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3.25.16.5 set datafile commentschars
The ‘set datafile commentschars‘ command allows you to tell ‘gnuplot‘ what characters are used in a data file to denote comments. Gnuplot will ignore rest of the line behind the specified characters if either of them is the first non-blank character on the line.
Syntax:
set datafile commentschars {"<string>"} show datafile commentschars unset commentschars
Default value of the string is "#!" on VMS and "#" otherwise.
Then, the following line in a data file is completely ignored
# 1 2 3 4
but the following
1 # 3 4
produces rather unexpected plot unless
set datafile missing '#'
is specified as well.
Example:
set datafile commentschars "#!%"
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