1
vote
1answer
31 views

Transforming a CopulaDistribution only works with the Product Copula

What I want to do: 1) Define a joint distribution function using CopulaDistribution 2) then transform it with TransformedDistribution 3) to get the new Culmulative Distribution Function (CDF). The ...
5
votes
1answer
337 views

How can I plot a Chebyshev spiral?

The Chebyshev polynomials T_n of the first kind are a certain set of orthogonal polynomials. They can be defined by T_n(cos(x))=cos(nx), the first of them are T_0(x) = 1 T_1(x) = x T_2(x) = ...
1
vote
2answers
51 views

How to speed up recursive compiled functions?

I'm trying to speed up the recursive function that calculates Rotation numbers: ...
3
votes
2answers
81 views

Slow work of TimeSeriesWindow

I have financial data (list of time-values pairs). There are more than 13000 elements. ...
1
vote
0answers
108 views

Dataset Mathematica 10.0

I started to use the new funcationality 'Dataset'in Mathematica 10.0. ...
0
votes
1answer
26 views

Manipulate Discrete Values Labelling

I have 3 lists of plots (generated in other code), rawplots, weightplots,linearizedplots. ...
1
vote
4answers
87 views

How to plot a graph from it's incidence matrix?

I'm using Mathematica v9 and am trying to draw a graph by using it's incidence graph, but it won't draw it, which occurs an error "is not a valid incidence matrix.". But I've checked my matrix, and ...
7
votes
4answers
291 views

Computing the average over the values of the boxes surrounding a box in a grid

Recenty,I encounter a problem described as below: I have a table that owns many boxes,and each box has a sequence like 1,2,3,4,etc.In addition,every box has a value. Now I want to make the ...
1
vote
1answer
84 views

Generating and plotting hypocycloids [closed]

Hypocycloids are curves generated by following a fixed point on a smaller circle rolling around the inside of a larger circle. The following code is from the recent book of P. Wellin (with modified ...
3
votes
1answer
59 views

Factoring a differential equation into an operator product

Following the fundamental theorem of algebra, I can (as stated here in Sec. 1.1.4) factor an $n$th-order linear ordinary differential equation $$ a_n \frac{d^n x}{dt^n} + a_{n-1} \frac{d^{n-1} ...
2
votes
2answers
100 views

Harmonious graph labeling

Is it possible to harmoniously label a graph in Mathematica? I would like a function, that when given a graph, would return a harmonious labeling. If not, is there other software that can do it? A ...
0
votes
0answers
25 views

How should I state the interval of the variable? [closed]

I have a very complicate equation that consist of 4 variables: x,y,z,w. Now I want set this equation to zero, and solve its roots in terms of x: that is, f(x,y,z,w)=0, solve it in terms of x. ...
1
vote
0answers
92 views

Opacity limitations?

Trying to make a better-looking globe model, I start off with something like this To enhance the 3D effect, I want the lines further from the eye to be "grayer" than the lines closer to the eye, as ...
3
votes
1answer
44 views

How to return a string from LibraryLink?

I need to return a string from a LibraryLink function. The documentation states: When a string is returned as a result, the Wolfram Language accesses the memory to convert it to its own internal ...
2
votes
3answers
128 views

How to display the indices/element positions of a ragged array?

I have a three-level ragged array like so: ...
0
votes
1answer
34 views

How to refuse close de Dialog when press Enter Key

As you can see in the documentation of CreateDialog In dialogs created with CreateDialog, pressing Return is effectively equivalent to clicking the ...
1
vote
1answer
38 views

How to use a self-defined function in the Manipulate function

This is what I want Manipulate[ Plot[ Which[h < a, 1 - 1.5 h/a + 0.5 (h/a)^3, h >= a, 0], {h, 0, 8}], {a, 5, 10}] Is it possible to rewrite it ...
-1
votes
0answers
11 views
1
vote
0answers
50 views

Speeding up NDSolve for system of differential equations

I am wondering if there is a way to speed up this function that solves a system of ordinary differential equations with NDSolve? Thus far I've tried specifying a few different methods such as LSODA, ...
0
votes
0answers
48 views

No real number fitting double exponential in Mathematica

I am trying to fit a double exponential curve to my data, but I got the error saying there are non real number. Also I tried with starting values for my 4 parameters, but this does not work either. ...
0
votes
0answers
70 views

Dynamic content Aborts in Mathematica 10

I have written a notebook in v9 that contains dynamic content (a Manipulate). I just downloaded V10. If I double click on the notebook, of course it is opened by ...
4
votes
0answers
52 views

Possible bug: SparseArray Part assignment loses default value?

This sure looks like a bug to me (Mathematica 10.0.0, MacOS): ...
2
votes
3answers
90 views

Plot least squares curve on Linear Log Plot

I have the following Data: ...
0
votes
0answers
29 views

Getting NIntegrate::inumr: from NIntegrate [closed]

I tried to numerically calculate the following integral: ...
11
votes
1answer
169 views

BarLegend changes in Version 10

Apparently, BarLegend in version 10 displays tick legends in scientific notation when they are smaller in magnitude than 0.01. For instance, ...
0
votes
0answers
33 views

Shared variable impacting speed? [duplicate]

I am using a shared variable as a progress indicator ( via SetSharedVariable[counter] and then Dynamic[counter]), to keep track ...
3
votes
1answer
119 views

How to create a real-time dashboard in Mathematica?

