Error using save Cannot create '_' because '_____' does not exist.

2015 3 24
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更新时间：2015 3 24
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I have some data in a cell array,
data2={[50,1;49,1;26,1];...
[36,2;12,2;37,2;24,2;47.3,2];}
and names in another cell array,
names2={'xxx/01-ab-07c-0fD3/0';'xxx/01-ab-07s-0fD3/6';}
I want to extract a subset of the data,
data2_subset=data2{1,:}(:,1);
then a temporary file name,
tempname2=char(names2(2));
an save the subset to a text file with
save (tempname2, 'data2_subset', '-ASCII');
But I get this error message: _
Error using save
Cannot create '6' because 'xxx/01-ab-07s-0fD3' does not exist.
To try to understand what is happening, I created a mock dataset with simpler names:
names={'12-05';'14-03'};
data={[50,1;29,1;25,1];[35,2;22,2;16,2;38,2];[40,3;32,3;10,3;44,3;43,3];};
data_subset=data{1,:}(:,1);
tempname=char(names(2));
save (tempname, 'data_subset', '-ASCII');
in which case the save command works properly.
Unfortunately I still do not understand what the problem is in the first case. Any suggestions as to what is happening, and possible solutions?

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the cyclist
the cyclist 2015-3-24

1 个投票

MATLAB is interpreting the "/" characters as separators in a directory structure. It is looking for a directory and subdirectory
xxx/01-ab-07s-0fD3

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Matteo Niccoli
Matteo Niccoli 2015-3-24
Ok, thank you. One very simple solution is to change the format by replacing all slashes with dashes. Is there any other way, similar to escaping in Python?
Matteo Niccoli
Matteo Niccoli 2015-3-24
This was suggested on stackoverflow:
tempname3= strrep(tempname2,'/','_');
save (tempname3, 'data2_subset', '-ASCII');
the cyclist
the cyclist 2015-3-24
I'm not sure what you want to do. You can't make MATLAB write that filename, because the operating system won't allow a filename with slashes in it. Right?
Matteo Niccoli
Matteo Niccoli 2015-3-24
You are right, there is no other solution than replacing those slashes.

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