write character

[mspeicher]

I have a problem with writing characters in a file. I have to write a string at EOF (in a new line --that works) and after that I want to write a 1D-spreadsheet in the next line. When I try to solve this problem, everytime the 1D-spreadsheet is immediately behind the string (when I set a carriage return after the string there is only a strange sign but not a line break....

HOw can I get a line break that my string is alone in the line...

Thank you very much

MS

[becktho]

Hi

Could you attach the vi as LV7.0 (Menu File>>Save with options>>Save for previous version).

Thomas

[CoastalMaineBird]

when I set a carriage return after the string there is only a strange sign but not a line break

Carriage return is only the same as "line break" on Macintosh. On Windows, you need a Carriage return + Line Feed.


Use the NEW LINE constant to give you a line break, regardless of platform.

OTHER TIPS:

• 
  You don't need to use the GET DATE/TIME IN SECONDS function - the default value of the FORMAT DATA/TIME string is the current time.
  
• You could use the DECREMENT function instead of subtracting one.
  
• You could use the CURRENT VI's PATH and BUILD PATH functions to be more cross-platform flexible. Plus it removes absolute paths from your own code.
  

[TiTou]

I think this VI does what you like. If so, get inspired !

[CoastalMaineBird]

You could also consider doing this a different way.

As I see it you are reading the entire file, replacing the last character with a line break + a new line, then re-writing the entire string.

If your file is small, it won't matter, but as that file gets bigger, this gets more and more inefficient. Imagine a 10-meg file that you want to add a single line to. You have to read 10 megs, add a line to 10 megs, and write 10 megs.

Consider using the raw file functions to open the file, and write the new data at the end position-1, and close the file. Super-quick, because you don't handle all the data that's gone before. See attached picture.