问题描述
我对gnuplot的输出有问题。生产的地块质量低下。当我从gnuplot窗口将图导出为pdf时，图像清晰清晰。如果我导出为png，结果会稍微模糊。直接从脚本另存为jpeg或png时，图像甚至更糟。有没有办法产生清晰的jpeg或png图像？我正在使用的脚本和软件如下：
set title "Temperature-Specific entropy diagram"
set termopt enhanced
set grid
set key top left
set xlabel "Specific entropy [kJ/KgK]"
set ylabel "Temperature [^oC]"
set datafile missing '0.000000000000000000e+00'
plot "Ts_saturation_curve.txt" using ($1/1000.0):($2-273.15) title "saturation curve" with line lt 1 lw 1.5 lc rgb "black",\
"critical_point.txt" using ($1/1000.0):($2-273.15) title "critical point" with points pt 6 ps 1.5 lc rgb "orangered4",\
"isobaric_critical.txt" using ($1/1000.0):($2-273.15) title "isobaric critical" with line lt 1 lw 1.5 lc rgb "orangered4",\
"isobaric_0.1MPa.txt" using ($1/1000.0):($2-273.15) title "0.1 MPa" with line lt 1 dt 2 lc rgb "dark-red",\
"isobaric_0.2MPa.txt" using ($1/1000.0):($2-273.15) title "0.2 MPa" with line lt 1 dt 2 lc rgb "red",\
"isobaric_0.5MPa.txt" using ($1/1000.0):($2-273.15) title "0.5 MPa" with line lt 1 dt 2 lc rgb "orange",\
"isobaric_1.0MPa.txt" using ($1/1000.0):($2-273.15) title "1 MPa" with line lt 1 dt 2 lc rgb "yellow",\
"isobaric_2.0MPa.txt" using ($1/1000.0):($2-273.15) title "2 MPa" with line lt 1 dt 2 lc rgb "greenyellow",\
"isobaric_5.0MPa.txt" using ($1/1000.0):($2-273.15) title "5 MPa" with line lt 1 dt 2 lc rgb "green",\
"isobaric_10.0MPa.txt" using ($1/1000.0):($2-273.15) title "10 MPa" with line lt 1 dt 2 lc rgb "cyan",\
"isobaric_20.0MPa.txt" using ($1/1000.0):($2-273.15) title "20 MPa" with line lt 1 dt 2 lc rgb "blue",\
"isobaric_50.0MPa.txt" using ($1/1000.0):($2-273.15) title "50 MPa" with line lt 1 dt 2 lc rgb "violet",\
"isobaric_100.0MPa.txt" using ($1/1000.0):($2-273.15) title "100 MPa" with line lt 1 dt 2 lc rgb "purple"
set term png
set output "output.png"
replot
gnuplot 5.2，debian 10.5（cinnamon de）
谢谢。
解决方法
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