I wanna read multiple pics from multiple folders, assume that, I have an animal folder in drive D, and I have cat,dog,koala sub-folders in it, each sub-folder has 5 pics of animals. how could i read this pics and process them? Please explain me by details.
I wrote this code for one folder:
cd dog
tasavir = dir('*.jpg');
n = length(tasavir);
figure;
for i=1:n
esm = tasavir(i).name;
t = imread(esm);
ss{i} = t;
subplot(5,2,i),imshow(ss{i})
end
Welcome to Stackoverflow! Given your structure you can do something like this:
workDir = cd;
cd('D:\'); % start in parent directory
dirs = dir();
for dIdx = 1:length(dirs)
curDir = dirs(dIdx).name;
if isdir(curDir) % is directory?
cd(curDir);
% RUN YOUR CODE FOR A SINGLE DIRECTORY
cd('..');
end
end
cd(workDir);
Related
I'm using this code to load the ECG-ID database into MATLAB:
%% Initialization
clear all; close all; clc
%% read files from folder A
% Specify the folder where the files live.
myFolder = 'Databases\ECG_ID';
% Check to make sure that folder actually exists. Warn user if it doesn't.
if ~isfolder(myFolder)
errorMessage = sprintf('Error: The following folder does not exist:\n%s\nPlease specify a new folder.', myFolder;)
uiwait(warndlg(errorMessage);)
myFolder = uigetdir(; % Ask for a new one.)
if myFolder == 0
% User clicked Cancel
return;
end
end
% Get a list of all files in the folder with the desired file name pattern.
filePattern = fullfile(myFolder, '**/rec_*'; % Change to whatever pattern you need.)
theFiles = dir(filePattern;)
for k = 1 : length(theFiles)
baseFileName = theFiles(k.name;)
fullFileName = fullfile(theFiles(k.folder, baseFileName);)
fprintf(1, 'Now reading %s\n', fullFileName;)
% Now do whatever you want with this file name,
% such as reading it in as an image array with imread()
[sig, Fs, tm] = rdsamp(fullFileName, [1],[],[],[],1;)
end
But I keep getting this error message:
Now reading C:\Users\******\Documents\MATLAB\Databases\ECG_ID\Person_01\rec_1.atr
Error using rdsamp (line 203)
Could not find record: C:\Users\******\Documents\MATLAB\Databases\ECG_ID\Person_01\rec_1.atr. Search path is set to: '.
C:\Users\******\Documents\MATLAB\mcode\..\database\ http://physionet.org/physiobank/database/'
I can successfully load one signal at a time (but I can't load the entire database using the above code) using this command:
[sig, Fs, tm] = rdsamp('Databases\ECG_ID\Person_01\rec_1');
How do I solve this problem? How can I load all the files in MATLAB?
Thanks in advance.
I have this code portion for instance :
fichiers=glob.glob('/path/*.file')
for f in fichiers:
if os.path.isfile(f):
fichier = open(f,'r')
for l in fichier:
m = regex.match(l)
if m:
print('%s/ EMO /%s'%(m.group(1),m.group(3)))
#here I want to write this modified line
else:
#write line non modified
fichier.close()
And I would like, instead of printing results in the shell, apply the substitution to all lines of each line with copying files with new names or in a new directory (to be sure not making mistakes).
Have you some idea to teach me how to do that please ?
