automatic naming of files based on the readed file name?

[Guillermo]

Using "write labview measurement file" and "read labview measurement file". For example:
Readed_file.dat
Readed_file_written.dat

[S.Klumpp]

Hi,

try to extract the filename from the path from the Readed_file.dat using string filter functions.
Afterwards add the new part of the name and create the file.
I attached a file with same sample code.
Note, it is not executable, because I didn't connect all VIs operating an files, but it shows the principal how things could work)

Stephan