Questions on obtaining files and directory structure/information and manipulating the said structure/information, searching/renaming particular files in a directory, etc., in an OS independent manner.

learn more… | top users | synonyms

1
vote
3answers
3k views

How to write values of function to file?

For example, say I wanted to plot Sin(x) like this: Plot[Sin[x],{x,0,2 Pi}] But instead of plotting to a graph, I want to now tabulate the values of Sin[x] to a ...
6
votes
1answer
324 views

How to save data using FileNameSetter or similar

I would like to export data to a file using a SaveAs type dialog, using something like FileNameSetter[name,"Save"] to give a browse button. Any help with this ...
13
votes
2answers
325 views

Mathematica “prelude”

Is there any way to have the functions from a mathematica file be loaded on startup? For example, in this excellent answer, Jens helps me out and gives me some functions for creating legends for ...
37
votes
3answers
1k views

How can I set up a versioning system within a notebook?

Since the Frontend crashes a lot, for important work it would be nice to have the notebook automatically branch and save itself every so many minutes. For instance, commands like ...
15
votes
3answers
2k views

Relative paths for portable notebooks in Mathematica

I cannot find how to use relative paths in Mathematica. My directory structure is simple. ...
3
votes
2answers
181 views

How to check which file is older

Is there a command in Mathematica to check the date when a file was last modified? Suppose I have two notebooks: File1.nb and ...
5
votes
2answers
277 views

How to remove an expression from a file?

To read in expressions from a file, one can do ReadList[file, Expression, 3]. How to do the opposite, i.e. remove a number of expressions from a file, modifying ...
17
votes
3answers
1k views

List all the directories under the current one

I feel like I am forgetting something obvious, and will remember or be ashamed as soon as an answer turns up. However, I cannot for the life of me get all of the directories in the current working ...
86
votes
1answer
4k views

File-backed lists/variables for handling large data

Background Currently I am working with some large data (most of it generated by Mathematica itself). I usually find it a hassle to do this. For example, I just exported a large amount of data to ...