# All Questions

997 views

### How to evaluate the 0/0 type limit in Mathematica?

When I use Limit to evaluate the $k \to 0$ limit of ((k + 2) (α^2 - Sqrt[α^4 + k]) + k)/(α^2 - Sqrt[α^4 + k] + 2 k) If ...
547 views

### Saving a notebook without output lines

Is it possible to change the way Mathematica saves so that Out[] lines are never included? I have a .nb file that processes a ...
961 views

### Symmetrical image transformation for a kaleidoscope-type image

I've been trying to write a little kaleidoscope-type manipulate, using images rather than graphics, and using ImageTransformation as a way in. However, I'm starting ...
871 views

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

Oftentimes you find yourself looking for polynomials in multiple variables. Consider the following expression: a(x - y)^3 + b(x - y) + c(x - y) + d as you can ...
427 views

### How to get grid lines at all (log) tick marks in Version 10?

In Version 7 using GridLines -> Automatic (or All) would put a grid line at every log-spaced tick mark: ...
777 views

### How can I type-check the arguments of a Mathematica function?

(For educational purposes) I defined the following functions: Translation (in $\mathbb{R}^2$): trM[vec_] := {{1, 0, vec[[1]]}, {0, 1, vec[[2]]}, {0, 0, 1}} ...
214 views

### Selective evaluation of blocks of code in a Manipulate

Is it possible to attach certain pieces of code to certain controls in a Manipulate? For example, consider the following Manipulate ...
267 views

### Use TextRecognize to grab timestamps from a video frame

I have microscope videos that have a timestamp overlay to them, and it would be great if I could extract this for each frame to add to my metadata. TextRecognize ...
445 views

659 views

### Detecting edge/region in contour plot

I am interested in improving this plot: which I produced with the following command: ...
423 views

### Building a tree

Given a list of word characters, such as this one, I'd like to build a tree, similar to this makeTree function, but with the tree in a different format. So, for an input such as ...
340 views

### How can I style text like in the documentation?

I'm writing an article, and I really like this style that you get when you type ?AnyFunction. Is it possible to achieve this?
425 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. ...
150 views

### In version 10 EvaluationCompletionAction “ShowTiming” no longer gives useful output; any solutions?

Bug introduced in 10.0.0, fixed in 10.0.2 In version 10 using this Front End option no longer gives useful output: ...
258 views

### How to change the appearance of a Cell GroupOpener?

I would like to change the Cell GroupOpener appearance. In the present Mathematica design it is too small and can be missed by a reader unfamiliar with Mma. I know, how to change its color through ...
386 views

### Exporting data extensions in fits file

Context In Astronomy the de facto standard for images and data is FITS. I would like to export heterogenous data sets into a single fits file. Attempt I am interested in exporting into a fits file ...