1
vote
1answer
244 views

Plotting the results of NSolve as Horizontal Lines

Suppose I use NSolve to find the Real approximations to the intersections of two separate functions over some specified range: ...
4
votes
4answers
903 views

Visualizing Line Integrals

I have a plane curve $C$ described by parametric equations $x(t)$ and $y(t)$ and a function $f: \mathbb{R}^2 \rightarrow \mathbb{R}$. The line integral of $f$ along $C$ is the area of the "fence" ...
0
votes
1answer
220 views

List Density Plot

What are the axis label for a list density plot? I have it set up to create the plot for 2 columns from a data set I got from an experiment, I'm just unsure of what each axis is supposed to be.
3
votes
2answers
154 views

How to prevent Round with hided fractions

I found a strange behavior in Round. If we try: ToString[Round[4.811, 0.01], InputForm] we get: 4.8100000000000005 When I expected 4.81 In order to ...
1
vote
0answers
288 views

Help deciphering Neumann Value

Version 10 has an option for NDSolve called "NeumannValue" which is supposed to allow you to specify boundary conditions of the form $\vec{n} . (c \nabla u + \alpha u -\gamma) = g-q u$ but there is no ...
3
votes
2answers
194 views

Image Size using {w,h}

Mathematica help file says: "With ImageSize->{w,h} an object will always be drawn in a $w\times h$ region, and will be sized to fit in the region. " However: Doesn't look like "and will be sized ...
1
vote
1answer
97 views

Why mathematica is not default set to give real solution, instead of complex one? [duplicate]

N[(-8)^(1/3)] gives 1. + 1.73205 i. Since $(-8)^{\frac{1}{3}}$ has three possible solutions, one real and other two are complex. So, why do not mathematica provides all the three solutions, and if ...
2
votes
1answer
88 views

RegionUnion issues with many Regions

The new RegionUnion[] function is just what I needed if only I could get it to work. I have many non-overlapping regions that I will need to use as plotting domains ...
0
votes
1answer
29 views

Variable as Difference of 2 Variables

I would like to evaluate a function based on the absolute difference of two variables. An example: g=5*x-5*x*y-5*y diff=x-y D[g,x] D[g,y] D[g,diff] I cannot find ...
2
votes
1answer
132 views

`Export` to `.eps` ruins the formatting of subfigures

As a result of this question an issue of Export emerged. I.e., when I set my .eps figures with ...
1
vote
0answers
56 views

Is it possible to pipe the output of EvaluationMonitor to Excel?

I have an EvaluationMonitor setup to capture the points processed by NIntegrate. This is a case where the same function, integrated over the same region in cartesian coordinates yields a dramatically ...
0
votes
2answers
149 views

How to help MMA to simplify integrands?

MMA sometimes has to grind for LONG time on easy integrals: ...
3
votes
0answers
184 views

Capturing microphone data [duplicate]

How to capture current microphone data, just like using the function CurrentImage[] for capturing image? For example, this captures an image: ...
0
votes
1answer
298 views

Help solving the following non-linear differential equation

After spending several hours exploring different options, I still couldn't not figure out how to solve the following differential equations. Any suggestions would be highly appreciated. ...
0
votes
1answer
93 views

Different results for NIntegrate for the same function using cartesian and polar coordinates

This is probably a straightforward question. I have two functions f[x_,y_,z_] and g[r_, theta_, z_] where: g[r_, theta_, z_] returns f[ r Cos[theta], r Sin[theta], z]. For the same points in ...
0
votes
1answer
175 views

Plot Legends when first argument was generated by Table[]

I can get a plot to generate legends for different functions when these functions are put into a hand-coded list. However, when I generate the list of functions using Table[] only one legend is ...
4
votes
7answers
185 views

Get the position of the right interval

I have a list of intervals: Intervals = {{0, 1}, {1, 2}, {2, 3}, {3, 4}, {4, 5}, {5, 6}} and a list of measurements: ...
5
votes
2answers
148 views

Opacity renders lines incorrect in certain viewing angles

Trying to learn how Opacity works, I found a possible issue. Generating points in a square spiral with: ...
1
vote
1answer
67 views

DayRound Rounding Values:No difference between “Preceding” and “Following”?

On Mathematica 10.0.1 both DayRound[{1980, 2, 29}, "EndOfMonth", "Preceding"] and ...
-2
votes
3answers
281 views

Defining an alternative derivative function?

I want to calculate the derivative at a point, but I do not want to use the built-in derivative function D. I began with this definition of the derivative , ...
1
vote
1answer
183 views

In there a way to derive the inverse value of CDF format MultinormalDistribution?

Is there a way to produce the inverse value of multinormal distribution function in CDF format with 0.05 significance level? I found the function called ...
3
votes
3answers
174 views

Problem with a Markov's Matrix

I recently discovered the Markov process. To simplify my work, I use the following code taken from the DiscreteMarkovProcess documentation: ...
15
votes
4answers
869 views

Exclude data from a list

Let's create some random sample data data = Table[{RandomReal[{-10, 10}], RandomReal[{-10, 10}]}, {i, 1, 300}]; Then we plot them using ...
0
votes
1answer
245 views

Manipulate Slider Value on the Plot

Lets say I have a very simple manipulate in Mathematica given by: Manipulate[Plot[Sin[a x],{x,-2 Pi,2 Pi}],{a,0,5}] I want two things which I am unable to do: I ...
4
votes
2answers
126 views

Is there a way to accelerate buffering to the screen

I have an application that does a bunch of small computations, mostly Table management, and logic around loops. It takes seconds to execute. However, when I turn on debug (a variable I set for ...
0
votes
2answers
50 views

Suggest how to do this matrix multiplication [duplicate]

Have a look at the Mathematica calculation ...
2
votes
1answer
80 views

Button action preventing parallel execution?

