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Newsgroups: comp.graphics.apps.gnuplot
Subject: variable in plot command and key
Date: Mon, 9 Jan 2017 17:50:51 +0100
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Xref: csiph.com comp.graphics.apps.gnuplot:3519

Hello,

how can I use a string variable as "plot data" and in the key, with a
underline in the variable and the default key entry?

example:

the plot data are in the file "test_test.dat". If I use the plot command

plot 'test_test.dat' u 1:2

gnuplot gives a correct plot with the key entry "'test_test.dat' u 1:2"
to me, it is the default key entry.


Now I want to have the name of the file as a variable, for example "data"

data = 'test_test.dat'
plot data u 1:2

The plot is correct but the key entry is "data u 1:2" instead
"'test_test.dat' u 1:2".


Next thing I have tried is:

data = 'test_test.dat'
plot data u 1:2 t data

The plot is correct but in the key there is a problem with the "_" and
the "u 1:2" is missing.


Is there a way to use a variable as data file name and have the default
key entry?

Jörg