# All Questions

39 views

### Label point on plot with image instead of text [on hold]

I can use this code to label my points with text. ...
38 views

### Function for importing and plotting data from excel spreadsheet

I know this must be a very basic question, but I could not find any answers. I need to create a function that: 1) imports data from an Excel Spreadsheet, 2) assign specific information from this xlsx ...
243 views

### PlotLegends won't generate automatically more than 15 labels in v10

Update: NOT fixed in v 10.1.0 (Mar2015) While testing the examples from this recent post, i've noticed a problem in V.10 with PlotLegends when it has to ...
103 views

### Incorrect use of Scaled causes crash

Update: Fixed in 10.1.0 (OSX) Bug introduced in 8.0 and persisting through 10.0.2 While playing with Scaled, I made a syntax error which caused a crash ...
22 views

### Find region given by Exists statement

I want to find, calculate its volume and visualize the following region most efficiently: $\Gamma^\delta$ = { $\sigma$: $\exists \sigma' \in \Gamma$ with $F(\sigma,\sigma')\leq 1-\delta^2$}, where ...
117 views

### How to use FontWeight options in Mathematica 10.x

I‘m using stylesheets to create customized styles for course materials. That includes using fonts like Gill Sans, and Helvetica (Neue). Up to MMA version 9, it worked. When switching to version 10, ...
50 views

### How to use Epilog with Tradingchart

I am making a Tradingchart with data returned from Financialdata. I find I cannot add a line to the chart by giving the option ...
102 views

### Simplify a composition of functions

How do I make Mathematica simplify, for example, (1-#&)@*(1-#&) into #&? ...
88 views

### TimeConstrained[Delete[Range[1],1]] causes kernel crash

Run these two samples of code here (AFTER SAVING YOUR CURRENT WORK): Do[ TimeConstrained[ While[True, Delete[{1}, 1]; ];, 0.1];, {100}] ...
22 views

### Barlegend with a different z span for ListDensityPlot

I would like to rescale the colors in a plot and to do this in the same way for the color bar. (So this enables me to have the color bar span a (z) range larger than than the data itself.) I got this ...
43 views

### Set fontsize using setoptions not working in DateListPlot

I'm trying to use SetOptions to set the global font size for DateListPlot plots. My problem is that this is not working. Event this simple test does not change the font size: ...
45 views

### How to get Mathematica to compile with target C?

I have been trying to compile some functions in mathematica with target C for speed. basically when I try: ...
63 views

### Sum over Binomials and Gammas

Given the function, ...
27 views

### Statistical significance test of FindCluster

I have a list of vectors which could be roughly divided into two clusters. The list is huge so I have to use RandomChoice[list, 20000] to speed up the calculation. ...
96 views

337 views

### Poisson PDE over a irregular region with FDM

The problem modeled by the Poisson PDE is related to the torsion of prismatic beams and I use the Finite Differences Method (FDM). I've managed to solve the equation over a rectangle region with ...
34 views

### why Accumulate performs siginificantly different for two data sets with the same structure and length [on hold]

I used Accumulate to calculate partial sum for two lists of vectors. These two lists have the same dimension (same number of vectors, and each vector has three ...
713 views

### Partition string into chunks

This seems like it should be trivial, but how do I partition a string into length n substrings? I can of course write something like ...
225 views

### First pair out of order

I would like to know how to efficiently determine the first pair of elements in a list that are not in order according to some predicate p. That is, list[i] > list[j] according to p, and i is the ...
1k views

### Finding a subsequence in a list

I have a list and I want to find (in this particular case the first) appearance of a any of some subsequences, of possible different lengths. None of the subsequences is a subsequence of each other. ...
162 views

Can I say this is a bad performance from the new V10 function SubsetQ? Here are some tests comparing it to ...
113 views

### How to define a function

How can I define a function which depends on a function of x? Something like this f[u[x]_,u[x]']= u[x]' + a [x] u[x] +b[x] I think I wasn't enaugh clear. If I ...
114 views

### ListLogLinearPlot for the whole real numbers

I have the followin data ...
122 views

### What's real analogue for FromDigits?

FromDigits only works for integer strings. What's its real-number analogue?
I have a complicate second order differential equation to solve numerically (too complicate to be posted). Unfortunately I do not know the behavior of the solution $\theta(r)$ near $r=0$ and I am not ...