How to use sprintf in MATLAB

Question

this is my code

for k = 1 : 5
im = imread(sprintf('C:\1\%d.BMP',k));

%blablalba...

end

There are 5 BMP files in "C: \ 1 \"

The files are named 1.BMP, 2.BMP, 3.BMP, 4.BMP, and 5.BMP respectively

Use sprintf to import files of 1.BMP, 2.BMP ... 5.BMP respectively into imread

But there is an error.

error : demo_SR (line 5)

im = imread(sprintf('C:\1\%d.BMP',k));

Why do I get an error when I get k from 1 to 5 and write"%d"?

thanks you

If that is the case you have a bad installation of MATLAB, but I really really doubt it. Or you are not showing everything that is relevant — Ander Biguri
– Ander Biguri, Commented May 2, 2018 at 10:13

Ander Biguri · Accepted Answer · 2018-05-02 10:16:54Z

2

Try:

im = imread(sprintf('C:/1/%d.BMP',k));

MATLAB may interpret \ as a command for escaped characters.

answered May 2, 2018 at 10:16

Ander Biguri

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1 Comment

Ander Biguri Over a year ago

@ONION please consider going through all your questions and accepting the answers that helped you. Otherwise, people will stop answering your questions, as you are not following common courtesy

Phil Goddard · Accepted Answer · 2018-05-02 15:48:16Z

2

For the reason mentioned in @Ander Biguri's answer, you should either use a double backslash,

filename = sprintf('C:\\1\\%d.BMP',k);

or, more robust would be to let MATLAB insert the appropriate path separator by using fullfile,

filename = fullfile('C:','1',sprintf('%d.BMP',1));

answered May 2, 2018 at 15:48

Phil Goddard

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