It's really quite simple: all you need to do is define your output directory and open a new file in that directory to write to, every time you open a file that you read. Check this out:
import glob
import os
outdirpath = "/path/to/output/directory"
for fpath in glob.glob('/path/*.file'):
if not os.path.isfile(fpath): continue
with open(fpath) as fichier, open(os.path.join(outdirpath, os.path.basename(fpath)), 'w') as outfile:
for line in fichier:
m = regex.match(line)
if m:
outfile.write('%s/ EMO /%s'%(m.group(1),m.group(3)))
else:
outfile.write(line)
I have that code,
h1 = dir('C:\Users\John\Documents\MATLAB\code for yannis\anger(W)'); %angry
h2 = dir('C:\Users\John\Documents\MATLAB\code for yannis\neutral(N)');%neutral
h3 = dir('C:\Users\John\Documents\MATLAB\code for yannis\happiness(F)');%happy
%fprintf('%s', filename);%filename h(i,1).name
fprintf('%d \n',numel(h1));
fprintf('%d \n',numel(h2));
fprintf('%d \n',numel(h3));
%fprintf('%d', max(numel(h1),numel(h2),numel(h3)));
A= [numel(h1) numel(h2) numel(h3)];
fprintf('%d \n \n \n', max(A));
fprintf('%s \n', h1(2).name);
%load('C:\Users\John\Documents\MATLAB\code for yannis\anger(W)\*.mat');
fprintf('%d \n \n \n', length(h1));
resultsdir = 'results';
addpath('C:\Users\John\Documents\MATLAB\code for yannis\anger(W)\');
array = [h1(2)];
for i=3:max(A)+3
%s= 'C:\Users\John\Documents\MATLAB\code for yannis\anger(W)';
thisfile = h1(i).name;
destfile = fullfile(resultsdir, thisfile);
thisdata = load(thisfile);
%array[thisdata];
%strcmp(h(i,1).name(1:2), s);
%cat(1, array, h1(i,1).M);
fprintf('%s \n', h1(i,1).name);
end
and i want to keep all the .mat files in an array in order to compare it with other mat files
Thanks in advance
You can select the top level folder and utilize your system's dir call to recursively search for all files that match your criteria (*.mat, in this case)
For example:
mypath = uigetdir('', 'Select Top Level Folder');
oldpath = cd(mypath); % cd to data directory for simpler dir call
[~, cmdout] = system('dir /S /B *.mat');
cd(oldpath); % Return to previous path
mymatfiles = regexp(cmdout, '(.:\\[\w\-\\. ]+\.\w+)', 'match');
The system call returns one long string with all of the absolute paths to your *.mat files. I utilize a regexp to split this into a cell array, where each cell is an absolute path to a single *.mat file.
Note that this is Windows only because it uses the MS-DOS dir command. This function can easily be adapted to other operating systems, I just don't know them.
Assuming you have .mat files in all of those directories (ending in ".mat"), simply get the directory listings of each of those directories and store them.
% All of the folders where the *.mat files live
folders = {'C:\folder1'; 'C:\folder2'};
allfiles = cell();
for k = 1:numel(folders)
% Find all the .mat files
files = dir(fullfile(folders{k}, '*.mat'));
% Convert to absolute paths
fullpaths = cellfun(#(x)fullfile(folders{k}, x), {files.name}, 'uniform', 0);
% Store in our global cell array
allfiles = cat(1, allfiles, fullpaths(:));
end
Now allfiles contains an entry for every .mat file contained within those paths. You can then loop through this cell array to perform any operations you need.
alldata = cellfun(#load, allfiles, 'uniform', 0);
How can I get Python to loop through a directory and find a specific string in each file located within that directory, then output a summary of what it found?
I want to search the long files for the following string:
FIRMWARE_VERSION = "2.15"
Only, the firmware version can be different in each file. So I want the log file to report back with whatever version it finds.
import glob
import os
print("The following list contains the firmware version of each server.\n")
os.chdir( "LOGS\\" )
for file in glob.glob('*.log'):
with open(file) as f:
contents = f.read()
if 'FIRMWARE_VERSION = "' in contents:
print (file + " = ???)
I was thinking I could use something like the following to return the extra characters but it's not working.
file[:+5]
I want the output to look something like this:
server1.web.com = FIRMWARE_VERSION = "2.16"
server2.web.com = FIRMWARE_VERSION = "3.01"
server3.web.com = FIRMWARE_VERSION = "1.26"
server4.web.com = FIRMWARE_VERSION = "4.1"
server5.web.com = FIRMWARE_VERSION = "3.50"
Any suggestions on how I can do this?
