# All Questions

2 views

### Suggested Settings for Mathematica over X11/SSH Tunnel

I am happy to discover that I can run a Mathematica session tunneled over SSH. However, as expected for X11 applications over the network, Mathematica's GUI does not have the responsiveness that I ...
28 views

### Add to the last digit a number

I have data from a Multimeter that has a precision of 0.6%rdg+4dgt. So i want to take the last digit of, say, 12.007 and add 4 to the last digit like ...
34 views

### Is there a bug in the Part function of Mathematica 10?

I am using Mathematica 10 now. I typed code below {{1, 2}, {2, 4}, {3, 6}, {4, 8}}[[;; , 1]][[1]] and this gives result 1 ...
50 views

### Order of eigenvectors

I have a matrix A = {{5, 4, 2}, {4, 5, 2}, {2, 2, 2}} The eigenvalues are 1, 1, 10 and I need to find the eigenvectors. ...
31 views

### Understanding Paste and how to get a string to use with ImportString

Trying to work on this question I got distracted by my first naive attempt of copying the data and then typing dat = ImportString[Paste[], "Table"] ...
45 views

### Importing High Precision (22 digits) data from a file

I want to import list from a file and I am using ReadList but my data is in format like this 8.2457409790900004e+08 but it i being imported like $8.24574*10^8$. Is ...
17 views

### Importing FITS file from HEALPix

I am trying to read FITS file created by HEALPix software. The file contains a spherical map of a scalar field. There is the online support on how to use the file in IDL, but not for Mathematica. I ...
49 views

### Timeline plotting: horizontal bars of time intervals

This text file logs the time that a process (identified by a number) changes state ("Brown", "Blue" etc.") ...
32 views

### 3D Contour Plot - parts with gradients less and more than zero

I'm trying to plot sections of the 3D Contours, with gradient less than zero, and more than zero and equal to zero. It manages to solve for the derivative, but when I apply the conditions ...
176 views

### How to create a neon light effect in Mathematica?

I tried to use Glow to create a neon light effect on a torus object. The result shown on the left of the picture below looks quite different from the real one on ...
18 views

### Can I convert a palette into a toolbar?

I have a simple cell editing palette that makes things like toggle "Editable" or "Initializtion Cell". I would like to make this become a toolbar, but cannot find anything that does it. The closes I ...
21 views

### Resume Parsing algorithm [on hold]

Which algorithm using for Resume parsing algorithm. for capture candidate name, skills,experience,..etc i have seen CKY algorithm for this problem.but i cant able to understand.some one explain how ...
40 views

### PDE with Stefan Conditions, a.k.a variable boundary

I want to solve the one-dimensional one-phase Stefan problem, but I don't know how to make Mathematica understand the conditions. If you are not familiar with what I'm asking please refer to this ...
20 views

### Matrix multipication [migrated]

Is this matrix multiplication is possible? Microsoft mathematics gives me a answer for it? How it could be a correct? If we need multiple two matrix, number of rows and columns should be equal. So how ...
41 views

### m equations and n variables. Reducing using Mathematica

I have six equations and thirteen variables. I would like to reduce it to seven free parameters. I used Reduce to solve it but it is taking really long (one full day and no output yet) and I think ...
186 views

### How to create an adjustable Bézier curve?

I tried to create an adjustable Bézier curve with the following simple code. However the curve didn't show up. What is the problem? Please help. ...
45 views

### ToDiscreteTimeModel fails following video

Following the systems-modeling video here at about 15 min, 20 seconds in, the presenter (Bob Sanhedrick, I think) shows a model for an "Asteroids-game"-like 2D spacecraft. The model is trivial: ...
84 views

### Use MATHEMATICA to calculate the volume of the solid [duplicate]

Use MATHEMATICA to calculate the volume of the solid that results when the region enclosed by the given curves is revolved about the x- axis. f(x)=Pi^2 Sin[x] Cos[x]^3, f(x)= 4 x^2 x=0, x=Pi/4
280 views

### Use Mathematica to calculate the area enclosed between two curves

use mathematica Hence, calculate the exact area enclosed by these curves using Mathematica. $f(x)=x^3$ and $g(x)=x^5 - 2 x^3 - 3 x$ i have got the graph...now I'm stuck with finding the area
142 views

### approximate value for the area between the curve

Use Mathematica to obtain an approximate value for the area between the curve $y=1/4$ and the x-axis over the interval $[1,2]$ with 50 subintervals using the left endpoint, midpoint and right ...
28 views

### Typing (and executing) expressions with multiple superscripts

I am trying to type (and evaluate) expressions of the following form: $$G^{a,b}$$ into a mathematica. I've tried the obvious G^(a, b) or ...
42 views

### Real and Imaginary parts of solutions to a complex linear ODE system

Consider a complex linear ODE system $x'=Ax$, where $$A=\left( \begin{matrix} 0&1\\ -2&-i \end{matrix}\right).$$ One can first find the eigenvalues and eigenvectors using ...
55 views

### What ProcessEstimator Options can I use with FractionalBrownianMotionProcess

I can generate an fBm process: ...
156 views

### Why PlotLegends doesn't give the legends ？

I am using Mathematica 9. The problem I have is with plotlengends, in particular, ...
400 views

