Trying to write to a file that uses the current date as a portion of the path

I would like to write to a data file that changes the path when the date changes. I am using the build path VI with the get date/time VI with the "/"'s removed from the string. I've tried using .txt in the pattern input and adding it in with the concatenate string VI. Either way I receive Error 7 File not found. Ifanyone has any thoughts on hoew to accomplish this I'd appreciate it. Thanks

You have to check if the VI that create the file is setted to "create" or to "append" caracters on the file. I receive this error message when i am trying to use the "Write caracters to file.vi" and it was setted to append. You should use an converter to change the name of the file from String to Path. And you have to use a loop structure to check the date and append caracters on the file everytime is needed.
Regards,
Carlos

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Can you write an avi file without using imaq

Just curious if anybody has tried to write an avi file without using imaq vi's? So far I have only found sketchy info on the file format and am looking for some help on the file structure etc. Any references or example avi files with explanations of format would be most helpfull. Thanks in advance -

Absolutely.......
An AVI video file is actually structured in the same way as most Windows media files or RIFF files as they are generically known, thus the description below is applicable to for example WAV files etc.
Thus the file always begins with the four byte code RIFF and continues to use this generic four byte coding known as FOURCC, four-character code or FCC throughout.
There are then specific requirements for each different media content and the sections that must be included to define a valid file structure of the desired meadia type.
Each section or 'CHUNK' is defined by an FCC (RIFF being the first) with facility to include additional FCC's as required. The FCC is followed by a length descriptor and then the data (just for fun the odd CHUNK does not quite fit this very general overview). These chunks then align to even word boundries so padding zeros are often inserted at the end of a CHUNK to make it all nice and neat.
It is a requirement that software that does not recognise an additional custom CHUNK should ignore it, this is very easy as all you have to do is use the length descriptor to 'jump' over the CHUNK concerned.
The following is an example from the 'CLOCK.AVI' found on windows computers for a number of years...
RIFFjB AVI LISTŒ hdrlavih8
Here you can see the RIFF followed by a four byte length descriptor (4 Gigabytes), followed by various sub CHUNKS in this example the sub CHUNK is an AVI (note that it is actually 'AVI ' to conform to the FCC).
So the CHUNK structure looks a bit like this:-
RIFF ('AVI '
LIST ('hdrl'
'avih'()
LIST ('strl'
'strh'()
'strf'()
'strd'()
'strn'()
LIST ('movi'
{SubChunk | LIST ('rec '
SubChunk1
SubChunk2
['idx1']
For more information on all this you need to read the RIFF specification documentation on the MSDN website or on the MSDN Technet materials. Most of the stuff you will immediately locate will refer to the AVI file format as that is where most of the recent effort has been focused.

Upload text file that uses "|" as separator

Hello,
Im trying to upload a text file that uses " | " to separate its columns using fm gui_upload, but it only uploads the first column.
Could anybody tell me what other fm i can use or what i may be doing wrong?

Use this.
CALL FUNCTION 'GUI_UPLOAD'
      EXPORTING
        filename                      = lv_file
        filetype                      = 'ASC'
       <b> has_field_separator           = '|'</b>
        header_length                 = 0
        read_by_line                  = 'X'
   DAT_MODE                      = ' '
   CODEPAGE                      = ' '
        ignore_cerr                   = 'X'
        replacement                   = '#'
   CHECK_BOM                     = ' '
   VIRUS_SCAN_PROFILE            =
   NO_AUTH_CHECK                 = ' '
IMPORTING
   FILELENGTH                    =
   HEADER                        =
      TABLES
        data_tab                      = data_mat
EXCEPTIONS
   FILE_OPEN_ERROR               = 1
   FILE_READ_ERROR               = 2
   NO_BATCH                      = 3
   GUI_REFUSE_FILETRANSFER       = 4
   INVALID_TYPE                  = 5
   NO_AUTHORITY                  = 6
   UNKNOWN_ERROR                 = 7
   BAD_DATA_FORMAT               = 8
   HEADER_NOT_ALLOWED            = 9
   SEPARATOR_NOT_ALLOWED         = 10
   HEADER_TOO_LONG               = 11
   UNKNOWN_DP_ERROR              = 12
   ACCESS_DENIED                 = 13
   DP_OUT_OF_MEMORY              = 14
   DISK_FULL                     = 15
   DP_TIMEOUT                    = 16
   OTHERS                        = 17
Reward Points if useful.
Thanks
Aneesh.

