12
votes
3answers
491 views

substitution rules excluding subscripted variables

Suppose I have an expression containing p,Subscript[p,1],Subscript[p,2],etc. I want to ...
2
votes
1answer
172 views

from complex function to a series

How can I express this complex function as a series? Log[ (1 - E^((I Pi (1 - a))/(b - a)) z)/ (1 - E^(-((I Pi (1 - a))/(b - a))) z) ] Where ...
3
votes
1answer
2k views

Evaluating double Integral

While trying to evaluate the integral $\int_{y=0}^{x_2}\int_{x=0}^{min(x_1,y)} n (n - 1) (1 - y)^{(n - 2)}dxdy $ , Mathematica does not seem to yield any results. ...
12
votes
1answer
220 views

Cell brackets on left side?

Is it possible to have the cell brackets on the left? I looked through the options and couldn't find anything, but maybe it's some kind of esoteric style setting or something. The reason I'm looking ...
16
votes
3answers
419 views

Notebook vs. DocumentNotebook; display a Notebook inline, like a DocumentNotebook

If you evaluate a DocumentNotebook[] expression in the front-end, it nicely displays inline, inside of an output cell in the current notebook: For my purposes, <...
0
votes
3answers
211 views

Evaluation in Manipulate [duplicate]

I have an expression assigned to a variable. For example: exp1 = a*x+b Now I would like to plot it using something like this ...
4
votes
1answer
88 views

Combination of CellPrint and PrintTemporary, or DisplayForm for Cells

I'm programmatically generating some formatted output that generates a cell in the form of a Cell[] expression. For instance, the output might be ...
4
votes
1answer
5k views

I want to draw a graph using a weighted Adjacency matrix

I have a weighted adjacency matrix as follows: ...
8
votes
1answer
831 views

Visualizing vector-spherical waves

This is a follow-up question to this one on visualizing vector-spherical harmonics. This time, I would like to visualize the vector spherical waves (including the radial dependence). The functions ...
4
votes
2answers
224 views

How can I write a Do loop that iterates over N iterators when N is not known a-priori?

For any positive integer $n$ which is not specified a priori, I can make $n$-tuple vector $v$ by v = Array[a, 1, n]. Now, given that $n$ is a positive integer which ...
5
votes
1answer
279 views

Solving an inequality that contains Log expressions

How can I solve the following inequality: Log[1/2 + c^2] > (1.4) (30^5) 2^(4.5) 9 (0.6) (2.8) (1 + Log[3]) (1 +Log[ Log[c + 1]]) ? I tried ...
6
votes
1answer
257 views

Does it make sense to ask for the color of a Graphics3D “voxel”?

Say I generate some Graphics3D object, e.g.: Graphics3D[{Red, Sphere[{0, 0, 0}, 1], Blue, Sphere[{1, 0, 0}, 1]}] Does it make sense to ask for the color of a "...
4
votes
2answers
2k views

Function returning Null along with other unexpected expressions

When I use some function, at the end along with the output I get some NULLs returned that I don't understand the reason for and are highly undesirable. For example, when I define the reversal of list ...
4
votes
1answer
392 views

AR(1) Process first term

I'm trying to generate a very simple AR(1) Process with Mathematica using the ARProcess[] function. The process must have the following format: $Y_t = \alpha + \...
6
votes
2answers
2k views

How to export results of an analysis in table format into MS word file

I'm working on a simulation study using Mathematica 8. At the end of the analysis I'll have a matrix of data containing my results (assume for three variables like x,y & z). I used these codes for ...
1
vote
0answers
264 views

How can I convert a plot to pdf or eps without errors?

Mathematica 9.0.1, Linux. I try to save a plot as a pdf. I tried four different options. In each case some errors appeared as blank space ( http://yadi.sk/d/h1koyDci4z3rc ). I also tried to save ...
1
vote
0answers
112 views

Does Graphics`Mesh`SimplePolygonQ[] work for you?

Graphics`Mesh`SimplePolygonQ is an undocumented function. I'm using Mathematica 7, and when I try: ...
-1
votes
1answer
2k views

How to set image DPI? [duplicate]

For publications usually images in TIFF format are required in high resolutions. Where can I change settings for images that are being saved (using RMB click "Save Graphic As..."), so I don't need to ...
0
votes
1answer
829 views

What is wrong with this Cobweb plot [closed]

Something is wrong with my cobweb plot code but I couldn't figure out where do the mistakes come from. So basically we have the iterative map $x_n == x_{n-1}^{2} - 3 \mu$. I would like to draw a ...
5
votes
1answer
516 views

How to asynchronously download 100000 urls in an efficient way

URLSaveAsynchronous can download one url page, how to download 100000 urls in an efficient way? And better to with an whole progress bar. I've downloaded 90000 ...
8
votes
1answer
173 views

Different behaviours of Default Argument

I don't really understand the behaviour of Default Argument. If I execute this command in Mathematica: In: {f[a], f[a + b]} /. f[x_ + y_.] -> p[x, y] <...
4
votes
1answer
358 views

CUDAQ[] returns False in version 9 while True in version 8

CUDA works in version 8 but not in version 9. Is there a way to fix the problem in version 9? I've installed the latest CUDA from the official website https://developer.nvidia.com/cuda-downloads
4
votes
1answer
97 views

Question about InputAutoReplacements

I have a question about InputAutoReplacements. ...
13
votes
2answers
635 views

Sharp background image in plot

How do I get rid of blurry transitions between pixels of the background image below. It's the fault of Texture[], previously discussed in this answer. I haven't ...
5
votes
3answers
799 views

Problem with extracting specific contour from a ContourPlot

I am trying to exctract contours of specific value (2.6*10^-6) out of a ContourPlot and measure their area. Below you can see the code. It is noticable that not all of the relevant contours showed in ...
5
votes
0answers
67 views

At what point should MLSetMessageHandler() be called?

