# All Questions

378 views

### Hatched Filling for ListPlot

I am plotting to data curves using ListLinePlot. I like the look of Filling, but this is going to be printed, so I want something both black and white friendly, but giving more definition and ...
300 views

### Replacing parts of a held expression with held parts of another expression

I'm applying the Trott-Strzebonski technique in order to replace inside a held expression. ...
284 views

### Is there a guideline about when to end expressions with semicolons?

Whether for nested Ifs or within scoping constructs like Module and Block, I never know ...
584 views

### Automatizing PSfrag export

I'm in the early phase of creating a Mathematica function (or package) that exports graphics such that they can be used with $\LaTeX$'s PSfrag. The goal Ideally, the function should take a graphic ...
808 views

### data clustering

I have some data set which i would like to partition into 3 groups a:set 1 b: set 2 c: background. I use FindClusters[] function but as you can see (after ...
260 views

### ShearingTransform and Dynamic

Background: I have a geometric transformation composed of a RotationTransform, ScalingTransform and ...
4k views

### How to change default notebook background color?

How does one change the default notebook background color?
375 views

### Generating hatched filling using Region functionality

Before v.10 came out there were several Q&A on generating hatched filling for Plot, ListPlot etc. In v.10 we have new ...
456 views

### Find intersection points with V10

My question departs from this one: Find intersection of pairs of straight lines but now I want to find the points with the new V10 Region-functions. ...
356 views

### Select cases from a list

I have a list in the form : {1,1,1,0,-1,-1,1,1,1,0,0,0,0,-1,-1} No I'm trying to select only those sequences which start with 1 have a zero (or many zeros) ...
331 views

### Get tab key to indent a block of code

Is there some way I can change Mathematica keyboard behavior so I could select a block of text/code, press tab, and the selection would be indented to right? Similarly, I would like shift+tab to ...
207 views

### What is the point of Refresh if Dynamic has an UpdateInterval option?

I haven't found an example where I can't get rid of Refresh[]: ...
156 views

### Is there a convenient/automatic way of uploading a notebook into SE?

This post discusses how to streamline the other way - extracting code from a fragmented and longish SE answer but I imagine a two-way workflow like: Fashion an answer/question in an SE-templated ...
1k views

### How to make a tight crop of a 3d plot?

I like Mathematica, but it's syntax baffles me. I am trying to figure out how to minimize the whitespace around a graphic. For example, ...
270 views

### How to plot a series using different colors depending on the y-value

I have a sequence of numbers ${x_1,x_2,\ldots,x_n}$. I would like to plot the sequence using ListLinePlot but use a different color depending on if the values $x_i$ are within $a_i<x_i<b_i$. ...
165 views

### Show graphics content in front of frame

Consider some graphics which spill over the plot range, like these: ...
72 views

### Using PatternSequence on its own in ReplaceAll?

Say I have this list: list = {0, 1, 2, 0, 1, 3, 0, 1, 4} and say I want to remove consecutive sequences of 0 and 1. I'd normally go for this: ...
156 views

### How to avoid CopyTensor in CompiledFunctions?

In a reply here Leonid wrote, “Compile can handle a number of higher-level functions, such as Transpose, Partition, Map, MapThread, etc. Most of these functions return expressions, and even though ...
583 views

### Workflow in the Mathematica and Workbench IDE

After visiting one of the Wolfram presentations, I started writing code for my number theory research project in Mathematica because I found it to be faster than Sage. I downloaded Workbench and ...
648 views

### How to position text labels automatically to not overlap other graphics elements?

I was plotting reciprocal frame projection using Locators for a point to be expressed in terms of both the original basis (also specified with ...
607 views

### How can I create a fountain effect?

Inspired by this (please use Chrome or Firefox), I tried to simulate it, but I couldn't do it. I'm not familiar with Dynamic. Here is my simple code: ...
176 views

### Vertex merging in graph?

Given a Graph such as the one produced with the following code ...
134 views

### CSS Selectors for Symbolic XML

Symbolic XML is a convenient way of managing XML in Mathematica, at least for casual use or small tasks. Here and elsewhere you can find examples of XML handling in Mathematica, including XSLT/XPath ...
501 views

### How to combine more locations (GPS coordinates inside one city) with Google map?

I have a list of GPS coordinates.E.g. GPSList = {{47.680800, 17.626446}, {47.681078, 17.627283}, {47.682759, 17.631810}}; I would like to crate a Google Map ...
460 views

### 1D quasicrystal: points on a line nearest to points on a lattice

I have a simple lattice / line manipulation: ...
678 views

### Can you apply the Cellular Automata function to a grid containing numbers?

Im attempting to simulate a simple evacuation model using cellular automata theory.My study aims to determine whether Cellular Automata can effectively represent how people would behave in a fire ...
278 views

