Thread Subject: Parsing a filename

user selects a file using "uigetfile" and now I want to extract text from that file name. The file names will always be in a variation of this format:

directory\The_File_01.ext
directory\TheFile_01.ext

(where the extension is always the same, and there is ALWAYS two number digits following an underscore before the extension)

What I need to collect:
1. the pathname
2. the filename WITHOUT the last two numbers, but INCLUDING all of the underscores
3. the two numbers following the final underscore

any ideas? I've run fresh out. thanks!

"Rachel Laughs" <remove.thisrachellaughs@gmail.com> wrote in message <hdujjo$224$1@fred.mathworks.com>...
> user selects a file using "uigetfile" and now I want to extract text from that file name. The file names will always be in a variation of this format:
>
> directory\The_File_01.ext
> directory\TheFile_01.ext
>
> (where the extension is always the same, and there is ALWAYS two number digits following an underscore before the extension)
>
> What I need to collect:
> 1. the pathname
> 2. the filename WITHOUT the last two numbers, but INCLUDING all of the underscores
> 3. the two numbers following the final underscore
>
> any ideas? I've run fresh out. thanks!

Hi,
the following code solves your task:
     [filename,pth] = uigetfile(......); % The path is in pth
     I = findstr('_',filename);
     file = filename(1:I(end));
Mira

"Miroslav Balda" <miroslav.nospam@balda.cz> wrote in message <hdule1$rkp$1@fred.mathworks.com>...
> Hi,
> the following code solves your task:
> [filename,pth] = uigetfile(......); % The path is in pth
> I = findstr('_',filename);
> file = filename(1:I(end));
> Mira

ah, that is brilliant!! Thank you very much. I was not aware of the findstr function and your genius use of it! thanks!!

by the way, what would you suggest for extracting the two numbers at the end of the filename? Something about textscan perhaps?

"Rachel Laughs" <remove.thisrachellaughs@gmail.com> wrote in message <hduofa$8u1$1@fred.mathworks.com>...
>
> by the way, what would you suggest for extracting the two numbers at the end of the filename? Something about textscan perhaps?


oh wait, nevermind. I just expanded on your use of "I"

thanks again

In article <hdujjo$224$1@fred.mathworks.com>,
remove.thisrachellaughs@gmail.com says...
> user selects a file using "uigetfile" and now I want to extract text from that file name. The file names will always be in a variation of this format:
>
> directory\The_File_01.ext
> directory\TheFile_01.ext
>
> (where the extension is always the same, and there is ALWAYS two number digits following an underscore before the extension)
>
> What I need to collect:
> 1. the pathname
> 2. the filename WITHOUT the last two numbers, but INCLUDING all of the underscores
> 3. the two numbers following the final underscore
>
> any ideas? I've run fresh out. thanks!
>

You might check out the function fileparts

--
Loren
http://blogs.mathworks.com/loren

"Miroslav Balda" <miroslav.nospam@balda.cz> wrote in message <hdule1$rkp$1@fred.mathworks.com>...
> "Rachel Laughs" <remove.thisrachellaughs@gmail.com> wrote in message <hdujjo$224$1@fred.mathworks.com>...
:
SNIP
:
> > 3. the two numbers following the final underscore
:
> Hi,
> the following code solves your task:
> [filename,pth] = uigetfile(......); % The path is in pth
> I = findstr('_',filename);
> file = filename(1:I(end));

Sorry, I have missed to answer the third question:
numb = filename(I+1:I+2);
Mira