I have an Installable MathLink program written in C. I would like to use a custom message handler. At which point in the C source code should I call ...
3
votes
2answers
199 views

Why don't these styling rules work when viewed in TableForm?

m = RandomInteger[{-5, 5}, {10, 10}]; m /. {x__, y_ /; y > 0} -> Style[{x, y}, Red] % // TableForm When m without style ,...
2
votes
1answer
2k views

Recursion depth exceeded

Below is my code for numerical solving of PDE with Crank Nicolson scheme. ...
1
vote
1answer
535 views

How to get a solution set of a nonlinear system of equations?

I'm trying to find the solution set of {x, y} variables for the following system of equations: ...
3
votes
1answer
253 views

Cannot solve system of linear equation sums?

I cannot get mathematica to solve: The problematic code: ...
3
votes
1answer
205 views

Resampling when using image as Texture

How to get sharp pixel boundaries with Texture? I'd like to have only black/white in the example below, no gray. ...
0
votes
0answers
36 views

Import/Export Cluster Object [duplicate]

I want to export and then import back in a cluster object from Agglomerate. After the import, the imported object does not behave as a cluster - for example, ClusterSplit does not recognize it as a ...
3
votes
1answer
265 views

Using single replacement rule to convert algebraic expression

I have been trying this problems for hours and cannot find any helpful clues. How can I convert $Sinh[3\theta]+Sinh[\theta]$ to a rational function of x given $2Sinh[\theta] = x-x^{-1}$ by using only ...
7
votes
3answers
2k views

How to type a capital 'E' in Mathematica 9 using 'ToExpression' and 'TeXForm'? [duplicate]

I am trying to use Mathematica's ToExpression[] combined with TexForm to type the Einstein's famous result: E = mc^2. Now this is dead easy in LaTeX, the code is: ...
4
votes
2answers
428 views

Beginner's question: Gap between FrameLabel and BarChart

I have a BarChart (Mathematica 9.0.1) ...
9
votes
2answers
143 views

vectorized operations is not efficient?

Consider the following example: ...
17
votes
2answers
492 views

How to create internally optimized expression for computing with high WorkingPrecision?

I have large dataset and need to fit rather complicated function on it with different values of one of its parameters (this parameter must be fixed in every fit). I use the ...
4
votes
1answer
303 views

Generating a list of all factorizations

What is the best way to generate a list of all factorizations of some number $n$? I'm quite new to Mathematica so this might be obvious. I have been trying some basic stuff with ...
2
votes
3answers
235 views

Why do these two different zetas produce the same value?

Zeta[-13] == Zeta[-1] == -1/12 Why do these two different zetas produce the same value?
1
vote
1answer
350 views

Solve this equation symbolically

I am trying to solve the equation for the quantity r = y/x symbolically: 3/y^4 == 3/x^4 + a/(x + 2 y)^4 with the requirement that we need to perform the ...
2
votes
1answer
326 views

Range of stability for iterative map

Using linear stability analysis, I would like to compute the range of stability of the fixed points and the 2-cycles of the following iterative map: $x_n = x_{n-1}^{2} - 3\mu$. Setting $x = x^{2} - 3\...
9
votes
3answers
726 views

The default bandwidth of the SmoothKernelDistribution function

I am researching the Silverman rule of thumb for bandwidth selection. Below is a sample of my code, from which it seems that BW=63 is close to the default parameter given by Mathematica (2 images are ...
3
votes
1answer
224 views

Indexing of Large Autonomous System of Equations for Use in NDSolve

I currently have a list of ~150 autonomous ODE's that I need to be able to work with using NDSolve. Fortunately I already have them formatted in plaintext, which ...
1
vote
2answers
676 views

How to create a 3D curved surface, given some discrete points in space?

I have some 3D point data and I want to create a curved surface with these points, and export the curved surface data (point coordinates) according to points density on the curved surface. How can I ...
1
vote
0answers
634 views

Nontrivial solutions of equation

Here, I have one problem in finding nontrivial solutions of a system of equations. I want to choose one variable, for example X1 and to get solutions of X2(X1) and X3(X1). It is not difficult when I ...
3
votes
0answers
154 views

Eureqa Client to connect to Mathematica under Windows

Does there exist a way to use Eureqa software with Mathematica under Windows? That is, is there a working client to connect to a Eureqa server?
6
votes
2answers
686 views

Correct behavior of lock file in hsqldb connection

I'm running in to some problems with generating a persistent HSQLDB and during some troubleshooting I came upon the following behavior. ...
1
vote
2answers
345 views

Doing vector manipulations on Mathematica

This is hopefully a simpler version of this previous unanswered question of mine. Let me just focus on the two expressions $F_2^{(s)}$ and $F_3^{(s)}$ given in A.3 and A.4 of page 19 of this paper. ...
2
votes
0answers
331 views

Why my Mathematica 9.0.1 wont work with some samples of Mathematica in Graph Theory?

Bug introduced in 9.0 and fixed in 10.0 FindMinimumCostFlow is introduced in 9.0. I updated my Mathematica recently to 9.0.1 cause the previous version was ...
2
votes
2answers
448 views

Strange Behavior of NDSolve

I am trying to evaluate the following ODE numerically: ...

15 30 50 per page