I have a script for generate various png files. How could I make a movie from this dataset?
set terminal pngcairo# size 350,262 enhanced font 'Verdana,10'
filename(n) = sprintf("frame_%d.dat", n)
set nokey
set xrange [0:102]
set yrange [0:102]
set style line 1 \
linecolor rgb '#0060ad' \
pointtype 4 pointsize 1.5
set style line 2 \
linecolor rgb '#dd181f' \
pointtype 4 pointsize 1.5
set style line 3 \
linecolor rgb '#0f181f' \
pointtype 4 pointsize 1.5
do for [t=1:10] {
set output sprintf('frame_%d.png',t)
plot filename(t) index 0 using 1:2 w p ls 1,
'' index 1 using 1:2 w p ls 2,
'' index 2 using 1:2 w p ls 3
}