Error using cd Cannot CD to /Users/man​anmehta/Do​cuments/MA​TLAB/datas​et/1 (Name is nonexistent or not a directory). Error in load_database (line 12) cd(strcat(​'/Users/ma​nanmehta/D​ocuments/M​ATLAB/data​set/',num2​str(i)));

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Keta shah
Keta shah 2013-3-22
function out=load_database()
% We load the database the first time we run the program.
persistent loaded;
persistent w;
status=mkdir('/Users/mananmehta/Documents/MATLAB/dataset/stereo-pairs/cones');
disp(status);
if(isempty(loaded))
v=zeros(10304,400);
for i=1:40
cd(strcat('/Users/mananmehta/Documents/MATLAB/dataset/',num2str(i)));
for j=1:10
a=imread(strcat(num2str(j),'.png'));
v(:,(i-1)*10+j)=reshape(a,size(a,1)*size(a,2),1);
end
cd ..
end
w=uint8(v); % Convert to unsigned 8 bit numbers to save memory.
end
loaded=1; % Set 'loaded' to aviod loading the database again.
out=w;

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回答（1 个）

Jason Ross
Jason Ross 2013-3-22
You are making a directory '/Users/mananmehta/Documents/MATLAB/dataset/stereo-pairs/cones' but then changing directory to '/Users/mananmehta/Documents/MATLAB/dataset/'.
Should you be changing directory to '/Users/mananmehta/Documents/MATLAB/dataset/stereo-pairs/cones'
If this is the case, I'd suggest putting the directory name in a variable and then using the variable in both places to avoid this kind of error.

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