# Tagged Questions

Questions asking for a "big list" of examples, illustrations, etc. Please do not ask too many of these. Please do not use this as the only tag for a question.

6answers
243 views

### Replacing elements of a nested list by some value

I have a list of list ...
5answers
621 views

### Plot list of million points

I am working on large datasets of size $10\times 10^6$ and would like to visualize these in Mathematica, but they take lot of time to plot. How can I speed it up? I also want to save the plots as ...
3answers
71 views

### Take a list with the amounts of the random samples from another list while holding the index

I have a list called cant with some amounts of samples to take from the list community as follows: ...
1answer
114 views

### ListDensityPlot and ListPlot3D with big data [duplicate]

I have a large data set (512 x 512) and I have problems plotting it. ListPointPlot3D works fine But ListDensityPlot won't go through all the points (the same goes for ListPlot3D): Is there a way to ...
1answer
67 views

### How to discriminate Weatherdata latitude and longitude from a more detailed list

From this list of weather data how can I discriminate only latitude longitude for each station? For example from the following sample I would need only the coordinates: "50136","","Aoluguya|Mohe, ...
2answers
120 views

### How to partition three years of data into daily samples

I'm trying to find mean of temperature data list. The temperature data list has 3 hours steps which means I have 365*8=2920 temperature measurements per year. My data are temperatures of 13 years. ...
1answer
148 views

### Speed up Select on large list

I am running this on a very large list, it is important to notice that some times the dates in v occure several times, and I want the selected list to show the same amount. This produces the right ...
4answers
886 views

### Select a repeated element in a list

I want to select all elements that repeat 4 times in the list. I propose this code ...
1answer
109 views

### How to create 2k sized vector in k sized loop

I want to solve a system of simple differential equations. At some point I need to solve non-linear system of algebraic equations with Newton method. I would like to efficiently create a right hand ...
1answer
106 views

### Amount of k-sized not-duplicated subsets of subsets of pair with disitinct sorted integers

I have a list, L, of this kind ($n\in \mathbb{N}$): L=Sort[RandomSample[Subsets[Range[n],{2}],RandomInteger[{1,Binomial[n,2]}]]] S contains any k-sized subset ...
1answer
92 views

### Create huge RandomInteger list

For testing purposes, I'd like to create very large amounts of Random Integers, let's say between $-1000$ and $1000$. I'm using the usual ...
2answers
177 views

### How can I replace the general element of a geometric series with the sum of the series?

Consider the list mylist = {b(a/bc t)^r, a/b(b t)^r, a (c/d t)^r, ...} where a, b, c, t, etc., are real numbers between 0 and 1. I want to sum each term in the ...
1answer
121 views

### joining lists based on content

I have lists created by other processing steps, which are basically constituted by elements like this: ...
3answers
890 views

### Examples of (well coded) packages using custom notation

Which packages do you know of, that have the following properties: using custom notation (for input AND output would be preferable) well coded & designed (from your subjective perspective!)
5answers
928 views

### What is the complete list of valid Front End Tokens?

What is the complete list of valid Front End Tokens? Preferably, by version number.
7answers
3k views

### What are some useful, undocumented Mathematica functions?

There have already been some questions about some undocumented functionality in Mathematica. Such as (please add to these lists!) How can one find undocumented options or option values in ...