I couldn't find a better title, so I'll jump straight to the example! There is this long list of slow jobs to be executed in a parallel way, at the press of a button: ...
0
votes
2answers
137 views
2
votes
1answer
557 views

Draw a region bound by a sphere and a cylinder

Here is my code for drawing the region bounded by the sphere $x^2+y^2+z^2=1$ and the cylinder $x^2+y^2=x$. ...
4
votes
2answers
240 views

Expand and collapse rows in a grid

Would someone have an idea on how to implement a table with rows that you can expand or collapse in a grid. An example could be found in a pivottable in Excel, for example here http://www.contextures....
2
votes
1answer
134 views

How to plot $\frac{x^{-2/3} e^ { \left(-\frac{x^{2/3}}{2}\right)}}{\sqrt{2 \pi 9}}$ for negative real numbers?

While trying to $\text{Plot}\left[\frac{x^{-2/3} e^ { \left(-\frac{x^{2/3}}{2}\right)}}{\sqrt{2 \pi 9}},\{x,-5,5\}\right]$ in mathematica, I was initially wondered (though mathematica's silence was ...
2
votes
1answer
57 views

Manipulate Plot with Controller being difference of two variables

I'm not sure if this is possible at all or whether manipulate is the best option to plot this, but currently I'm using the following code to plot Function Func vs. t values for different x values. <...
3
votes
1answer
211 views

Hermite method in Mathematica

When I solve the example below, in the results it is mentioned that Mathematica 10 has used the Hermite method. I cannot find anything about this in the Mathematica documentation. Is there nothing ...
6
votes
1answer
201 views

Returning computable numbers from WolframAlpha

WolframAlpha["Apple company revenue", {{"Result", 1}, "Plaintext"}] Desired output 182800000000 ...
8
votes
1answer
470 views

How to create a Poincaré disk type kaleidoscope in Mathematica?

Creating a kaleidoscope in Mathematica is not a new topic at all, examples can be found from the links like Wolfram reference and Wolfram demonstrations. My question is how to create Poincaré disk ...
3
votes
2answers
239 views

Spanning/centering elements with Grid/GraphicsGrid when there's a non-equal number of elem. in rows

I'm trying to align elements in Grid/GraphicsGrid: Grid[{{a,b,c},{d,e}}] This makes ...
1
vote
1answer
120 views

Problem solving a differential equation

I want to solve the following differential equation: y''[x]+a*y[x]=-b*u[x], y[0]==0, y'[0]==0 for y(x). u[x] is a vector, ...
1
vote
1answer
155 views

Insert a linebreak and character repeatedly into a matrix output which is in fortranForm

Suppose I have a very long string which is a11 element of matrix a11=2*gopsv-2*Bgopsvw+2*acgmops*v+2*cgmopsv*B-2*acgmopsvB+3*gmopsvB-3*BgmopsvwB+m*w2*B +5*acgm2 +opsvB -ac*m2*w2*B +cgm2*opsvB* - 3*...
1
vote
1answer
275 views

Plotting in Elliptical coordinate system

I want to plot an equation in elliptical coordinates. In the traditional elliptical system, Ellipse and hyperbola shares the same confocal point. Is there a plot function that draws a function in this ...
12
votes
3answers
264 views

Using 0 to create new columns in a list with Part

I just discovered a nice way to create intermediary columns in a list, and I would like to know if I can have some problem with it. It Works like this: Imagine I have this list, 5x3: ...
1
vote
0answers
46 views

How to show Output of matrix in FortranForm with “&” character?

I have a matrix. and i have shown the output of matrix one by one element in FortranForm. the problem is i want to put "&" continuation charater in output because when i am copying the data into ...
7
votes
0answers
202 views

Copy/Paste of quoted text crashing Mathematica 10?

(Mathematica 10.01 under Windows 7) Create two text cells and in each of them place the following text: <table align="left" style="margin-left:50px; border-collapse: collapse; padding: 0px; ...
2
votes
0answers
53 views

ListPlot with conditions Part II

In a previous post Part I @Julian S proposed an interesting method in order to segment the data. A copy of the data file can be found here: data. I know that I should provide a minimal working example ...
2
votes
2answers
382 views

ParametricPlot3D line not smooth

Multivariate parameters appear to present a jagged appearance of integrands (using default Runge-Kutta ODE integration intervals?) in ParametricPlot3D plotting on a single argument. Higher Mesh.. ...
2
votes
1answer
254 views

How to add “special” Ticks?

this is my code: ...
0
votes
1answer
329 views

Optimizing Chi-square distance between two distribution

I want to program the chi-square between two distribution Xu and Vu with length N. This function is defined as below: Xu and Vu are real and positive. ...
2
votes
0answers
87 views

TrigExpand Idiosyncracies

TrigExpand[Sin[x]^2 Log[y]] returns sin^2(x) log(y), as one would expect. However, ...
1
vote
3answers
272 views

How to get mathematica to show limit of a recurrence sequence?

I want to find the limit of a such a sequence: $f(n+1)=\sqrt{2f(n)-1}, \, f(0)=a, a>1$ How does one do this? Is it possible to have it show the solution algebraically, like it does with ...
8
votes
3answers
423 views

Multiple-colored regions on a Sphere in Mathematica

The problem: I would like to draw a sphere where the bottom half is one color, and the top half is split into 3 equal regions, each with its own color. I have come up with the following code, by ...
5
votes
1answer
131 views

Changing MathKernel process priority on the startup

In the built-in Documentation there is an example how it is possible to change the priority of the MathKernel process using NetLink: ...

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