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.

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2
votes
2answers
108 views

Adding NotebookDirectory to $Path when notebook opens

I'm trying to get relative notebook paths work without evaluating $Path = Append[$Path, NotebookDirectory[]]; each time I open a notebook. A bonus would be to keep ...
1
vote
1answer
66 views

How to evaluate the same code in a whole bunch of existing notebooks

I have a large folder of existing notebooks, each currently containing a single cell of input. I would like --- in each of these notebooks --- to evaluate that cell, evaluate a new chunk of code I've ...
3
votes
0answers
20 views

how to make SaveAs saves to NotebookDirectory[] instead of NotebookBrowseDirectory[]?

I find Mathematica handling of directories utterly bizarre to say the least. I end up losing changes and seeing files saved in wrong folder due to this. Even in Version 10.01 which I am using, on ...
0
votes
0answers
18 views

Can one upload .xls in a cdf style gui? how would someone go about this?

I would like to create a cdf that reads and plots table data however is it possible to say create a drop to upload function, can mathematica support this?
4
votes
2answers
169 views

How can I import and split lines with ASCII separator?

This is my data file, each line was separated by SOH, maybe hex \x001, I've tried some options of ...
0
votes
2answers
51 views

File Handling. How to save the progress in a file?

Assuming I already have the file created. I have a programme that,returns an output, in our case number. I want Mathematica to save this number in a file, together with results saved from previous ...
1
vote
1answer
87 views

ReadList can't read “.csv” data with correct line number?

Well, the problem was solved today. Since "testAll.csv" is generated by Java/Eclipse, and I noticed that the LineSeperator is ...
2
votes
1answer
26 views

Put/Get don't accept a string-valued expression as filename [duplicate]

I'm trying to do the following with an expression: filename=StringJoin[{"myfile", ToString[someNumber],".m"}]; expression >> filename; But mathematica ...
0
votes
0answers
43 views

How to automatically Import, Name and Export multiple images? [duplicate]

Sorry for the very basic question but I'm really new to Mathematica. I have a directory(myDataDir) full of images (myImage1.tif, myImage2.tif...) I have a piece of code (let's call it ...
1
vote
1answer
75 views

Copy/Pasting code that contains double quotation marks leads to broken code [duplicate]

Sometimes, when copy/pasting code that contains a string (double-quotes around it), the copy of the code fails to evaluate. For example, the original code ...
1
vote
0answers
34 views

SemanticImport::unexpinvaliderr error when using trial version

I am trying to use SemanticImport for a personal experiment. I can correctly import a tsv file from a path, but if I change ...
0
votes
1answer
40 views

Copy files existing in different directories under the same directory

I have many files existing in different directories, I need to copy it under the same directory. Any suggestions?
3
votes
1answer
101 views

How does Mathematica use system environment variables?

Is there a common way in which environment variables are accessed, stored, or used by the kernel? There are built-in functions for querying and setting vars in the system environment, but there are ...
1
vote
2answers
85 views

Change Temporary Directory

How to change the value of $TemporaryDirectory ? I need to change it because there is not enough space on the C drive and the calculation seems to stop after a while !
9
votes
0answers
68 views

Is there a way to stop Export if the file size is too big?

I've got code that's exporting a file, but the file might be so big that it will take up too much space on the cluster I'm using and crash other users' processes. Is there anything like ...
7
votes
1answer
98 views

why CopyFile cannot overwrite existing file?

CopyFile return $Failed when the file exists on destination. is there any way to force CopyFile to overwrite the existing one? the way I use now is DeleteFile and ...
0
votes
0answers
27 views

How to get the subdirectory of a ftp weblink?

For example, I can use FileNames["*",dir] to get all subdirectory under dir if dir is some directory of my local computer. Suppose that I want to get all ...
2
votes
1answer
53 views

What's the complete list of file name extensions used by Mathematica?

What's the complete list of file name extensions used by Mathematica? The ones I know are Before V8 .m .nb .mt After V9: ...
1
vote
0answers
37 views

Default starting location of “Save as…” dialog in OS X [duplicate]

In the answer to this previous question, user Szabolcs says On OS X (I'm using 10.9 and Mathematica 9) the file chooser dialogue will remember the last location you used. So if you Save/Open ...
5
votes
2answers
76 views

Error when implementing StartProcess[] in loops (Do, While, Table)

I'm using Mathematica to control another program (Surface Evolver) through the terminal (ie using StartProcess[]; and ...
1
vote
1answer
41 views

How to copy a uncertain name file with the command CopyFile in Mathematica

I have many files named like this "GSM697492_500_D1.CEL", and a another file which contain the first part of the file name like this"GSM697492". I want to copy the some of the CEL files from one ...
4
votes
2answers
83 views

Minimal label to distinguish among a list of directories

I have a list of long directory names. For each directory name, I need a label just long enough to distinguish itself from the rest. Each label should be a ...
4
votes
1answer
112 views

Watch File in Directory .NET

How might I watch for a specific file to change in a directory using Mathematica/.NET code? The following works in .NET but fires twice when you change the file. ...
3
votes
1answer
42 views

Where can I permanently modify Directory[]?

First I set SetDirectory["F:\\learning_mma"];Directory[](*ok,success*) and then I quite the kernel: Quit[] an then ...
2
votes
1answer
49 views

What's wrong with this RenameFile?

