I am trying to print an eps file 'flow.eps' in folder 'figures'. This script is in folder 'auto'.
path1 = fullfile('Documents', 'MATLAB', 'auto', 'figures', 'flow.eps');
print(gcf, '-depsc', 'path1')
However, I am getting 'path1.eps' in 'auto'. It is working when written like this:
print(gcf, '-depsc', '~/Documents/Matlab/auto/figures/flow.eps')
I am trying the former one because I want my script to be compatible with both windows & unix.
The correct way to do the first method is:
path1 = fullfile('Documents', 'MATLAB', 'auto', 'figures', 'flow.eps');
print(gcf, '-depsc', path1)
path1, <---> 'path1'
I searched a lot for that answer, I tried many of them, but seems no one is correct.
Some suggested to change the directory to the specified path you want to save your picture, others suggested movefile command but they are time consuming.
The solution is simply, if you wanna print in any folder, the print command uses the file name as a complete path otherwise it is saved in current directory.
So I wanna save the figure to F:\Folder\Subfolder\filename , I just type
print(gcf,'F:\Folder\Subfolder\filename', '-depsc' )
Or
print('F:\Folder\Subfolder\filename', '-depsc' )
Related
I'm trying to open images with imread but it keEps telling me that the files do not exist.
Here's the message from the command window
Error using imread>get_full_filename (line 516)
File "Pic1.jpg" does not exist.
Error in imread (line 340)
fullname = get_full_filename(filename);
Error in ImageDetection (line 2)
img1 = imread('Pic1.jpg');
And here are the sections of code that it's referencing from the function itself
if (fid == -1)
if ~isempty(dir(filename))
% String 'Too many open files' is from strerror.
% So, no need for a message catalog.
if contains(errmsg, 'Too many open files')
error(message('MATLAB:imagesci:imread:tooManyOpenFiles', filename));
else
error(message('MATLAB:imagesci:imread:fileReadPermission', filename));
end
else
error(message('MATLAB:imagesci:imread:fileDoesNotExist', filename));<--LINE 516
end
if isempty(fmt_s)
% The format was not specified explicitly.
% Get the absolute path of the file
fullname = get_full_filename(filename); <--LINE 340
Image isn't in Current Directory (Or Path)
If your image is in your working directory, you can call it by its name ("Pic1.jpg"). However, MATLAB doesn't search all folders on your computer. If, for example, if your program is running in C:\Users\user\Documents\MATLAB, and the image is in C:\Users\user\Pictures, you could reference the picture using:
Absolute paths ("C:\Users\user\Pictures\Pic1.jpg")
Relative paths ("..\..\Pictures\Pic1.jpg")
Usually, if the pictures only exist because of your program, it'd be somewhere in the same directory, so you wouldn't need to use ".." to move up any directories.
If you want the user to be able to select a picture each time the program is run, I'd recommend looking into uigetfile. If you want to know more about where MATLAB searches for files, see this article.
Secondly, you may want to check your file name. While it seems obvious, a simple misspelling can be hard to notice at times, for example "Pic1.jpg" vs "Pic1,jpg" vs "Pic1.jpeg"
Just above the line of your code where the error occurs, write a new line:
dir
To output in the prompt the files of the current folder, and check that the name of your file exactly appears there. Could you copy us that output?
I'm working on my MATLAB code in a number of different locations, and it would be really helpful if I could make the code aware of its location on the computer. Till now I worked with .m-files. For .m-files I found the following solutions:
%example 1
cd(fileparts(mfilename('fullpath')))
or
%example 2
tmp = matlab.desktop.editor.getActive;
cd(fileparts(tmp.Filename));
or
%example 3
S = dbstack('-completenames');
S(1).file
or
%example 4
which(mfilename)
But with MATLAB 2016a there comes a new feature called live script. And with that those solutions are not working anymore.
%For example I would like to do something like this
cd(MLX_FILELOCATION);
%or
which(mlxfilename)
(Edit III: Problem: I am not able to get the path/filelocation or name of the current opened/executed MATLAB-file. With *.m-files this is possible with the examples above. With *.mlx-files it is not possible anymore. And I prefere to use *.mlx-files instead of *.m-files.)