You can use regex for grub the text :
import re
for file in glob.glob('*.log'):
with open(file) as f:
contents = f.read()
if 'FIRMWARE_VERSION = "' in contents:
print (file + '='+ re.search(r'FIRMWARE_VERSION ="([\d.]+)"',contents).group(1))
In this case re.search will do the job! with searching the file content based on the following pattern :
r'FIRMWARE_VERSION ="([\d.]+)"'
that find a float number between two double quote!also you can use the following that match anything right after FIRMWARE_VERSIONbetween two double quote.
r'FIRMWARE_VERSION =(".*")'
Ok. Many trouble shooting hours ...and many error "dings" later, I'm still having the same problem. Due to my beginner skills I'm having problems achieving the following segment of my project:
I will be as detailed as possible so I can hopefully nail it this time:
On my computer i have a folder C:\data which contains many different subfolders.
The subfolders are named by dates in a MMDDYY fashion. For example "040312"
In each subfolder are excel files named after Baseball teams. each subfolder may contain a different combination of xls files.
I am trying to write code that achieves the following objectives:
1.) Loops through all the subfolders of the C:\data folder looking for xls files that have the filenames: Angles.xls, Diamondbacks.xls, etc.
2.) If the files are found in each subfolder import the spreadsheet data and generate a plot of the data titled "Score" and "Allow".
3.) If the file is not found any given subfolder skip and continue to the next file to be located.
4.)Then save the generated plot in the same folder that the spreadsheet was imported from as a .fig and a .bmp file.
I've gotten hints to use various functions like: genpath, dir, but the code I've been fumbling through isn't able to achieve my goals.
a) the script doesn't import the excel files from all the subfolders
b) the script wont save the .fig or .bmp file in the associated subfolder
Here is the code I have been fumbling through:
%I know all of this is wrong wrong wrong. Please help to adjust my code to %achieve the objectives outlined above!
addpath(genpath('c:\data'))
folder = 'c:\data';
subdirs = dir(folder);
subdirs(~[subdirs.isdir]) = [] ;
numberOfFolders = length(subdirs);
if numberOfFolders <= 0
uiwait(warndlg('Number of folders = 0!'))
end
wantedfiles = {'Angels' 'Diamondbacks' 'Orioles' 'Royals' 'Yankees' 'Mets' 'Giants'};
for K = 1 : numberOfFolders
thissubdir = subdirs(K).name;
if strcmp(thissubdir, '.') || strcmp(thissubdir, '..')
continue;
end
subdirpath = [folder '\' thissubdir];
for L = 1 : length(wantedfiles)
for wantedfiles = {'Angels' 'Diamondbacks' 'Orioles' 'Royals' 'Yankees' 'Mets' 'Giants'};
folder = '';
fileToRead1 = [wantedfiles{1} '.xls'];
sheetName='Sheet1';
if exist(fileToRead1, 'file') == 0
% File does not exist
% Skip to bottom of loop and continue with the loop
continue;
end
%This is to import the data and organize it
% All of this code I had auto-generated from importing files manually
[numbers, strings, raw] = xlsread(fileToRead1, sheetName);
if ~isempty(numbers)
newData1.data = numbers;
end
if ~isempty(strings) && ~isempty(numbers)
[strRows, strCols] = size(strings);
[numRows, numCols] = size(numbers);
likelyRow = size(raw,1) - numRows;
% Break the data up into a new structure with one field per column.
if strCols == numCols && likelyRow > 0 && strRows >= likelyRow
newData1.colheaders = strings(likelyRow, :);
end
end
% Create new variables in the base workspace from those fields.
for i = 1:size(newData1.colheaders, 2)
assignin('base', genvarname(newData1.colheaders{i}), newData1.data(:,i));
end
% Now I execute the plotting of data
subplot (2,1,1), plot(Score,Allow)
title([wantedfiles{1} 'Testing to see if it works']);
subplot (2,1,2), plot(Allow,Score)
title('Well, did it?');
% here I save the generated plots, but they don't save where I want them to
saveas(gcf,[wantedfiles{1} ' did it work.fig']);
saveas(gcf,[wantedfiles{1} ' did it work.bmp']);
end
end
end
%At the end of the script I still was unable to loop over the files that I wanted
rmpath(genpath('c:\data'));