I Need to Write the current Date and Time

I need to write the current date and time to calculate the spend time in each instruction.
What is the instrucion?
Thanks.
MIGUEL ANGEL CARO
[email protected]

The current time can be determined with a Date object:
Date now = new java.util.Date() ;or if you are interested in the seconds since the epoch:
System.currentTimeMillis() ;If you wanted to print them out:
System.out.println( new java.util.Date() ) ;
System.out.println( System.currentTimeMillis() ) ;Kenny

How to create a Date or time field that automatically saves current date or time?

hello,
i want to know that how to create a Date/Time field that automatically shows current Date/Time when .pdf form is opened.
also want to how to stop user to give input in Date/Time field
currently im putting a Date field but it is accepting user input.
hoping for quick response
Thanks in advance!

You can place the below code in the initialize event of the field to display the current date and time.
Set the language to FormCalc.
You can play around the formats to get the desired format of date and time.
if($.rawValue eq null or $.rawValue eq "") then
$.rawValue = Concat(Num2Date(Date(), "MM/DD/YYYY")," ", Num2Time(Time(), "h:MM:SS A"));
endif
You can not restrict the input area in Date time field instead you can validate the input while existing the field.
(OR) set the field to either readOnly or protected mode.
Thanks
Srini

Hi am trying to save Data into a write to measurement file vi using a NI PXI 1042Q with a real time mode but it is not working but when i run it with uploading it into the PXI it save in to the file

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Attachments:
PWMs.vi ‏130 KB

other problem is that the channel DAQmx only works at real time mode not on stand alone vi using Labview 8.2 and Real time 8.2

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ITunes Match has stopped uploading - every file errors and says waiting - I have tried to delete the files and use other formats etc. I have had the service since Day 1 and NEVER had an issue. It didn't start until the Delete from Cloud switch to Hide

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How to call Fortran .dll file that using other library files?

Hi,
I am trying to do some arkward tasks using LabView, and I am desperately need help....
A little bit background:
1. My co-worker has some code written in Fortran, where he called other libraries (many from CERNLAB or PAW). Those stuffs are pretty powerful in mathmatical calculation and simulations.
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4. Are there any good examples that I can take a look?
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Rgds,
Harry

You are aware that Intel Visual Fortran is the successor to Compaq Visual Fortran (I think you made a mistype with the Virtual)? So an upgrade might be at its place.
Anyhow I'm really not familiar with Fortran at all, but lib files are usually compiled into an EXE or DLL and not loaded dynamically. 1)
So there should be no problem with locating those libs. What most likely is a problem are other DLL dependencies such as any Fortran Runtime library or possibly other third party DLLs the more advanced code in your DLL might be using.
Typically most compilers can be configured to link the runtime library code statically into the DLL, as altenbach reports for the Intel compiler, otherwise you must make sure to install the redistributable Fortran Runtime Library for your compiler. Besides that you must make sure to find out what other runtime dependencies your code might have and install them.
1) One exception I know of is LabWindows CVI which allows to also load lib files dynamically. This is supposedly a legacy feature from LabWindows for DOS, which allowed that feature to simulate dynamic module loading in order to swap modules at runtime to work around the 640k memory limitation of DOS.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Help, i am trying to print my JPEG file that i created in photoshop at a photo lab but it is coming out like an X-ray. I have printed these files before so i have no idea what i am doing wrong.

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Basically you're approaching this the wrong way around. What you need is the extreme sections to be quieter, not louder. The problem with moving the lower end of the audio is that you'll move the noise floor too, and get what's generally referred to as a 'pumping' effect. So what you do is to use a compressor to tame the peaks, and leave the lower level sound alone. When you've done that, you amplify (or normalize to a level you can determine) the whole signal. So the noise floor will be higher, but constant and not pumping. 'Match Volume' is a completely different tool for setting the overall levels of different tracks so that they sound approximately the same - it doesn't even begin to do what you want.
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Recently my adobe is taking much longer to load PDF files that used to open immediately

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I am trying to import standard midi file that I created in Band in a Box into Logic Pro 9. I can not get all the track to play with internal instrument sounds... only the piano track. how can I get the others to play... drums, bass etc???? Help

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Small Basic,
Wiki Ninjas,
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Answer an interesting question?
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Phil0124 wrote:
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Trying to write to a file that uses the current date as a portion of the path

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