gnuplot一張圖上畫多幅子圖，並輸出爲eps文件

set term post set output "fig1.eps" set size 1, 1 set multiplot layout 2, 2 set size 0.5, 0.5 set origin 0, 0 set title "plot with x^2+y^2" set palette defined (0 "gray100",20 "gray80",40 "gray60",60

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