GNU Info

(gnuplot.info)update

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Enter node , (file) or (file)node

 This command writes the current values of the fit parameters into the given
 file, formatted as an initial-value file (as described in the `fit`s
 (Note: fit )ection). This is useful for saving the current values for later
 use or for restarting a converged or stopped fit.

 Syntax:
       update <filename> {<filename>}

 If a second filename is supplied, the updated values are written to this
 file, and the original parameter file is left unmodified.

 Otherwise, if the file already exists, `gnuplot` (Note: gnuplot ) first
 renames it by appending `.old` and then opens a new file.  That is, "`update
 'fred'`" behaves the same as "`!rename fred fred.old; update 'fred.old'
 'fred'`". [On DOS and other systems that use the twelve-character
 "filename.ext" naming convention, "ext" will be "`old`" and "filename" will be
 related (hopefully recognizably) to the initial name.  Renaming is not done at
 all on VMS systems, since they use file-versioning.]

 Please see `fit` for more information.