All Questions

0
votes
0answers
35 views

Comparing heavy tailed and non-heavy tailed distribution using Mathematica

I have data from a heavy tailed distribution (see picture 1) and a non-heavy tailed distribution (see picture 2) and want to compare it using a histogram on log-scale. However the picture 3 does not ...
5
votes
3answers
157 views

Plotting jump function without vertical lines

Consider this list plot: ListPlot[{{0, 0}, {1, 2}, {3, 4}, {4, 2}, {6, 0}}] I want to draw a jump function in this list plot such that for each point I get a ...
1
vote
0answers
46 views

Position ticks labels at the other side of the axes [closed]

I use ticks label both for scale (0.8, .9, 1.0, ... ) and for marking specific values of interest (with custom text). I'd like the numbers to be above the axis and the text below it. I was able to ...
3
votes
2answers
63 views

BarChart rasterized in EMF export

My boss wants several Mathematica graphics as vector graphics in EMF format. All my plots are exported neatly, except for a BarChart which gets rasterized for no apparent reason: ...
0
votes
2answers
73 views

Symbolic matrice or vectors in Mathematica?

Suppose I would like to define an expression, containing and array or matrix of symbolic elements. Like this ...
2
votes
1answer
51 views

Is there a way to show some “weighted” residuals after LinearModelFit?

I am fitting some functions to some data and then I want to analyze the residuals of that fit. I'd like to see how those residuals compare to the values of the original data, hence my "weighted" in ...
0
votes
1answer
43 views

Computing a binomial series

I have a simple question: how to compute the following series? Sqrt[1000000]/4^1000000 NSum[Binomial[2*1000000 - 1, 1000000 - k]/((2 k - 1)^2 + Pi^2), {k, 1, ...
4
votes
1answer
50 views

Create group from multiplication table

Suppose I have a multiplication table for a group. For example, m = {{1, 2, 3, 4}, {2, 3, 4, 1}, {3, 4, 1, 2}, {4, 1, 2, 3}} I would like to create a group from ...
0
votes
0answers
22 views

Why does Mathematica play midi that bad?

When I import a midi file,then play it in Mathematica 10,occasionally the sound is very disappointing! There are no problem when I play it in KMPplayer... The sound's volumn is sometimes very small ...
5
votes
0answers
72 views

A new tag for MMA or list of published articles which used Mathematica [migrated]

I can imagine that many of the users of this website are PhD students in various research fields. I would like to have a list of published articles which used MMA to get their results or used MMA to ...
0
votes
2answers
90 views

How to draw the following plot in mathematica? [duplicate]

I have a function (x^2-9)^2. I can plot it with x-range{-3,3} so that three extremum s can appear in the plot. I add another axis y ranging{0,10}. I want to plot the previous function (x^2-9)^2 at ...
4
votes
3answers
175 views

Changing the atom color for plotting xyz-files

Mathematica takes the standard color code for atoms when plotting an xyz file, but I want to customize the color for the specific atoms. I really become desperate as I did not get it so far. ...
2
votes
1answer
174 views

Image processing: Line detection on paper images

So I have some Beta Radiographed papers and all of them have some vertical lines. What I am trying to do is write an automatic code which detects these vertical lines in almost all the images. The ...
1
vote
0answers
32 views

MacDonald formula for Modified Bessel Functions

Mathematica seems to not know these two integrals: $$\int_0^{\infty} e^{-x \cosh{\xi}} d\xi = K_0(x)$$ $$\int_0^{\infty} e^{-\frac{1}{2} \Big( \frac{x y}{u} + u \frac{x^2+y^2}{x y} \Big) } K_{i t}(u) ...
2
votes
0answers
22 views

How we could accurately visualize the page borders in printout Environment?

I usually work with Printout Screen Environment because I save the files in pdf format. One of my biggest problem is that I have no idea where the pages end! When I use Show Page Breaks I don't take ...
5
votes
1answer
63 views

Enumerating tuples from a larger space such that all pairs of values are present at least once

I am trying to write a function that will accept a list of N lists and returns a list of N-tuples that represent all pairs of values from the original N lists at least once. To illustrate with an ...
0
votes
0answers
12 views

Encountering a Tag times Protected error, but cannot find the source [duplicate]

I am very new to using mathematica, and I have seen these errors frequently. Usually I can find a solution to my issues by stumbling around, but this is my first time defining a function like sp[t_], ...
1
vote
1answer
77 views

Is there an inverse function for F[x] = {Cos[x], Sin[x]} in Mathematica?

Mathematica has functions ArcCos, ArcSin, and ArcTan, but none of these does what I need, ...
0
votes
0answers
27 views

How we can make a simple pallette to change the Font characteristics?

I am trying to make a new Palette with some buttons on it called, for example, "Arial", "Bookman" etc. plus some other buttons specifying sizes(12,14,..) and some prefered Colors for the fonts. I ...
5
votes
1answer
265 views

How to solve this probability symbolically or numerically?

I am trying to calculate the following probability $$\mathbb{P} \big(\sum_{i=1}^{m} (A_i + S_i) \le L < \sum_{i=1}^{m+1} (A_i + S_i) \big)$$ where, $$A_i \sim \exp(\lambda), \quad S_i \sim ...
6
votes
2answers
162 views
+100

How to do algebra on summations of variable expressions?

