How to input coordinates within the splot function for ftriangles in gnuplot

Question

I want to add a triangle between three points in my gnuplot.

I found this code:

set pm3d ftriangles
splot 'x.txt' w pm3d notitle

whereby x.txt contains for instance:

0 0 1
1 1 0
1 0 1

I would like to be able to do embed all of the code in 1 script without having the extra text file, so just together with the splot command. Is this possible? I tried something like this, but it didn't work:

set pm3d ftriangles
splot w pm3d notitle
0 0 1
e
1 1 0
e
1 0 1
e

Sorry for missing some basics in gnuplot...

Answer 1

You could try a not-so-elegant small shell script:

#!/bin/bash

cat > x.txt << EOF
0 0 1
1 1 0
1 0 1
EOF

gnuplot << GNUPLOT

set pm3d ftriangles
splot 'x.txt' w pm3d notitle

GNUPLOT

rm x.txt

Answer 2

this should work:

splot '-' w pm3d notitle
0 0 1
1 1 0
1 0 1
e