dir function help

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James
James 2011-8-6
Hi
I want to be able to list all the jpg files within a folder called videos. Can anyone explain why my code does not work:
dir('videos/*.jpg)
I get the error videos/*.jpg not found. Please help
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Image Analyst
Image Analyst 2011-8-6
Well you're missing a trailing quote, but that won't give that error. Did you follow the guidelines for the second example of this section of the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F
Jan
Jan 2011-8-7
@James: Please post a copy of the complete error message.

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回答（3 个）

Paulo Silva
Paulo Silva 2011-8-6
perhaps the bar is the other one?
dir('videos\*.jpg)
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Pierre
Pierre 2011-8-6
'/' as file separator should also work on Windows systems too. (At least it does on mine.)

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Fangjun Jiang
Fangjun Jiang 2011-8-6
dir(['videos',filesep,'*.jpg'])
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Pierre
Pierre 2011-8-6
(Just for convenience issues: fullfile('videos', '*.jpg') is equivalent to your statement and comes in quite handy for deeper stacked directory structures.)

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Pierre
Pierre 2011-8-6
  • Are you in the right working directory? Check with pwd and/or check whether the results of dir (without any parameters) contains a directory called "videos".
  • If there is no file matching the pattern, this error will appear. You won't simply get an empty result (although I agree this should be the case).
  • Did you eventually forget about the case sensitivity of Linux systems?

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