I am plotting same plot as from here How to plot multiple y-axes?. But also i would like them to look like in the image below. With additional lines and tics, how can i do it?
1 Answer
As mentioned in the answer you linked, you can plot many plots on top of each other in the multiplot environment.
So, here you are plotting 6 plots on top of each other
- plot 1, 2, 3 for the data/functions
- plot 4, 5, 6 for the colored axes
- and plot 6 as well for the key on top of everything
In order to get the same scale for the plot and the "external" axes I would recommend to store the ranges and step sizes in the variables y10,y11,y1d, ...., such that you have to change the values only at one location.
Script:
reset session
set key opaque box noautotitle
set multiplot
set margins screen 0.3, screen 0.95, screen 0.95, screen 0.1 # l,r,t,b
# first plot
set xrange[0:10]
set xtics 2
y10 = -1.2
y11 = 1.2
y1d = 0.4
set yrange [y10:y11]
set ytics y1d
set format y '' # no ytic labels
set grid x,y
plot sin(x) lc "red"
# second plot
set border 0 # no border
unset tics # no tics
unset grid # no grid
y20 = -3.0
y21 = 3.0
y2d = 1.0
set yrange [y20:y21]
plot 3*cos(x) lc "green"
# third plot
y30 = -1.5
y31 = 1.5
y3d = 0.5
set yrange [y30:y31]
plot 3*sin(x)*cos(x) lc "blue"
# plot for axis 1
set lmargin screen 0.27
set border 2 lc "red" lw 2
set ylabel "Voltage" tc "red" offset 1.5,0
set yrange [y10:y11]
set format y
set ytics y1d nomirror
plot NaN
# plot for axis 2
set lmargin screen 0.17
set border 2 lc "green" lw 2
set ylabel "Current" tc "green" offset 0.5,0
set yrange [y20:y21]
set ytics y2d
plot NaN
# plot for axis 3 and key
set lmargin screen 0.08
set border 2 lc "blue" lw 2
set ylabel "Power" tc "blue" offset 1,0
set yrange [y30:y31]
set ytics y3d
plot NaN w l lc "red" ti "sin(x)", \
NaN w l lc "green" ti "3*cos(x)", \
NaN w l lc "blue" ti "3*sin(x)*cos(x)"
unset multiplot
### end of script
Result:
help border,help margins? Please show your script and your output.