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3.14.2.8 thru
The thru function is provided for backward compatibility.
Syntax:
plot 'file' thru f(x) |
It is equivalent to:
plot 'file' using 1:(f($2)) |
While the latter appears more complex, it is much more flexible. The more natural
plot 'file' thru f(y) |
also works (i.e. you can use y as the dummy variable).
thru is parsed for ‘splot‘ and fit but has no effect.