a JLink-based java function from Mathematica with a Mathematica Span[] object as shorthand, like so... ...
4
votes
1answer
138 views

Missing functions in the Raspberry Pi V10 release

There are a few Mathematica users beside myself that are running it on a Raspberry Pi, and we found out it does not always perform the same as the Desktop version [1][2]. During the testing of the ...
4
votes
1answer
215 views

Removing Linear drift from an oscillating data

I have an array of 800,000 data measured at 1.1s time gap. It is oscillating data but has clear linear drift. I want to remove this linear drift. But the estimates by ...
2
votes
3answers
261 views

How to obtain non-trivial solution of equal ratios

How can I obtain a non-trivial solution of the following: $$\frac{a}{b+c}=\frac{b}{c+a}=\frac{c}{a+b}$$ The answer is $a=b=c=1$.
0
votes
3answers
163 views

Avoid creation of OwnValues when inserting transformation rules into Experimental`OptimizeExpression

I have a large list of transformation rules that I want to simplify. I find Experimental`OptimizeExpression works as it gets me the answers. My question is: **I can only get this to work when I ...
0
votes
0answers
54 views

How to extract data from a plot? [duplicate]

Here is the equation I want to plot, ...
3
votes
0answers
57 views

Evaluating standard functions of general quaternions symbolically

Mathematica can easily compute exponentials and logarithms of concrete quaternions: ...
6
votes
0answers
169 views

Does a running evaluation continue after the PC wakes from sleep mode?

Are there any issues with running a process on Mathematica, putting the computer to sleep, and then waking the computer sometime later? It seems to work just fine on my test process (appending data ...
8
votes
2answers
157 views

Issue with Mouseover within Geographics

When using Graphics, I can change the color of the object with the use of Mouseover. ...
1
vote
0answers
51 views

Is there any metadata-holding mechanisms in Mathematica programming similar to Java annotations?

I'm re-implementing some tools previously implemented in Java in Wolfram Language. Is there any metadata-holding mechanisms in Mathematica programming similar to Java annotations?
3
votes
1answer
144 views

Space around indices in Mathematica 10

When i write something like f(x_0) in traditional form mm puts white space around the index, so that especially the distance to the end parenthesis looks weird. In mm 9 I could reduce the issue by ...
0
votes
1answer
81 views

Matrix consisting of the matrices [duplicate]

I need Dirac Matrix in my work. They consists of PauliMatrix and ZeroMatrix, which is: ZeroMatrix:=IdentityMatrix[2]-IdentityMatrix[2] I define Dirac Matrix as: ...
2
votes
1answer
105 views

How to explain the behavior of Rule inside these functions [duplicate]

I'm trying to define a function that takes an expression and spits out a pure function involving a replacement rule of that function's variable. An example would be a function ...
1
vote
1answer
324 views

How to make a stereogram in Mathematica? (2)

Given a tiled background and a depth map, both of the same dimension, I tried to produce a stereogram using the following codes which was adopted from the method given by Simon Woods, but in a ...
50
votes
1answer
1k views

Is this 30% slowdown in Mathematica 10 due to DownValues lookup time?

Running several numerical self-programmed packages I realized already some time ago that Mathematica 10 needed between 20 and 40% more time. I did already report this of course with a simple example ...
7
votes
2answers
191 views

Dynamically transform one Graphics to another

I would like to have two Graphics objects displayed side by side such that: they are mirror images of each other if I change the left-hand one interactively using ...
11
votes
5answers
1k views

How to make a depth map from a 3D model?

Given a 3D .obj model, for example a rabbit. How can we make a depth map out of it? Any idea or help would be much appreciated.
5
votes
1answer
91 views

Edit built in symbol

I would like to add new attributes to built in symbols (e.g. ElementData or PolyhedraData) so that I can still call the symbol ...
4
votes
1answer
146 views

Generate a dynamic interface with sliders out of a list of rules

I would like to generate a function which takes a list of rules as input and generates sliders which are altering the values of the list. Then I would like to use this function in an dynamic module as ...
15
votes
1answer
536 views

Export dataset to JSON

I'm experiencing a weird issue. Consider a dataset defined like this: dataset = Dataset[{<|"a" -> 1, "b" -> 2|>, <|"a" -> 3, "b" -> 4|>}]; ...
9
votes
1answer
211 views

Median of Dataset in Mathematica 10

I'm having trouble calculating the median of a Dataset[] in Mathematica 10. The situation is as follows. Consider a dataset that was defined as follows: ...
3
votes
1answer
173 views

Extract data from WeatherData as a list of associations

Given weather data for 2013 and 2014 as follows: ...
0
votes
2answers
79 views

Solve simple differential equation - Error?

I get the error "The function Te appears with no arguments." when running this code. I'm not sure why. Is it because of the $Abs[\Gamma]$ ? ...
0
votes
1answer
88 views

naturalcolor stylesheet not working between linux and windows

I have encountered a weird problem with Mathematica 9. I have it installed on my laptop running Windows 7 and on my work computer now running Debian Wheezy. I am also using dropbox to access my work ...
0
votes
0answers
29 views

Use FindRoot solution as number in function [duplicate]

I would like to save a number that I gain with FindRoot so that I can use it in another function. I tried: ...
0
votes
1answer
203 views

How to plot data points in the form X, Y, E(X, Y) where X and Y coordinates are not ordered?

I have got a file with field values (RF simulation of a resonator) which consists of 3 columns: X and Y cartesian coordinates ...
3
votes
1answer
130 views

Can a Mathematica Application be inside another Application?

The file structure of a simple MMA Application can have the form: MyApplication MyApplication.m SomeAuxiliarPack.m Kernel init.m Where ...
6
votes
2answers
2k views

how to solve ODE with boundary at infinity

y''[x]-x y[x]==0 y[0]==AiryAi[0], y[infinity]==0 the analytic solution to this ODE is the Airy function y[x]=AiryAi[x] if I ...
1
vote
2answers
294 views

Error with “Newton's method” in Wellin's Mathematica book

In Wellin's Programming with Mathematica book, here's one of his implementations of the Newton method, where the iteration runs until the error tolerance is reached. ...
8
votes
2answers
235 views

How to unprotect a variable in a package

In Mathematica 9, I had the function(s). I apologize for the weak formatting. ...
5
votes
1answer
231 views

How to force mathematica v.9 and 10 notebooks to open in their respective front end

I have version 9 and 10 installed on Windows 7. if I double click to open version 9 notebook, then it opens in version 10, how I can force a notebook to open in its respective front end. I have ...
12
votes
3answers
354 views

Manipulate crashes after running 4 minutes

The following code generates the familiar 3D-plot: ...

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