labview List Directory wildcard bug

When I use the "List Directory" function in labview 7.1 there appears
to be a problem in the function.  The function seems sporadic in
which filenames it will recognize and which it will not if the math
parameter contains multiple wildcards.  In the example I provided,
there are a series of files in the directory with names like 
"calib_LCAL17_RAW_CH1.CSV", " calib_SCAL11_RAW_CH1.CSV" etc.  The
match string I used was "calib" concatenated with
"_*CAL*_RAW_CH1.CSV".  The function returns that no such files
exist when there are 17 such files in the directory. 

On a more positive note, when I use "data" concatenated with
"_*_RAW_CH1_???.CSV" as the match parameter, and a different set of
filenames including "data_5_RAW_CH1_OSL.CSV",
"data_10_FORM_CH1_OSL.CSV" then it correctly finds 10 files.  

I am not sure why but i have tried many different approaches and this
simply does not work.  I have a very long path and perhaps this is
causing problems.

x9561 (148461)
8/16/2005 3:40:48 PM
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Well, the problem is that in a directory where there are numerous files
each containing a different numbers (as an example the file " calib_LCAL17_RAW_CH1.CSV" has
the number 17 in it)--the method  returns "1"  meaning that
it only found one matching file.  I checked for spaces, double
underscores, etc before the first post.  The probe shows the
correct  concatenation.  Still it is finding only 1 file
"calib_LCAL1_RAW_CH1.CSV."  Help!  this is so annoying.
x9561 (148461)
8/16/2005 6:41:19 PM
Sorry CoastalMaineBird, that is not true.  The * wild card can be used anywhere in a filename, and matches any number of characters, including 0 characters.  As a test, I just put a list of text files in my temp directory:
Then I wrote a simple vi with List Files, provided the temp directory and the string "cal_*test*_cal.txt" as inputs.  The funtion returned all 5 files.  Works here.  I have no idea why mclaugb is having a problem.  Note:  I am not using quotes in the matching string, they are shown here for clarity.

x9561 (148461)
8/16/2005 8:10:55 PM
I have tried it with the standard "List Directory" under advanced
functions and the modified one "List Directory" that I attached before
making my first post.  Neither are working.  I tried *.CSV
which returned the correct number of files.  However "calib*.CSV"
did not.  It only found 1 file and there are many in the
folder.  Just for a test, i eliminated the concatenation and just
typed in a few strings into a constant.  It is still not
working.  I deleted all wires and reconnected them
correctly.  The only thing I can imagine is that perhaps the path
is too long.  I have that pointing to a folder which is about 7
subdirectories deep.  Perhaps the length of the search stops at a
large number of characters.  HELP.  This is really holding me
x9561 (148461)
8/16/2005 11:10:56 PM
I thought that you would understand quickly what I meant by RESTRICT, but I see that that I should have explained more.
1- you didn't provide "list" in your original post. so I simply replaced it with standard "list" of LV.
2- you were interested in file names that were matched with you defined pattern, but "list" eliminates those files with defined pattern. You see! it means that if there are 17 files matching your pattern and no other files in the specified path, the size of the output array will be zero. because all 17 files are matched with your pattern and consequently are eliminated from the output file names array.
Now we have two situations!
1- your "list" functions differently from "list". perhaps you have built it in a way so it will return  files that match the pattern.
Result: your problem probably comes from that vi. please upload it and let us see it. I tested your program with "list" of LV and there is no problem in distinguishing name patterns.
2- from the beginning you were not aware of the functionality of "list" and thought that it will retunrn matched file names. Actually, with my first reply I supposed that you made a small mistake and misunderstood the functionality of "list". I didn't intend to insult you at all and wanted to only mention about the point to let you find it.
x9561 (148461)
8/17/2005 5:41:10 AM
I now understand what was referred to when by RESTRICT.  I did not
understand that initially so I certainly didn't feel insulted.  I
have managed to sort out the overall problem though which, as i
figured, was something stupid.  I tried a shorter path as someone
suggested by copying all files to another directory.  What helped
me realize the problem was using "dir calib*.csv" which returned only 1
file (there are some 35 in the folder).  I then examined the
filenames carefully and realized there was a space in front of every
filename "calib*.csv" (except one) but not in front of "data*.csv"
which is why "data*.csv" returned correctly and "calib*.csv" did not. I
used some dodgy program to do a batch file rename that apparently added
this space initially which I did not realize.  
Thank you so much for your help.  Without your posts, I would have probably given up and tried to do this another way.
x9561 (148461)
8/17/2005 10:10:52 AM
Soroush said:
2- you were interested in file names that were matched with you defined pattern, but "list" eliminates those files with defined pattern. You see! it means that if there are 17 files matching your pattern and no other files in the specified path, the size of the output array will be zero. because all 17 files are matched with your pattern and consequently are eliminated from the output file names array.
Sorry Soroush, this is not true.  The defined pattern is not eliminated by List Directory vi.  It is just the opposite.  The output array contains files that match the pattern.  If this were not so, then the vi I used for an example would have returned all files except the ones I wanted.  My results prove that what I am saying is true.  Try it yourself.  Create a directory, C:\MyTemp, and put in some test files, like test1.txt, test2.txt, etc.  Put it some other files that won't match, like one.txt.  Then create a vi like shown below.  Use test*.txt for a match pattern.  Look at the resulting output array.  This will show that List Directory outputs files that match the pattern.
<img src=""> Message Edited by tbob on 08-17-2005  10:14 AM

x9561 (148461)
8/17/2005 4:40:55 PM
Yes, You're right, quite right. I couldn't accept that if I hadn't tested it by myself. actually, I've never used this function, but just take a look at detailed help of this VI in LV help docs. the followings are written in explaining the "pattern" parameter:
pattern:  restricts the files and directories returned to those whose names match pattern. The pattern matching in this function is similar to the matching used in matching wildcards in Windows and UNIX filenames and is not like the regular expression matching performed by the Match Pattern function. If you specify characters other than the question mark character (?) or the asterisk character (*), the function displays only files or directories that contain those characters. You can use the question mark character (?) to match any single character. You can use the asterisk character (*) to match any sequence of one or more characters.
what do you think when you read such an explanation?:smileyindifferent:
Educating thread for me (not&nbsp;about LV), in expense of one star!
x9561 (148461)
8/17/2005 5:10:51 PM

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