### Graph and Markov Chain

I have the following code: proc = DiscreteMarkovProcess[1, {{0.6, 0.4}, {0.3, 0.7}}] Graph[{"A", "E"}, proc, GraphStyle -> "DiagramBlue"] How can I 'force' ...
45 views

### Finding minimum value of an integrated function over an interval [on hold]

I am novice user of Mathematica and I am stuck with this question. I have to find the minimum value for this expression. where x[1,3]. I figure that to find the minimum I just need to ...
40 views

### How to make DocumentationTools palette useable?

I am writing the documentation for my package using Wolfram Workbench 2. But when I open DocumentationTools under Palettes, I get this unpolished piece of junk: The top half is a total waste of ...
52 views

### Differential equations with a complex variable

Is Mathematica able to handle ordinary differential equations where the variable itself is complex? I am looking for solutions of ODE systems of the form \left\{ \begin{align} i\frac{da_1}{dt} ...
85 views

### Listplot imaginary part of complex numbers

I have the following list w={{0.01,99 +0.00001414 I},{0.15,6.6370108 +0.003144129 I},{0.25,3.9515722 +0.00854493297 I},{6,0.10041 +0.28132187 I}} and I want to ...
32 views

### Data acquisition from NI USB-6008, NI-DAQmx

I want to connect an interface from National Instruments to Mathematica in mac, i already download the driver Ni-DAQmx_Base_3.6 from NI page. How to tell Mathematica to dump data from the interface?
60 views

### Dsolve implicit solution to a Differential Equation [on hold]

I would like to know if there is a form that Mathematica can give me the implicit solution to an ODE. When I use Mathematica of Alpha it it always seem to solve it for y (the dependent variable) but ...
113 views

### Computing the Hurst exponent or fractal dimension of fractional Brownian motion

The Hurst exponent is related to the fractal dimension by noticing that the fractal dimension $D$ is equal to $2-H$, where $d$ is the intrinsic dimension and $H$ is the Hurst exponent, for 1-D ...
49 views

### Approximate the largest and the smallest values of the integral [migrated]

How do I solve this:approximate the largest and the smallest values of the integral for
59 views

### SyntaxForm not correctly parsed by FrontEnd

When using TagBox with SyntaxForm, I noticed sometimes it is not well parsed by the ...
61 views

### CPU usage remains at 13% even after I quit the kernel

I use Mathematica 10.0.0, and after I run it for a while (a few simple commands for example) the CPU usage (Mathematica.exe) remains at 13% even after the calculations are over. I quit the kernel but ...
72 views

### Import iTunes xml data and convert it into a dataset or table

I have an xml file with song data from iTunes (https://dl.dropboxusercontent.com/u/1012958/iTunes%20Library.xml) and I'd like to import it to Mathematica to do some statistics. I get an XMLObject like ...
244 views

### Plotting spherical surfaces

I am trying to make surface plots of squashed spheres. The spheres are defined by a list of points. For simplicity, consider the round sphere: ...
54 views

### Is this the correct method in using bootstrapping to determine a lower confidence bound?

Quite often in industry, due to cost and schedule constraints, decisions must be made on small sample size data. I have 4 cycles-to-failure values resulting from running samples to failure in a ...
408 views

### Set of integers not divisible by smaller set of primes

Let $p_n$ be the sequence of prime numbers, and $s(x,n)=$ the set of integers less or equal than $x$ that are not divisible by $p_1,\dots,p_n.$ I can define it as follows: ...
55 views

### Frame ticks not showing in ListLogLogPlot [on hold]

I want to make the following plot: ...
134 views

### VectorPlot differences between v9 and v10

The following code displays differently with v9 & v10: ...
87 views

### Advanced SQL-type select statements (filtering) on Datasets

I'm trying to improve on mathematica's handling of datasets. I'm currently writing this function that should do the following. Suppose I have a dataset with columns, e.g. ...
194 views

### Optimizing Monte Carlo simulation of a Pred-Prey model

My assignment and code As part of an assignment for one of my classes, I'm trying to run a "massive" Monte Carlo simulation in Parallel on the follow model: ...
138 views

### Plot one set of “x” with at least three sets of “y” in different scale

I'm sorry if the question is too obvious, but I haven't been able to find a straight answer for Mathematica. I have 1 set of "x" with at least 3 sets of "y" in different scales. I need to plot them ...
139 views

### I need to remove a line from a ParametricPlot

What happens is that when I make this ParametricPlot: ...
66 views

### How to evaluate integrals over matrices [on hold]

Is it possible at all to evaluate integrals with respect to a matrix (dA, where A is a matrix) in Mathematica?
97 views

### Is undocumented \.bd = ½ bad to use?

I want to use \.bd which leads to ½ as part of the name of a symbol in the front end (e.g. ...
28 views

### DelaunayTriangulation in Mathematica V 7.01.0 [duplicate]

I have a list of 2D point coordinates in the form of {...,{xi,yi},...} and want to make a triangular mesh for it. By using DelaunayTriangulate function in Mathematica V7, it gives me something that ...