Outputs of the examples above executed in a *.mlx-file:
%example1: mfilename returns the path to the 'MatlabEvaluationHelper' in the 'AppData\Local\Temp'-folder
%example2: output is an empty array
%example3: same output as example1
%example4: same output as example1, because mfilename returns "MatlabEvaluationHelper"
Edit I:
My first goal is that I would like to change the "current folder" (-> "cd") to the path of the running script.
Why: In the same folder with the mlx-file I have for example .csv-files with data. And for example by tomorrow I have new folder. I copy the mlx_file and now I want to make sure that I don't use the csv-files from yesterday (because the current folder from yesterday is shown in the file browser of MATLAB) -> so I would like to change the "current folder" automatically with just copying the mlx-file into a new folder.
If there is a better practise for that, please let me know.
Thanks for helping
Edit II:
Example for a used workflow:
I programmed a MATLAB script. Saved it in folder "Dataset_ONE". Furthermure I copy "Dataset_ONE.csv"-file into the same folder. E.g. I now create a plot and save it as the "*.png" in folder "Dataset_ONE".
The day after I might have a second (a new and with that different) dataset "Datasset_TWO". I create a new folder "Dataset_TWO". Copy the MATLAB-files to the new folder. Open the MATLAB file there. Then, because of the default settings, MATLAB has changed the "Current Folder" to the new folder where I opened MATLAB.
But if I now open the MATLAB script in the first folder again (at the same time with the other dataset MATLAB script) I have to be careful about the current folder.
In this case it might be useful to have the described solution.
If what you want is some sort of way of preventing you running the wrong script on the wrong data without realising, then you could add a safety instruction at the top of each script, throwing an error if your current directory is not the same as the location of the script you're running. e.g.
>> assert (strcmp (pwd, '/absolute/path/to/my/script'));
As for loading the right data / saving to the right location, just load and save using absolute paths and there should be no confusion.
I am reading 50 files from a folder as follows:
list_of_files=dir(fullfile('/home/user/Desktop/MTP/schemes/o33smnpimp/data/', '*.dat'));
My problem is until & unless I have same exact folder opened as path in MATLAB path (one above the path window) this command won't work. What is the reason behind this? Actually there are multiple schemes and every time I need to run a particular scheme, I have to go to the data folder of that particular scheme. How can it be solved?
The issue is that you can get the list of files using the full path like you have but you ALSO need to specify the full path when you use it. For example, try changing your code to:
baseDir = '/home/user/Desktop/MTP/schemes/o33smnpimp/data/'; % <--- will use this twice
list_of_files=dir(fullfile(baseDir, '*.dat'));
for ind = 1:length(list_of_files)
myFilenameFull = fullfile(baseDir, list_of_files(ind).name); % <---- must use fullfile here too!
D1 = getData(myFilenameFull, 'stuff');
end
I am trying to manipulate and save an image to file and it doesn't seem to be working from a function. It does, however, work in the command window. I have tried save, saveas, fprint, and others with no luck.
A = imread('contourSS.jpg'); B = rgb2gray(A);
imwrite(B, 'new_image.gif', 'gif');
Nothing shows up in the MATLAB directory when I run this code from a function, but it does show up in the MATLAB directory when I run it from the command window. Any ideas?
Thanks in advance.
Are you sure the you're saving the file to the correct directory? Try adding adding disp(pwd) to the function, it will display the directory that you are saving too.
Also its generally a good idea to use complete paths when saving a file. Consider changing your code to this:
imgDir = /home/user/image;
readfile = fullfile( imgDir, 'contourSS.jpg');
writefile = fullfile( imgDir, 'new_image.gif');
A = imread(readfild); B = rgb2gray(A);
imwrite(B, writefile, 'gif');
i'm trying to load a mat file from a subdirectory using the following code:
% filename_str is read from a text file
directoryname_str = "./data";
f = fullfile(directoryname_str, filename_str);
load(f);
when i run this sequence, load says it can't find the file...but when i copy or type the relative path and the file name by hand into an active octave session, everything works like a champ with no errors.
i assume this has something to do with how octave searches for mat files? if so, what's the correct environment variable or function call i need to make in order for this code to work?
thanks!
Are you sure that what you put into the variable f is the same as what you input manually in octave?
Are you also in the same directory? Because you're specifying relative paths, this should be the case.. you can get the current directory octave is in with pwd
And last of all, you can double check file existence in octave itself using exist
exist(f,'file')
If this returns false, there's definitely something wrong with your current directory, are something's very weird going on..