How to load data from other directory?

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Mr M.
Mr M. on 26 Nov 2015
Commented: Walter Roberson on 5 Feb 2021
I want to load data from other director, but I want to set relative path instead of absolute. So how to step back from current directory? /..

Answers (4)

Stephen23
Stephen23 on 26 Nov 2015
Edited: Walter Roberson on 5 Feb 2021
This is explained quite well in the documentation:
Under the title "Absolute and Relative Path Names" there is the following information:
Some MATLAB functions also support relative path names. Unless otherwise noted, the path name is relative to the current folder. For example:
  • myfile.m refers to the myfile.m file in the current folder.
  • ./myfolder refers to the myfolder folder in the current folder.
  • ../myfolder/myfile.m refers to the myfile.m file in the myfolder folder, where myfolder is at same level as the current folder. Each repetition of ../ at the beginning of the path moves up an additional folder level.
  2 Comments
Walter Roberson
Walter Roberson on 5 Feb 2021
Stephen got tripped up by conversion to bullet form.
Using ./myfolder (with leading period) is a valid way to refer to myfolder within the current folder. It has some advantages in that using ./myfolder tells MATLAB not to search for myfolder along the MATLAB path. For example
exist('./myfolder', 'dir') %is there one HERE ??
exist('myfolder', 'dir') %is there one somewhere on the path ?

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sarwat firoz
sarwat firoz on 14 Dec 2020
Case 1: If your file is in the same folder, as the file you are using to load the data.
load fileName;
Case 2: If your file is in a folder INSIDE your directory,
load folderName/fileName;
Case 3: If your file is one step OUTSIDE your directory,
load ../fileName;
Case 4: If your file is n step OUTSIDE your directory,
load ../../../../ ... ... ... ../../fileName;
% Please make as many as ../ as much as up you want to go in folder structure.
% Kindly ignore ellipsis.
Case 5: If you wanna go up 2 folders and from there you wanna enter a separate folder structure,
load ../../folderStructure/fileName;
% Please use it the way you want.
P.S. Windows users can use either backward slash or Linux.
References:
  1. GNU Octave Free your Numbers
  2. GNU Octave (version 6.1.0)

Titus Edelhofer
Titus Edelhofer on 26 Nov 2015
Edited: Titus Edelhofer on 26 Nov 2015
Hi,
you simply need to remove the / at the beginning:
dir ..\temp
dir ..\..\anotherFolder\anotherSubfolder
Note: replace "\" of course with "/" on Linux or OSX
Or use the generic functions:
% go to folders up the hierarchy:
upUpFolder = fileparts(fileparts(pwd));
% go into another folder
folder = fullfile(upUpFolder, 'subFolder');
% do whatever you like
dir(folder)
Titus
  1 Comment
Walter Roberson
Walter Roberson on 26 Nov 2015
Side note: "/" can be used in MS Windows.

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Thorsten
Thorsten on 26 Nov 2015
Edited: Thorsten on 26 Nov 2015
Use '..' to refer to the folder that contains the current folder. To load ../folderName1/folderName1/filename.ext robustly on different OSs, use:
load(fullfile('..', 'folderName1', 'folderName2', 'filename.ext'))
you can add as much folderNames as you need.
  1 Comment
Titus Edelhofer
Titus Edelhofer on 27 Nov 2015
Jepp, that's easier than using fileparts ...

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