Gnuplot 使用不同的颜色向下着色打印

我尝试在gnuplot中使用multiplot选项绘制几个图。我使用如下所示的脚本

#!/usr/bin/env gnuplot


#OUTPUT
#PNG
set terminal pngcairo size 600,550 enhanced dash #font "Arial-Bold,13" #fontscale 1.20
set output "Fill-Multi-plot-LDP-lyoSystemLast50ns.png"


#############################################################################

set style line 4 lt 1 lw 2.5  lc rgb "red"
set style line 5 lt 3 lw 2.5  lc rgb "forest-green"
set style line 6 lt 5 lw 2.5  lc rgb "blue"

#############################################################################
set macro
labelFONT="font 'Arial,18'"
scaleFONT="font 'Arial-Bold,14'"
scaleFONtt="font 'Helvetica,10'"
keyFONT="font 'Arial,10'"

#############################################################################

xsize = 0.80    # change this for expand in x direction
ysize = 0.22
xorigin = 0.022
yorigin = 0.02

#############################################################################
set xrange [-25.2:25.2] noreverse nowriteback
set yrange [0:2.5]  noreverse nowriteback
set xtic auto       @scaleFONT    # set xtics automatically
set ytic '' #0,0.2,0.4  @scaleFONT    # set ytics automatically
unset key

set size 1.0,1.0
set multiplot

#############################################################################
# plot A
set ylabel ""
set label "Distance in Angstrom" at -30.0,-0.22 @labelFONT
set label "Number Density" at -58,0.70  rotate by 90 left @labelFONT
set label "(e)" at 0,0.60   @scaleFONT
set origin xorigin,yorigin
set size xsize,(ysize+0.015)

plot    "bcm25perRS-251-300ns_head_tail_wat2.dat"   u 1:2 w filledcurves y1=0 fs transparent solid 0.35 ls 4, \
                ''          u 1:3 w filledcurves fs transparent solid 0.4 ls 5,\
                ''          u 1:4 w filledcurves fs transparent solid 0.5 ls 6


#################################################################################
# plot B
set xrange [-25.2:25.2]
set ylabel ""
unset label
set label "(d)"  at 0,0.60      @scaleFONT
set origin xorigin,(yorigin+0.19)
set size xsize,ysize+0.02

plot    "bcm25perS-251-300ns_head_tail_wat2.dat"    u 1:2 w filledcurves y1=0 fs transparent solid 0.35 ls 4, \
                ''          u 1:3 w filledcurves fs transparent solid 0.4 ls 5,\
                ''          u 1:4 w filledcurves fs transparent solid 0.5 ls 6


#################################################################################
## plot C
set xrange [-25.2:25.2]
set ylabel ""
unset label
set label "(c)" at 0,0.60   @scaleFONT
set origin xorigin,(yorigin+0.385)
set size xsize,ysize+0.02

plot    "bcm25perR-251-300ns_head_tail_wat2.dat"    u 1:2 w filledcurves y1=0 fs transparent solid 0.35 ls 4, \
                ''          u 1:3 w filledcurves fs transparent solid 0.4 ls 5,\
                ''          u 1:4 w filledcurves fs transparent solid 0.5 ls 6


#################################################################################
# plot D
set xrange [-27.3:27.3] 
set xtics auto
set ylabel ""
unset label
set label "(b)" at 0,0.60   @scaleFONT
set origin xorigin,(yorigin+0.58)
set size xsize,ysize+0.02

plot    "malto23per-251-300ns_head_tail_wat2.dat"   u 1:2 w filledcurves y1=0 fs transparent solid 0.35 ls 4, \
                ''          u 1:3 w filledcurves fs transparent solid 0.4 ls 5,\
                ''          u 1:4 w filledcurves fs transparent solid 0.5 ls 6

#################################################################################

# plot E
set xrange [-20.0:20.0] 
set xtics auto
set ylabel ""
unset label
set label "(a)" at 0,0.60   @scaleFONT
set origin xorigin,(yorigin+0.77)
set size xsize,ysize+0.02

plot    "malto12per-251-300ns_head_tail_wat2.dat"   u 1:2 w filledcurves y1=0 fs transparent solid 0.35 ls 4, \
                ''          u 1:3 w filledcurves fs transparent solid 0.4 ls 5,\
                ''          u 1:4 w filledcurves fs transparent solid 0.5 ls 6

#################################################################################


## plot F
set size 0.3,0.5
set origin 0.76,0.55
set bmargin at screen 0
set key center center
set border 0 
unset xlabel
unset ylabel
unset label
unset tics
set format x ""
set format y ""
set yrange [0:1]
plot 2 ls 4 t 'Head', \
     2 ls 5 t 'Chain', \
     2 ls 6 t 'Water'
#, \
#     2 ls 10   t '151-200ns', \
#     2 ls 13   t '201-250ns', \
#     2 ls 16   t '251-300ns'
unset multiplot

使用这段代码，我得到了如下所示的图

这里我面临的问题是图中标记为（a）的图。蓝色阴影必须向下。但它是向上的。其他数字（b）、（c）等是正确的

地物标签（a）的相应代码见代码第#（图E）#节。尤其是蓝色阴影的线条如下所示：（u 1:4 w填充曲线fs透明实心0.5 ls 6）

我不知道我在这里犯了什么错误

（注：代码和相应数字的顺序颠倒）

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非常感谢您对更正此代码的帮助。非常感谢。

您希望填充曲线和下x轴之间的区域。这是通过选项

x1

完成的：

plot 'file.dat' with filledcurves x1 fs transparent solid 0.5 ls 6

我想您可以为所有区域设置

x1