之前我发布了一个关于将多个3D曲面绘制在一起作为多重绘图的问题。我得到了解决方案，但现在我遇到了控制图形字体的问题。 The fonts are terrible in multiplot and My settings are not doing anything with them I don't know how to control these fonts. I tried ztics but it does not change anything
这是我的代码：
set terminal png size 2000,1600 enhanced transparent
set encoding utf8 #iso_8859_1
set output 'output.png'
set border linewidth 2
set pm3d border lw 2
####Set the Axis and Axis-Labels Formatting####
set format '%g'
set xtics font "Helvetica,26" scale 3 # Font for xtics
set xtics offset 3,-1.5 # Put xtics away from the axis
set ytics font "Helvetica,26" scale 3
set ytics offset 3,0 # Put ytics away from the axis
set ztics font "Helvetica,26" scale 3
set ztics 5 # Difference between numbers on Y-axis
set format z "" # To hide ztics on the left side
set grid # Show gridlines on both axis
set pm3d interpolate 1,1
unset key
###---Plot the Graph###---
splot "plastoquinone-scan-a3-formatted.txt" with pm3d # For a single plot
#----------------#
# Set Multiplot #
#----------------#
#set multiplot layout 3,3
#splot "plastoquinone-scan-a1-formatted.txt" with pm3d
#splot "plastoquinone-scan-a3-formatted.txt" with pm3d,
#splot "plastoquinone-scan-b1-formatted.txt" with pm3d,
#splot "plastoquinone-scan-b2-formatted.txt" with pm3d,
#splot "plastoquinone-scan-b3-formatted.txt" with pm3d,
#splot "plastoquinone-scan-c1-formatted.txt" with pm3d,
#splot "plastoquinone-scan-c2-formatted.txt" with pm3d,
#splot "plastoquinone-scan-c3-formatted.txt" with pm3d
请建议如何控制多色时字体的设置，如何控制右侧出现的“键”字体（图中红色圆圈）。 由于声誉较低，我无法插入输入文件的链接:( 谢谢你的帮助。