# All Questions

152 views

### Express block matrix in terms of matrix basis

I'm trying to construct a function that returns the multiplication table of a matrix Lie algebra. Assuming a basis of matrices, my definitions: ...
149 views

### How to do a Check for every element in the list?

I know how to do a Check for the list in general: ...
170 views

### How can I stop Mathematica from omitting Axes on a Plot?

I'm trying to plot something using Plot[], and Mathematica keeps leaving off one of the axes. I can set Axes->{True,True}, ...
72 views

### How to “de rationalize” a number? [closed]

How can 1/2 be represented as 0.5? Thanks!
52 views

### Different behaviour of Map and Inner in replace rules

Why does x[{1, 2}] /. {x[l_] -> Map[func, l]} {1, 2} not behave as expected, while for example ...
165 views

### How to split list to strings?

Considering a list: lst = {"1", "2", "3", "4", "5", "6"} How can I have two strings : str1 = "1, 2, 3" str2 = "4, 5, 6" ...
70 views

### ResamplingMethod -> None in TimeSeries does NOT take any effect in v10.1

Possible bug in v10.1 ResamplingMethod -> None in TimeSeries does NOT take any effect in v10.1. Try: ...
150 views

### Add elements of one list to sublists of another list [duplicate]

I have the following list of sublists with different lengths {{1,1,1},{2,2},{3,3,3,3}} and a second list {4,5,6}with the same ...
78 views

### Is there a way to Collect[] for more than one symbol in Mathematica 10.0?

This question has already been asked three years ago (Is there a way to Collect[] for more than one symbol?) but I'm not allowed to comment since I'm new at Mathematica StackExchange. The first ...
439 views

### Efficient way to perform local Otsu thresholding on image

I have images of cell nuclei that have locally varying intensity distributions. Therefore, I need a robust local threshold algorithm. LocalAdaptiveBinarize works ...
452 views

### Bug in MovingMap (breaking change between version 10.1 and 10.0.2)?

The MovingMap window spec has been changed between version 10.1 and 10.0.2. Version 10.0.2 ...
371 views

### How to generate a random, relatively prime number to p?

I'm sorry if this is an obvious question, but I'm a newbie and googling didn't help me much. Is there a way in Mathematica to generate a number q coprime with ...
84 views

### calculate variance of conditional sum of Normals

Let $\quad W \sim N(\mu_0, \sigma_0^2), \quad X_1 \sim N(\mu_1, \sigma_1^2), \quad X_2 \sim N(\mu_2, \sigma_2^2)$ denote independent random variables, and let $c$ denote a constant. I want to find ...
104 views

### 3D scatter plot with labels [closed]

I am doing 3-D scatter plot with labels and using the following code ...
124 views

### Combining memoization and SlotSequence

I found myself writing memoizing code like this: ...
361 views

### How do I plot a filled cylinder in 3D?

All, I'm trying to plot a filled cylinder in 3D using Graphics3D and then take 2D slices of said cylinder. I know that Cylinder is officially 'filled', but the 2D ...
122 views

### Help in evidencing a region (circular) of a .tiff image and cropping all the rest of the image

I'm asking for the community help since I have problems in cropping an image. I'm having LEED images which are 576*720p, which are made by a big black region at which middle I have the image I'm ...
28 views

### How to use ScheduleTask in a dynamic module? [duplicate]

I have a little timer widget that times two separate tasks: It is simple enough, but I can't see why it's not working. Am I not understanding the connection between ScheduleTasks and Dynamics? ...
70 views

### What is the purpose of Refresh? [duplicate]

I never quite understood the point of Refresh. Why would I do this: Dynamic[Refresh[DateString[], UpdateInterval -> 1]] when it is the same as ...
260 views

### Why don't products of Dirac deltas integrate correctly?

Bug introduced in 10.0.0 and fixed in 10.0.1 The integral $\int \int \ \delta(x) \delta(y) \ dx dy=1$ evaluates to 0 in Mathematica ...
145 views

### How can I easily visualize density plots with singularities with the least loss of detail?

I'm trying to visualize electric fields. StreamPlot is helpful: ...
131 views

### Mean duration between two specific data points

I have dataset such as: ...
40 views

### How can I export a notebook into multimarkdown?

Mulitmarkdown (.md filetype) is a very nice document format that supports rendering mathematical expressions like latex or mathml, rendering syntax highlighted code blocks for any language, as well as ...