Up: LAS Language Internal Help
LAS\FILE Mode Name [SINGLE|MULTIPLE] [/CONVERT] [/OVERWRITE]
Selects the input and output files.
FILE IN name open an existing file as input
FILE OUT name open an existing file as output
FILE BOTH name select the same file for input and output.
FILE UPDATE name open a file for Updates only.
FILE OUT name Type creates a new output file, of the specified type
Option /OVERWRITE will force overwriting an existing fil
FILE OUT name Type /CONVERT converts an existing output file to
the specified type
Files have two different Types: SINGLE or MULTIPLE.
File of type MULTIPLE allows to have several version of the same spec-
trum (same ObservationNumber). This type is the "historical" one for
CLASS. It can be opened in all modes.
For file of type SINGLE, the ObservationNumber is a unique identifier of
the spectrum: only one version exists. As a consequence a file of this
type cannot in general be opened both IN and OUT. Such files can be
opened in mode UPDATE, which allows spectra to be modified in place,
typically via a TAG or UPDATE command after a MODIFY. Command WRITE is
not allowed in this mode.
This new type has been introduced to simplify and speed up On-The-Fly
The default extension is .30m but can can be specified using command SET