In my code I want the user to manually choose a folder of .wav files to process.
I used :
dname=uigetdir('C:');
%% dname gives the path to the folder directory and saves it as a variable
I know that you can use cd directory name and cd .. like in Linux with MATLAB, how do I detach the meaningful part of dname to be able to use the cd function?
For the looping through, I found a stackexchange answer that covered that.
files = dir('C:\myfolder\*.txt');
for k = 1:length(files)
load(files(k).name, '-ascii')
end
dname=uigetdir('C:');
cd(dname); %make current directory, the directory specified by the path
files=dir('*.wav'); %get all the .wav files in the folder
for k=1:length(files); % loop through the files 1:last.wav
audio=cell(1, length(files)); %preallocate a cell with the appropriate size
audio{k} = audioread(files(k).name); %input in the files
end %files struct can be called after the end
Related
I would like to change the extension of several files.
I mean that in one directory a I have many files in type file1.out, file2.out, ..., file600.out.
I would like to rename these files to *.txt (I mean file1.txt, file2.txt, ..., file600.txt) in this directory with one command via MATLAB?
I mean I would like to change the extension of some files from *.out to *.txt files.
This code from here can be helpful:
% Get all text files in the current folder
files = dir('*.out');
% Loop through each file
for id = 1:length(files)
% Get the file name
[~, f,ext] = fileparts(files(id).name);
% change the extension
rename = strcat(f,'.txt') ;
movefile(files(id).name, rename);
end
I have a lot of .fig files that are named like this: 20160922_01_id_32509055.fig, 20160921_02_id_53109418.fig and so on.
So I thought that I create a script that loop through all the .fig files in the folder and group(copy) them into another folder(s) based on the last number in the file name. The folder is created based on the id number. Is this possible?
I have been looking on other solutions involving looping through folders but I am totally fresh. This would make it easier for me to check the .fig files while I am learning to do other stuff in Matlab.
All is possible with MATLAB! We can use dir to get all .fig files, then use regexp to get the numeric part of each filename and then use copyfile to copy the file to it's new home. If you want to move it instead, you can use movefile instead .
% Define where the files are now and where you want them.
srcdir = '/my/input/directory';
outdir = '/my/output/directory';
% Find all .fig files in the source directory
figfiles = dir(fullfile(srcdir, '*.fig'));
figfiles = {figfiles.name};
for k = 1:numel(figfiles)
% Extract the last numeric part from the filename
numpart = regexp(figfiles{k}, '(?<=id_)\d+', 'match', 'once');
% Determine the folder we are going to put it in
destination = fullfile(outdir, numpart);
% Make sure the folder exists
if ~exist(destination, 'dir')
mkdir(destination)
end
% Copy the file there!
copyfile(fullfile(srcdir, figfiles{k}), destination)
end
Here's an example how to identify and copy the files. I'll let you do the for loop :)
>> Figs = dir('*.fig'); % I had two .fig files on my desktop
>> Basename = strsplit(Figs(1).name, '.');
>> Id = strsplit(Basename{1}, '_');
>> Id = Id{3};
>> mkdir(fullfile('./',Id));
>> copyfile(Figs(1).name, fullfile('./',Id));
Play with the commands to see what they do. It should be straightforward :)
I'm trying to access images in a matlab interface
my code is as follows:
global im2 im
axes(handles.axes4);
[path1, user_cance]= imgetfile();
if user_cance
msgbox(sprintf('Error'), 'Error', 'Error');
return
end
srcFiles = dir('C:\Users\User\Desktop\images test\yale faces\yalefaces\..');
% yale faces is the database folder
for i = 1 : length(srcFiles)
file_name=dir(strcat('C:\Users\User\Desktop\images test\yale faces\yalefaces'));
im2=imread(strcat('C:\Users\User\Desktop\images test\yale faces\yalefaces',file_name(i).name));
%processing of read image
end
the issue is that when I run the code, it gives the following error:
Can't open file "C:\Users\User\Desktop\images test\yale faces\yalefaces" for
reading;
you may not have read permission.
Does anyone know how to solve this issue?
When you do a directory listing (without any wildcards) you are going to get the current directory '.' and parent directory as well '..'. You can't read these like files because they are directories. You will need to filter out the directories prior to trying to read them with imread.
files = dir('C:\Users\User\Desktop\images test\yale faces\yalefaces');
% Remove directories
files = files(~[files.isdir]);
As a side note, it is very hard to tell what your code is doing, but I'm pretty sure it doesn't do what you hope.
