[Gnuplot-bugs] Excessive use of read and sigaction.

[thorbjorn w. <wi...@ex...>]

I am using Version 4.2 patchlevel 0. I am running it on a solaris 10 
sparc machine.

When doing
plot '-' ....
 gnuplot reads one character at the time.

 I understand that is necessary when reading from terminal for readline 
to work,
but when reading from pipe or file it should not be necessary. And I see 
that if I do

% gnuplot file

 it does it right. If I do
% gnuplot <file
or
% cat file | gnuplot

it reads one character at the time. For lots of input that takes a long 
time.

My workaround is to write the output to temporary files and plot those.

When doing a
gnuplot> plot 'file' matrix using 1:($2+$3/10)
gnuplot calls sigaction before and after every evaluation. This causes 
it to go much slower.

My workaround is to do the calculation in my own program and not using 
the "using".


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