I am trying to figure out how to use Mathematica as a real-time interface. I've used Excel/ODBC connection to a SQL database to use the graphing functions within to get my real-time dashboard. I ...
3
votes
1answer
51 views

Set number of columns in text-based interface

Is it possible to set the number of columns in Mathematica's text-based interface? Or disable word wrapping in the text-based interface ? Specifically, my concern is output from ...
2
votes
0answers
39 views

Why do EstimatedDistribution and DistributionFitTest work this way

I am fitting some time-series data to both a stable distribution and a normal distribution in order to assess the goodness of fit of each. Along the way I encountered the following confusing result. ...
5
votes
1answer
95 views

How to get the list of notebooks that are automatically opened when Mathematica starts?

How to get the list of notebooks that are automatically opened when Mathematica starts programmatically? I know a tedious approach is opening option inspector and finding and copying the list out.
0
votes
1answer
34 views

Timing enclosed by Manipulate not working [closed]

Manipulate[Timing[Show[somegraphs[[1 ;; i]]]], {i, 1, 500, 1}] (in Mathematica 8) This is the last line of my function f[x_]:= Module[....]. I am trying to combine a list of graphs into a single ...
1
vote
2answers
107 views

How do I plot points on a sphere using spherical coordinates?

Currently, I have a matrix containing a list of spherical coordinates. Column 1 is r; r=1 for all points. Column 2 is theta and column 3 is phi. Each row is an ordered triple (r,theta,phi). Is there a ...
5
votes
3answers
367 views

Detect each polygons in an image

Considering this image: Is there a way to colorize each tiles independently? My problem is that img = Import["http://i.imgur.com/Y87duSz.jpg"]; Colorize@img ...
4
votes
0answers
40 views

Changing mouse appearance at notebook level

Ideally, I'd like to change the mouse pointer appearance(s) at notebook level, from a styleseet. However, I'd be satisfied only by changing its color. This is the main issue keepeing me away from ...
0
votes
2answers
57 views

Control Manipulate variables inside Manipulate

I have the data for graph nodes as: ...
1
vote
1answer
47 views

Numerical solution NDSolve for SIR model [closed]

I'm trying to numerically solve the SIR model. This should be simple but I'm can't understand why this is not working: ...
9
votes
2answers
307 views

Changes to colouring in Mathematica 10

I'm putting my new copy of Mathematica 10 through its paces and I noticed a weird change in the colouring scheme that I find very annoying, and I'd like to get some insight into why it's happening. ...
2
votes
2answers
187 views

Defining a sequence slot programmatically

This question is related to: Composition of functions using slots `Slot` (#) interfering with evaluation Consider a toy example: ...
6
votes
3answers
155 views

Strange behavior of MemberQ, Position

After importing an array of latitudes and longitudes and trying to find the position of some latitudes I was encountered with an unexpected problem since certain values could not be found for some ...
-3
votes
1answer
78 views

My code is not converging using NIntegrate. Why? Help please [closed]

I have been trying to see why this integration is not converging but to no avail. The output gives only the y-values but fail to give any real value for x-values. Rather I always have something like ...
4
votes
3answers
372 views

What is the right way to write a function that includes other functions?

I want to include multiple sub functions: $b(x) = 10x$ $w(x) = s + b(x)$ $c(x) = x^2$ into two main functions: $ua(x) = w(x)-c(x)$ $ub(x) = w(x)-c(x)^2$ As a reaction to this answer, I wrote ...
3
votes
1answer
58 views

Dataset and string conversion, using Internal`StringToDouble

i'm trying to get familiar with the new Dataset-stuff in Mathematica 10. As it will (hopefully) provide some benefit for me, I have started to convert my app to move from list and list of rules to ...
4
votes
1answer
91 views

Mathematica package for supergravity and superstring theory

I am looking for a Mathematica package that can manipulate tensors for supergravity, string theory or M-theory. I am particularly looking for a package that can do spinor and Clifford algebra ...
8
votes
1answer
185 views

Why is SparseArray and InterpolationFunction always grayed out?

In the front end of Mathematica version 10, a new feature was implemented which dims output cells that no longer correspond to its input cells. So when you type ...
3
votes
1answer
85 views

What kind of object results from RegionIntersection function?

I'm trying to use RegionIntersection in a couple of Polygons. The polygons are the following: ...
3
votes
0answers
35 views

WSTP Callbacks into CDF

Essentially, what I am trying to find out is the limitation of the WSTP/LINK protocols in Enterprise-licensed CDF. Specifically, are any callbacks to the kernel from those protocols allowed in CDF , ...
4
votes
1answer
143 views

Mathematica 10 doesn't support path containing Chinese characters

I tried to import file in Mathematica 10 ( windows 7 system), the path contains some chinese characters. After holding ctrl+shift, and drag the file into front end. I got path like ...
3
votes
0answers
86 views

Software for effectively modeling gears

Are then any applications for effectively modeling gears in mathematica?
19
votes
1answer
2k views

Mathematica 10 funny bug / Easter egg?

I have no idea what is happening here. I'm using Mathematica 10. I mistyped "FriendNetwork" as "FriendsNetwork" and got a weird result: The option "FriendsNetwork" is not even listed in the help ...
1
vote
1answer
80 views

Ploting legends in contourplot

In Mathematica 8. Given this: ...

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