It seems like you want to get all images within the database. If that's so, you'll want to do something like.
folder = 'C:\Users\User\Desktop\images test\yale faces\yalefaces';
% Get a list of all files in this folder
files = dir(folder);
files = files(~[files.isdir]);
for k = 1:numel(files)
% Append the folder with the filename to get the path and load
im2 = imread(fullfile(folder, files(k).name));
end
I highly discourage using strcat to construct file paths particularly because it removes trailing/leading whitespace from each input which can corrupt a filename. fullfile was designed for exactly this so please use that.
Hi I'm trying to create a matlab script in a way that it reads all files in a directory and launches a different command for every file extension.
I have:
teqc1.azi
teqc1.ele
teqc1.sn1
teqc2.azi
teqc****
what i need is that script reads the files and launches recursively the command:
`teqc1.azi -> plot_compact_2(teqc1.azi)`
`teqc1.ele -> plot_compact_2(teqc1.ele)`
`teqc1.sn1 -> plot_compact_2(teqc1.sn1)`
`teqc**** -> plot_compact_2(teqc****)`
This is what I've come up to right now:
function plot_teqc
d=dir('*'); % <- retrieve all names: file(s) and folder(s)
d=d(~[d.isdir]); % <- keep file name(s), only
d={d.name}.'; % <- file name(s)
nf=name(d);
for i=1:nf
plot_compact_2(d,'gps');
% type(d{i});
end
Thanks
Then you'll need the dir function to list the folder contents and the fileparts function to get the extensions.
You can also have a look at this question to see how to get a list of all files in a directory that match a certain mask.
So:
% get folder contents
filelist = dir('/path/to/directory');
% keep only files, subdirectories will be removed
filelist = {filelist([filelist.isdir] == 0).name};
% loop through files
for i=1:numel(filelist)
% call your function, give the full file path as parameter
plot_compact_2(fullfile('/path/to/directory', filelist{i}));
end
I wish to read files from a directory and iteratively perform an operation on each file. This operation does not require altering the file.
I understand that I should use a for loop for this. Thus far I have tried:
FILES = ls('path\to\folder');
for i = 1:size(FILES, 1);
STRU = pdbread(FILES{i});
end
The error returned here suggests to me, a novice, that listing a directory with ls() does not assign the contents to a data structure.
Secondly I tried creating a file containing on each line a path to a file, e.g.,
C:\Documents and Settings\My Documents\MATLAB\asd.pdb
C:\Documents and Settings\My Documents\MATLAB\asd.pdb
I then read this file using the following code:
fid = fopen('paths_to_files.txt');
FILES = textscan(fid, '%s');
FILES = FILES{1};
fclose(fid);
This code reads the file but creates a newline where a space exists in the pathway, i.e.
'C:\Documents'
'and'
'Setting\My'
'Documents\MATLAB\asd.pdb'
Ultimately, I then intended to use the for loop
for i = 1:size(FILES, 1)
PDB = pdbread(char(FILES{i}));
to read each file but pdbread() throws an error proclaiming that the file is of incorrect format or does not exist.
Is this due to the newline separation of paths when the pathway file is read in?
Any help or suggestions greatly apppreciated.
Thanks,
S :-)
First Get a list of all files matching your criteria:
( in this case pdb files in C:\My Documents\MATLAB )
matfiles = dir(fullfile('C:', 'My Documents', 'MATLAB', '*.pdb'))
Then read in a file as follows:
( Here i can vary from 1 to the number of files )
data = load(matfiles(i).name)
Repeat this until you have read all your files.
A simpler alternative if you can rename your files is as follows:-
First save the reqd. files as 1.pdb, 2.pdb, 3.pdb,... etc.
Then the code to read them iteratively in Matlab is as follows:
for i = 1:n
str = strcat('C:\My Documents\MATLAB', int2str(i),'.pdb');
data = load(matfiles(i).name);
% use our logic here
% before proceeding to the next file
end
I copy this from yahoo answers! It worked for me
% copy-paste the following into your command window or your function
% first, you have to find the folder
folder = uigetdir; % check the help for uigetdir to see how to specify a starting path, which makes your life easier
% get the names of all files. dirListing is a struct array.
dirListing = dir(folder);
% loop through the files and open. Note that dir also lists the directories, so you have to check for them.
for d = 1:length(dirListing)
if ~dirListing(1).isdir
fileName = fullfile(folder,dirListing(d).name); % use full path because the folder may not be the active path
% open your file here
fopen(fileName)
% do something
end % if-clause
end % for-loop