Is there any easy, general way to handle algebra on variable Sums? For examples, Gaussian Mixtures or Fourier Series: ...
2
votes
1answer
44 views

Sort a vector of vectors of vectors

Let's hope I'm calling it well, I have this vector, or matrix, now I really don't know what it is ...
2
votes
0answers
32 views

Find d'Alembertian in the output and convert into Einstein summation convention form

I am trying to do field variations in Mathematica and would like some nice formatting. My output is in the form $ -\frac{1}{c^2}V^{(1,0,0,0)}[t,x,y,z] + ...
1
vote
0answers
48 views

Displaying a matrix as an array of solid rectangular blocks [duplicate]

I would like to plot an array of numbers as a surface, with each number the height of a square, and with the squares connected to adjacent squares with vertical rectangles, up or down as appropriate. ...
1
vote
2answers
85 views

3D Probability distribution

I have a structure like this: ...
0
votes
2answers
59 views

Why Mathematica cannot tell if Sqrt[Abs[u0^2 + v0^2/b^2]] is positive?

In the code below I was careful to declare all variables as real and to use Refine. Still, Mathematica cannot tell that a sum of squares is a positive number. What am I missing? Thanks to ...
3
votes
2answers
58 views

How do I add Hyperlinks to usage text?

I want to include a Hyperlink inside of a usage. For example: ...
2
votes
3answers
128 views

Plotting a plane using intercepts

I have a plane 2x + 5y + z = 10. I have determined that its intercepts are: x = 5, y = 2, z = 10 I need to use ...
2
votes
2answers
87 views

Speed up ContourPlot

I created the following code, but the contours are drawn slowly with the movement of the slider, could you advise me how I should optimize the code? ...
1
vote
1answer
54 views

Manipulate - Evaluating Value of Function

I would like to visualize the properties of a threshold, which is a value of a function. Unfortunately, the value is expressed as scientific value (an approximation with 3-5 decimals would be fine) ...
0
votes
1answer
38 views

Manipulate using DateObject

My question is about making a animiation using 'manipulate' using DateObject as parameter. I start with importing a file.txt, like: ...
1
vote
1answer
101 views

Why is ((v k)^-n (k v^n - v k^n))/(n - 1) == b so hard for Mathematica to solve (for v)?

I've tried using both Solve and Reduce. For something that takes maybe 3 minutes to solve with paper and pencil, I'm very ...
0
votes
0answers
57 views

problem using FourierTransform

I'd like to make a fourier transform of equation: ...
1
vote
1answer
105 views

Country density plot of lines (highways)

I love solution from question (histogram as well as distrubution) http://mathematica.stackexchange.com/questions/31948/show-density-plot-on-us-map#=. But both cases are a bit more difficult in my ...
2
votes
1answer
76 views

thicker axes in 3d plot

I am new to Mathematica, and am not able to figure out how to make the axes in a ListPlot3D plot thicker. For some reason assigning a larger value to FontSize doesn't do anything. Would appreciate any ...
-2
votes
1answer
29 views
0
votes
1answer
48 views

ListContourPlot3D won't plot

According to the MMA 9 help: ListContourPlot3D accepts input as {{x1,y1,z1,f1},..........} and at position ...
3
votes
1answer
69 views

How to evaluate differential entropy from raw data?

I want to evaluate the differential entropy according to here $$h(X) = - \int f(x) \log{f(x)} dx$$ where $f$ is the probability density function. Lets create some test data (normal distribution): ...
1
vote
1answer
51 views

Different distance in .jpg plot and .eps

I noticed that when I run my code to draw a plot: ...
1
vote
0answers
24 views

Greek symbols are all bold in MM 10 over Linux [duplicate]

I upgraded recently to Mathematica 10, on a Linux system, and I'm quite annoyed to find that all the greek symbols automatically show up in bold: I suspect the issue is some missing font somewhere ...
5
votes
2answers
72 views

How to write Mma notebook input that modifies itself?

Is there a straightforward way to reference and modify a cell from within itself? This is a little outside the ordinary use case and certainly not good practice, but I would like to execute an input ...
0
votes
1answer
39 views

Distribution of block maxima of gaussian random variables

I try to verify the following result of extreme value statistics that the distribution of the block maxima of Gaussian random variables converges to a Gumbel distribution. To this end, I first ...
4
votes
2answers
136 views

Ploting transition dipole moments in a 3D structure

I want to plot the transition dipole moment vectors on their respective position. For example one transition dipole moment have a position vector like R now at this ...
3
votes
1answer
201 views

Pie/doughnut chart smarter labeling

There are numerous options in Marthematica for pie chart labels positioning: ...
0
votes
0answers
49 views

Distance between ticks and axes

I draw a plot which looks like below Is any way to increase the distance between ticks and axes? I mean, from my point of view, the ticks below the x ...
2
votes
0answers
44 views

Draw segment in arrayplot and get intensity value and coordinates in segment

I want to segment an arrayplot donut in to 6 pizza slices and export per segment the coordinates and intensity values of the pixels inside of it. I found a good example, which used RegionMember to ...
0
votes
0answers
44 views

Is this answer is true?

I was using Mathematica to get the series solution for Legendre equation. But when I get the recurrence relation and use RSolve: ...
1
vote
1answer
32 views

Easy way to perform multiplication of two 2x2 matrices, that contain list elements?

I have two 2x2 matrices, which elements are lists (so overall structure can be complicated). I need to perform matrix multiplication of these 2x2 matrices as if the elements didn't have its inner ...
-1
votes
0answers
78 views

Using Mathematica in better way? [duplicate]

this is general question about mathematica. We all know when we use mathematica, it does work by ...

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