I want to rename a .txt file. For example create a file on your Desktop and name it use TEST.TXT, now I want to rename it to ...
0
votes
2answers
49 views

Use modified part of file path as new file name

i want to import an image, modify it and then export the modified image. Something like this: img = Import["C:\\Images\\e4271-5.jpg"] Some modifications ...
12
votes
0answers
124 views

A documented syntax of FileNames doesn't work?

According to the documentation for FileNames: However when I attempt to use this syntax I get an error: ...
0
votes
1answer
49 views

Rename a list of files [duplicate]

I need to rename a list of files .bmp having name like 1.bmp, 2.bmp,...,155.bmp. I want to get a list of files having the same number of digits in name like 001.bmp,002.bmp....,155.bmp. I am trying ...
3
votes
1answer
57 views

Windows Insert File Path

Suppose I want to Save["filename", foo] under Windows. Ordinarily, the way to deal with file names under windows is to open the Insert dialogue and find a file path, but in this use case, the file is ...
11
votes
1answer
109 views

$Path hijacked by PacletManager?

Summary: Since Mathematica version 6, the PacletManager seems to have engineered an escalating hijack of the $Path variable. Add-on packages need to have a ...
5
votes
2answers
138 views

Find file names in directory

I am trying to find the list of any file in any directory of a given name (by in the directory, I mean directly in the directory, so in a directory which is in the directory would not count). For the ...
15
votes
1answer
171 views

File-name completion for custom functions

Mathematica 10 has introduces file name completion. It works only with certain built-in functions such as Import, SetDirectory, ...
2
votes
2answers
99 views

Overwriting first line of large file

As mentioned, I wish to read the first line of a file, and if needed, overwrite it with a new string. The aim is to have a CSV with a list of possible elements. Example: ...
3
votes
1answer
93 views

how to write TableForm expression into file?

Now I have a list stored in data as follows data = {{"Ca", 1, 1, 1}, {"Ca", 2, 2, 2}, {"Ca", 3, 3, 3}} the ...
2
votes
1answer
63 views

How to read from /dev/random?

I am looking to read a few bytes from /dev/random on OS X and Linux. The simplest approach fails on both operating systems (see below). Why? What is a ...
2
votes
1answer
116 views

Get the last line from each of a large number of files, transform them, and write all results to a single new file

I have several hundreds of .csv files that are not logically named (contains numbers, characters, and special characters), all stored in a directory. Each file has large but unequal number of rows and ...
5
votes
1answer
282 views

Mathematica 10 doesn't support path containing Chinese characters

I tried to import file in Mathematica 10 ( windows 7 system), the path contains some chinese characters. After holding ctrl+shift, and drag the file into front end. I got path like ...
0
votes
1answer
50 views
-1
votes
3answers
89 views

How do i import a list of files, choosing the name

I have this list of files, i'm using FileNames[{"*.txt"}, NotebookDirectory[]] to import it, but i just want the ones without inelastic on the name. How can i select just by the name? Thanks ...
2
votes
2answers
113 views

How to set an absolute path name using SetDirectory?

I tried the following: Directory[] /Users/John SetDirectory["Library/Mathematica"] ...
0
votes
1answer
94 views

Loading and processing five files at a time from a directory containing many, many files

I have 3000 files (for example: aa101.csv, aa108.csv, aa120.csv, ...) and I need to process them. I need to load five files from a folder, process them, and export them to new list in Excel. Then I ...
2
votes
1answer
68 views

Get names of all folders in a directory [duplicate]

I simply want a list of the folder names (without subfolders) in a directory, but can't seem to find the right command for this. Can anyone help me out :)? Thanks in advance
2
votes
2answers
100 views

Specify column width while exporting

I am trying to export a set of data into a file but I can not force mathematica to keep a certain width for each column. For example, when I export a table: ...
0
votes
2answers
105 views

Creating directory structure through Mathematica

Is there mkdirs() (make directory structure) equivalent in Mathematica? I want to specify something like this : dir1/dir2/dirn ...
3
votes
1answer
67 views

Order imported files by their alteration date

Probably a very easy question, but I could not find the answer, so it would be very nice if you can help me: Let us say I have 10 files, all with the extension ...
0
votes
1answer
424 views

NotePad++ User defined language

I know there is a xml file with language for Mathematica notebook (nb or m files). The link is http://sourceforge.net/apps/mediawiki/notepad-plus/?title=User_Defined_Language_Files Now I want a xml ...
1
vote
1answer
84 views

Merge StyleSheet into a notebook

I have a custom style called style1.nb and I want to install it into a notebook Class01.nb so I can send only the notebook file to my students with the style of style1.nb. Is that possible?
2
votes
1answer
48 views

How can I automatically name files being exported based on input parameters

I have Mathematica notebook that performs some operation say a=2 b=3 c=5 d=4 how do I set the output file after evaluation to be named using the values ...
1
vote
2answers
110 views

How to generate a unique file name similar as that created by CreateTemporary

CreateTemporary can generate a unique file name like ...
1
vote
3answers
478 views

How to export data to a plain text file?

I am preparing data used by a command line program. It requires data in a simpliest possible format: value_x1 value_y1 value_x2 value_y2 ... value_xN value_yN ...