# All Questions

2answers
123 views

### Appearance in Checkbox does not work

I'm experiencing strange behavior in Checkbox with Appearance: ...
1answer
296 views

### Partial differential equation: unexpected result from changing boundary region size

I am trying to solve a PDE for heat diffusion, but I have a problem with the boundary region. When I change the boundary region size, the estimation of temperature increases even when no other ...
2answers
79 views

### Extract a List of Co-ordinates from a List of Complex Solutions

Let's say I have this list of solutions from a previous computation: ...
1answer
127 views

### How to grab CellTags from a Cell?

I am in the process of creating a palette for a specialised "Save as HTML". For context please see this. How can I grab the CellTags from a Cell[...] object? This is my first iteration, aka testing ...
1answer
162 views

### How can I create some shorthand notation for a custom control?

Per this question, I have created a custom graphical control object which evaluates to a list of values. I would like to be able to create such an object quickly, rather than typing some command, ...
0answers
119 views

### Unicode beyond Basic Multilingual Plane

String manipulation takes a dive when characters beyond \:FFFF are used e.g. Mathematical Alphanumeric Symbols. The characters display fine but doing string ...
4answers
2k views

### How to generate and draw simple bipartite graphs?

A bipartite graph is a graph whose vertices can be divided into two disjoint sets. Given two lists: {1, 2, 3} and {x, y, z}, ...
1answer
140 views

### How to generate new random numbers in a Manipulate only on demand?

I was playing with a Manipulateto visually compare calculating the mean of Normal and Cauchy random data. ...
1answer
493 views

2answers
1k views

### Finding distribution parameters of a gaussian mixture distribution

Short version: how to estimate the parameters of a mixture of multivariate normal distributions (i.e.: Gaussian mixture model)? Long version. I am trying to estimate the parameters of a mixture of ...
2answers
1k views

### Reading in scientific notation from C++ to Mathematica

With a text file with entries formatted as (output from C++): f[38.67] = -2.5387862698183892298317350539374412777263289550697e-05; ⋮ Is there a way to read this ...
4answers
2k views

### How to draw Fractal images of iteration functions on the Riemann sphere?

Prof. McClure, in the work "M. McClure, Newton's method for complex polynomials. A preprint version of a “Mathematical graphics” column from Mathematica in Education and Research, pp. 1–15 (2006)", ...
0answers
69 views

### Export expression to Matlab [duplicate]

Possible Duplicate: Is it possible to export the equations from Mathematica to MATLAB? I like to export a Mathematica expression like.... ...
1answer
217 views

### Problem with function as an argument

I want to write a function like the following: s[u_, v_, x_, val_] := u[val]/NIntegrate[u'[x] v[x] + u'[x] v'[x], {x, 0, 1}] So I can evaluate something like ...
0answers
210 views

### Notebook manipulation to “Save as (HTML)”

In a previous question, I said that I wanted to display code as text in "Save as (HTML)". I am closer, but would like to ask the community for a better approach by telling the whole picture. I did my ...
5answers
252 views

### Construct an infix operation from a list

Inspired by this question, if I have a list {a, p, b, q, c} where p and q are binary ...
2answers
134 views

### Prevent front-end from reformatting long fractions while editing

I am editing an expression containing wide fractions (typeset with fraction boxes): But if, while editing the equation, the fraction exceeds some threshold (seems to be approximately the window ...
3answers
151 views

### Mathematica Basic Plotting Question

Is it possible to plot y = x^2 and x = y^2 on the some graph? For some reason, I can't get it to plot the ...
3answers
2k views

The basic multivariable Taylor expansion formula around a point is as follows: $$f(\mathbf r + \mathbf a) = f(\mathbf r) + (\mathbf a \cdot \nabla )f(\mathbf r) + \frac{1}{2!}(\mathbf a \cdot ... 6answers 1k views ### Insert +, -, \times, /, (, ) into 123456789 to make it equal to 100 Looks like a question for pupils, right? In fact if the available math symbol is limited to +, -, \times, / then it's easy to solve: ... 1answer 223 views ### Export image data precision I'm sure there is a very easy way to control this, but I have been searching for an hour now without luck. I plot a function and export it to get a table that I can use in TikZ. ... 1answer 325 views ### How to plot X and Y data to see average data converging? I initially have ran a large, say 1000 (to be changed later) number of monte carlo simulations (mcRun), and I want to see when the average data result starts to converge to a reasonable value. So I ... 2answers 718 views ### Dashed line with alternating colored dashes I am doing a plot where I have multiple shaded regions, and I want the line that separates the two regions to be dashed with dashes being alternating colors (so the demarcation stands out from both ... 1answer 153 views ### Optimization of correlation calculation How can I make the following line of code run faster? Is there a way to do this calculation as a matrix vs vector than vector vs vector? In the code below, f is a ... 2answers 454 views ### Why Can't Mathematica Integrate this? I have the following problem from a textbook I am trying to integrate: So, following the directions in text, I am required to integrate each function. However, I cannot get Mathematica to integrate ... 2answers 214 views ### How to create InterpolatingFunction from data? If I have a function at a number of non-uniformly spaced data points: youtReal[7.8]=2.0332;, youtReal[8.54]=6.24352354;.................. ......... and the ... 0answers 224 views ### Why does OS X need permission to allow JLink connections each time it starts? I understand that JLink loads each time Mathematica launches or each time a kernel starts, and that this can require permission from the firewall, if it is enabled but OS X provides settings the ... 1answer 207 views ### generating pdf using UseFrontEnd I run mathematica on a remote server and run it in batch mode using /math -noprompt -script 'scriptname.m' & Now, I use ssh -X to connect to the server. The server is linux based and my computer ... 2answers 435 views ### Replacements/Substitutions in Mathematica I am a new user of Mathematica and have some questions about the simplifications of calculated expressions. I am unable to attach an image of the session, but my Mathematica commands are: ... 0answers 645 views ### Automatically sending to Print (using CutePDF Writer) I use CutePDF for creating PDF output, but this requires manually selecting Print (Ctrl+P), with CutePDF Writer as the printer, and pressing OK. Can this be automated? 1answer 358 views ### Setting default Mathematica version Is there a way to set the default Mathematica version? I would like to run both versions 7 and 8 (on a Win7 PC), but when version 8 is installed it takes priority. Clicking on a notebook ... 1answer 212 views ### Problem creating MeanPredictionBands I have a problem creating MeanPredictionBands for my function which I fitted using NonlinearModelFit. I have a complex-valued ... 2answers 729 views ### Import Fortran unformatted binary I have an unformatted binary file generated using the Compaq Visual Fortran compiler (big endian). Here's what the little bit of documentation states about it: The binary file is written in a ... 2answers 2k views ### Machine learning. SVM algorithm I want to work with machine learning in Mathematica. Are there any SVM algorithms implemented in Mathematica anywhere? Or any other algorithms for machine learning? With positive and negative database ... 1answer 327 views ### Fix end point in smooth kernel distribution density I am using some extreme value fitting method which results in a parametric distribution for values exceeding some threshold, all values \geq 0. For smaller values I'd like to use a smooth kernel ... 3answers 616 views ### Multi-Factorial and Series with Triple-factorial terms Let n!^{(k)} denote a multi-factorial which is defined by$$ n!^{(k)} = \begin{cases} 1 & n \leqslant 0, \\ n, & 0 < n < ...

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