i have matrix, output.dat:
0 0 0 0 0 0 3 7 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 16 6 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 8 4 16 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 5 11 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 9 10 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 28 13 11 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 6 17 33 14 2 0 5 2 0 0 0 0 0 0 0 0 0 0 0 0 1 13 15 11 6 0 0 5 7 0 0 0 0 0 0 0 0 0 0 0 0 3 3 8 3 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 8 8 8 1 2 1 3 2 0 0 0 0 0 0 0 0 0 0 0 0 1 17 10 4 7 4 12 3 0 0 0 0 0 0 0 0 0 0 3 2 3 6 22 9 5 8 5 1 0 0 0 0 0 0 0 0 0 0 1 5 7 10 35 4 6 6 9 4 0 0 0 0 0 0 0 0 0 0 2 12 12 30 52 23 11 8 7 5 1 0 0 0 0 0 0 0 0 1 7 25 16 33 30 26 16 21 19 5 2 0 0 0 0 0 0 0 0 0 0 12 36 19 22 28 19 30 17 9 0 0 0 0 0 0 0 0 0 0 11 18 12 37 32 27 26 33 21 10 12 3 0 0 0 0 0 0 0 0 11 14 23 44 59 45 26 28 9 3 7 0 0 0 0 0 0 0 0 0 0 0 8 19 23 22 11 34 32 25 7 0 0 0 0 0 0 0 0 0 0 0 0 4 8 9 16 21 26 20 11 12 4 6 2 using in bash script results in fine looking plot of matrix:
echo "set terminal png font arial 30 size 1600,1200; set output 'output.png';set xrange [1:20];set yrange [1:20];set xlabel 'x';set ylabel 'y'; set pm3d map;set pm3d interpolate 0,0;splot 'output.dat' matrix" | gnuplot however, i'd x-axis , y-axis "0...1" instead of "1...20". if change xrange [1:20] [0:1] no data plotted. , scaling data doesn't work. using xticlabels (at least understand it) hasn't changed axes either.
how can change x , y "0...1" instead of "1...20"?
i don't know tried, scaling in using statement works fine:
echo "set terminal pngcairo;set autoscale fix; set tics out nomirror; set xlabel 'x';set ylabel 'y'; set pm3d map interpolate 0,0; splot 'output.dat' matrix using (\$1/19.0):(\$2/19.0):3" | gnuplot > output.png 
