load files whith a previus specified name

Question

Beatriz Sanchez 2019-4-19

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https://ww2.mathworks.cn/matlabcentral/answers/457298-load-files-whith-a-previus-specified-name

评论： Beatriz Sanchez 2019-4-19

采纳的回答： Jos (10584)

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hello all,

so, I want to load a file whose name is previously specified in a variable:

alf=0
pol=1
 name= [(strcat('1beatrixresult Aplha=', num2str(alf), '- p=', num2str(pol)))]
 
 load (name)
   

Now, matlab gives me an error:

Error using load

Unable to read file '1beatrixresult Aplha=0- p=1'. No such file or directory.

But I know that the file does exist. In fact if I writte it like this:

load ('1beatrixresult Alpha=0- p=1')

then matlab load the file without problem. Any idea of what could be causing this error and how can I fix it? thank you before hand

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David Wilson 2019-4-19

编辑：David Wilson 2019-4-19

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Works for me, but you might want to clean up your fkilenames. Try to avoid spaces, equal signs etc. Use underscore if you must.

Let's start by generating a data (.mat) file with some dummy data, and the (awkward) filename you have.

%%
clear 
dummyVar = -pi; % some dummy data 
save('1beatrixresult Aplha=0- p=1')
clear 

Now clear the workspace, and try to reload it. Make sure that the .mat file exists though.

%% Now try to load it 
clear 
% form .mat data file name 
alf=0;
pol=1;
name = [(strcat('1beatrixresult Aplha=', num2str(alf), '- p=', num2str(pol)))]
if ~(exist(name,'file')==2)
    warning('No file found') % prudent to check 
end 
load(name)
disp(dummyVar)

Works for me. If you are on Windows, your filename has spaces, and that's traditionally a big no no. You need to use double quotes in DOS. You should also have a recent version of Matlab as well. Check with ver.

Of course all your (self-inflicted) problems would go away if you had a safer filename scheme.

Beatriz Sanchez 2019-4-19