All Questions
94,867
questions
35
votes
3
answers
13k
views
How to export large graphics?
I'm using Raster to create large graphics (1000 by 1666), which I want to Export as a JPEG or TIFF in a resolution that can be printed in a large size, 3' by 5'. I'...
- 1,161
35
votes
2
answers
2k
views
What are recommended guidelines for developing packages?
This might be of general interest – I have different questions regarding naming conventions, contexts, subcontexts, shadowing, etc., but I do feel that they are closely related, thus I don't really ...
- 47.1k
21
votes
1
answer
2k
views
How do you use ssh-keys instead of a password to run a remote-kernel over ssh?
On all of the servers that I regularly interact with, I have ssh-keys setup for passwordless access via ssh. Yet, every time I attempt to start a remote-kernel over ssh, I get asked for a password ...
- 34.1k
23
votes
5
answers
1k
views
18
votes
4
answers
4k
views
How to get actual triangles from DelaunayTriangulation[]?
The ComputationalGeometry package has a DelaunayTriangulation[] function. It returns a list of points connected to each point, ...
- 236k
20
votes
3
answers
2k
views
Efficient way to combine SparseArray objects?
I have several SparseArray objects, say sa11, sa12, sa21, sa22, which I would like to combine into the equivalent of {{sa11, sa12}, {sa21, sa22}}.
As an example, I ...
- 20.2k
85
votes
9
answers
7k
views
Updating Wagon's FindAllCrossings2D[] function
Stan Wagon's Mathematica in Action (second edition; I haven't read the third edition and I'm hoping to eventually see it), demonstrates a nifty function called ...
11
votes
2
answers
899
views
Move the cursor in a notebook using the keyboard
How can I move through a notebook using only the keyboard?
If one tries to use the arrow keys, the cursor tends to get "trapped" in comments and error messages.
- 755
14
votes
5
answers
597
views
Is it possible to cause a notebook to be hidden when pressing the close button?
Is it possible to cause a notebook to be hidden (Visible -> False) instead of closing it when pressing the close button in the title bar?
The ...
- 236k
6
votes
1
answer
505
views
Implementing local complements of graphs
I'm trying to write a routine which generates the local complement of a graph at a vertex. For those who don't know, the local complement for a singly-connected, undirected graph is defined as the ...
- 19.2k
8
votes
1
answer
1k
views
Easiest Way to Use ShowGroupOpener in Mathematica
I currently edit manually the cell contents of a notebook (Ctrl+Shift+A or Cmd+Shift+A) to "recycle" cells containing the ShowGroupOpener option.
Is there an easier way to create documents hiding ...
- 637
7
votes
1
answer
323
views
Setting up TextStyle with initialization cells in Mathematica 6+
It used to be quite straightforward to change the default settings of a notebook in terms of inputs, outputs, text styles and font sizes in previous versions of Mathematica using initialization cells ...
- 637
6
votes
1
answer
513
views
How to simplify expression and use HoldForm at the same time?
Hopefully a simple problem for the experts here.
I have a need many times to build a symbolic expression for an equation (say a PDE) to use for plot labels in a low level function inside ...
- 147k
47
votes
2
answers
1k
views
What is the most effective way to setup a Notebook with transparent background but solid contents?
I know there is a Notebook option WindowOpacity can be used to adjust the opacity of a whole notebook. But what I want is keeping the text and graphics and so on ...
- 27.6k
14
votes
2
answers
377
views
Tuning ParallelMap when IO and computationally bound
I'm currently doing work on processing a number of images taken frame-by-frame from a video. As a result, I have a directory of around 16K PNG images that at most ~300K.
That said, I have a routine, ...
- 469