how to create a new folder mkdir, but naming that folder as input before running the code

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ARP
ARP 2018-4-24
评论： ARP 2018-4-24
Hi all,
I am not sure if the title is clear. Basically, every time I will run the code, I want a new folder to save my m.files and figures.
That new folder, should be called as the project name that I chose, for example "set_one". This should be easily changed at the beginning of the code, and not to be changed manually from all the related commands every time I change the data sets.
an example
fname = 'set_one'; % this should be the proyect title
Image data = [12.7 5.02 -98 63.9 0 -.2 56];
mkdir('C:\Users\Desktop\matlab results\',fname);
filename=('C:\Users\Desktop\matlab results\fname\Image_Data');
save(filename,'Image_Data')
..And it does not work. mkdir does create a new folder as set_one, but is not able to recognize the new folder as set_one. Therefore, error message says that the folder does not exist.
What I am trying to do is that on the filename line, where it says fname, should be rewritten dynamically by the name I give to fname.
Thanks in advance,
Regards

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采纳的回答

Stephen23
Stephen23 2018-4-24
编辑：Stephen23 2018-4-24
The problem is that where you tried to access the new folder names you referred to the variable name, rather than to the value of that variable:
filename=('C:\Users\Desktop\matlab results\fname\Image_Data');
^^^^^^ this refers to a directory named 'fname'!
When you put fname into that char vector, then that is what MATLAB tells the OS to look for: a folder literally named 'fname' which should be inside the folder 'matlab results'.
Do you have such a directory?
Clearly not.
Is that the name of the directory that you are looking for?
Clearly not.
Instead of looking for a folder literally named 'fname', you need to use the value of the variable fname (not the name of the variable). I also recommend that you use fullfile, which makes joining folder names together easier:
pname = 'C:\Users\Desktop\matlab results';
dname = 'set_one';
mkdir(fullfile(pname,dname))
Image data = [12.7 5.02 -98 63.9 0 -.2 56];
filename = fullfile(pname,dname,'Image_Data.mat');
save(filename,'Image_Data')
  1 个评论
ARP
ARP 2018-4-24
That is exactly what I needed. Many thanks!
I am still learning and I am not familiar with all the possible commands. Thanks for your time

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更多回答（1 个）

Peyman Obeidy
Peyman Obeidy 2018-4-24
not quite sure what you want to do, but try this
clear
clc
path =[pwd '\'];
stru =dir( fullfile(path, '*.vsi') );
fileNames = { stru.name };
outputPath = [path 'NewImage2\'];
mkdir(outputPath);
for iFile = 1: numel(fileNames)
fileName=fileNames{iFile}; % read the file name here
numofName=str2double(fileName(7:end-4)); % cut out all but the number
newFileNum=numofName;
newName = fullfile([outputPath 'Image_' , sprintf('%02d.vsi', newFileNum)] );
copyfile(fullfile(path, fileNames{iFile}), newName );
end
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Peyman Obeidy
Peyman Obeidy 2018-4-24

do you want your code to ask you the name? something like;

prompt = {'Enter a name of the folader'};
title = 'Folder name';
definput = {'Set_one'};
opts.Interpreter = 'tex';
answer = inputdlg(prompt,title,[1 40],definput,opts);
ARP
ARP 2018-4-24

that would be useful yes, but the problem is that matlab does not recognize the new folder name. For instance,

fname = 'set_one' ; % the folder that I want to save the data, which does not exist. 

mkdir('C:\Users\Desktop\matlab results\',fname); % create that folder

Running as it is, a new folder "set_one" is created.

problem:

When saving a variable, now I tell it to go to the new folder given by fname, that is "set_one" in this case

filename=('C:\Users\Desktop\matlab results\fname\Image_Data');
save(filename,'Image_data')

Cannot create 'Image_Data.mat' because 'C:\Users\Desktop\matlab results\fname' does not exist.

Error (line 9)
save(filename,'Image_data')

To fix the error, I should write the command as (see set_one instead of fname)

filename=('C:\Users\Desktop\matlab results\set_one\Image_Data');
save(filename,'Image_data')

But that is not the way to go, since I will have to change manually every time the folder name, and its linked commands.

Why matlab does not understand that fname == set_one?

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