### Add lines to 3D Plot

How can I add lines that demarcate the different regions of the following 3D plot: Plot3D[1/(1 + E^(-a - c)), {a, -8, 8}, {c, -8, 8}] To give you an idea of what ...
532 views

### High Contrast Syntax-Highlighting

I have a neurological disorder which causes me to have migraines if I look at a white computer screen. To combat this, I have put the following at the top of all of my Mathematica notebooks: ...
252 views

### How to generate nonperiodic tilings?

I need to generate nonperiodic tilings which are similar to the attached figure (kite-domino tiling). I was thinking the code is similar to the code for the Penrose tiling. However, that code is too ...
314 views

### Mathematica style guide?

I encountered this site today https://code.google.com/p/google-styleguide/ regarding the programming style in some languages. What would be best programming practices in Mathematica, for small and ...
305 views

### Connect neighbouring points as list of segments in 2 D

Context I am interested in connecting neighboring points in 2/3D as list of segments. I am guessing this is something within the reach of graph theory, which is well implemented in mathematica. ...
454 views

### Building a molecule viewer: aesthetic rotations

I am working on building a molecule viewer in Mathematica and am running in to problems with controlling rotation of the molecule (which is rendered as a ...
578 views

### Export to CSV is very slow - can performance be improved?

I have to provide data exports from Mathematica to CSV format and it is very slow compared to other formats as can be seen in the following table: JSON, 15 sec, 8.4 MB TXT, 23 sec, 5.6 MB XLSX, ...
6k views

### Quick Hessian matrix and gradient calculation?

I am absolutely new to Mathematica and I actually want to try implementing a little optimization method . Long story short assuming I have a predefined two-variable function f(x,y) I want to ...
115 views

### Are there any videos that show how different Mathematica expressions are evaluated?

Are there any videos that show how different Mathematica expressions are represented internally as object graphs and demonstrate how they are transformed during an evaluation? I am asking because I ...
208 views

### How can I create a colour image using raw black and white data? (FITS data cube)

I have a data cube containing pictures of a galaxy across a thousand wavelengths. I want to take the data for the image slides in the red and blue parts of the spectrum, and have them represented in ...
817 views

### Are there any “RLink” like projects, which enable the interaction between R and Mathematica?

I want to borrow the vast amount of packages of R. I know there was one but it is neither sold nor supported anymore. So are there any active open source projects for linking R with Mathematica? Thank ...
2k views

### Unsaved notebook is crashing: is there any way I can save the state of the MathKernel before I kill it?

So I'm in the middle of generating some plots and all of the sudden the frontend goes dead and I haven't saved my work. I'm using Mathematica 8 in MacOS X. The MathKernel process is still running and ...
699 views

### When to make (file.nb) instead of (file.cdf)?

I started with File > New > FreeCDF so I can save my work in a format compatible with the CDF Player. I can use Mathematica to make new cells, evaluate input and so in the CDF file. What are the ...
964 views

### Graph vs GraphPlot

What is the difference (in purpose) between Graph and GraphPlot? Which function is bested suited to which tasks? Background: I ...
3k views

Since PolarPlot doesn't support Filling, what is the best way to shade or fill the a region between two polar curves? For ...
576 views

### Using Transpose with a list as the second argument

I'm having difficulty understanding the Transpose function. I know what the transpose of a matrix is, not a problem, and I see that applying the ...
1k views

Inspired by the recent question about xkcd styled plots I started looking at xkcd again and I came across a comic titled Click and Drag. And if you do that, you start exploring a larger drawing. A ...
707 views

### How to visualize the voting choices in the moderator elections?

I'm trying to use Mathematica to create some visual representations of the votes cast in the recent Mathematica-StackExchange moderator elections. (Not the vote-counting system itself, OpenSTV, but ...
951 views

### Using the Krylov method for Solve: Speeding up a SparseArray calculation

I'm trying to implement this Total Variation Regularized Numerical Differentiation (TVDiff) code in MMA (which I found through this SO answer): essentially I want to differentiate noisy data. The full ...
648 views

### Change the color of a Locator in a Manipulate

How can I change the color of a Locator in a Manipulate? As an example, consider the following. ...
209 views

### “With” as part of the “Dynamic Interactivity Language”

I noticed that in Mathematica's Function Navigator With is listed as being part of the "Dynamic Interactivity Language". It is not the first (or even the fourth, ...
146 views

Usually h @@@ {f[1, 2], f[3, 4]} === {h[1, 2], h[3, 4]} but this is not the case when f is ...