rotating the xy plane of a 3D graph in gnuplot - gnuplot

I plotted a 3D graph with gnu plot, with the following commands
set term png
#set term post enh color eps font "Times-Roman, 15"
set output "order.png"
#set title ""
set key outside right bottom vertical reverse enhanced samplen 2 spacing 1.0 width 2 height 1
#set key font "Times-Roman,15"
set xlabel "\eta"
set ylabel "r"
set zlabel "\rho_0"
set xyplane 0
#set view 120,50
set grid
set grid ztics
set xtics 0.5
set ytics 0.5
set ztics 0.05
set tics font "Times-Roman,15"
set tics scale 0.5
set xrange [0:1] noreverse nowriteback
set yrange [0:1] noreverse nowriteback
set zrange [0:0.12] noreverse nowriteback
splot "order0.txt" u 1:2:3
and the plot is :
but I want it to be like the original plot(which is taken from a peper):
I searched the internet, but I just found
set view
which doesn't produce the one that I want.

It sounds as if you would like to rotate the plot around the z-axis so that the r-axis is in "front". The second number in the "set view" command will do that. Try "set view 45 300". Sorry if you meant something else.

Related

I'm trying to use multiplot to combine plot and splot but x,y labels seem to be shifted

set xrange [-2:2]
set yrange [-2:2]
set xlabel 'X'
set ylabel 'Y'
set samples 300
set isosamples 300
set lmargin screen 0.1
set rmargin screen 0.9
set tmargin screen 0.9
set bmargin screen 0.1
set multiplot
set pm3d map
set palette grey
unset colorbox
splot x**2+y**2 < 1 ? 0:0.2
unset pm3d
plot sin(x) lc 0
This code displays the problem - different positionning of x/y labels by splot, plot.
Although you have the margins identical for both plots for some reason (which I don't know) the labels are not at identical positions. However, since the label values are identical anyway, no need for trying to plot the second labels on top of the first ones. Simply skip all labels and tics of the second plot.
Code:
### remove shifted tics in multiplot
reset session
set xrange [-2:2]
set yrange [-2:2]
set xlabel 'X'
set ylabel 'Y'
set samples 300
set isosamples 300
set lmargin screen 0.1
set rmargin screen 0.9
set tmargin screen 0.9
set bmargin screen 0.15
set multiplot
set pm3d map
set palette grey
unset colorbox
splot x**2+y**2 < 1 ? 0:0.2
unset pm3d
unset xlabel
unset ylabel
unset xtics
unset ytics
plot sin(x) lc 0
unset multiplot
### end of code
Result:
It is quite possible that you can create your composite plot entirely with splot and therefore do not need to use multiplot, bypassing the whole issue. I realize that the example you give may be over-simplified but as it stands the plot can be created by
set xrange [-2:2]
set yrange [-2:2]
set trange [-2:2]
set xlabel 'X'
set ylabel 'Y'
set samples 300
set isosamples 300
set view map
set pm3d at b
set palette grey
unset colorbox
splot x**2+y**2 < 1 ? 0:0.2 with pm3d, \
'+' using 1:(sin($1)):(0) with lines lc "blue" lw 3
With gnuplot 5.2.8, the figure can be created with just one plot command:
pl [-2:2][-2:2] sample [0:2*pi] "+" us (cos(x)):(sin(x)) with filledcurve, sin(x)
Thus splot and multiplot are not needed here.
sample is needed to redefine the parameter range (only in case of first plot argument).
A documentation is here: https://github.com/gnuplot/gnuplot/blob/4a7a11e6b528ea362c943cf632fd21a518b15c54/docs/gnuplot.doc#L7856
PS: As you see it also works without $1 for your cairolatex terminal.

Gnuplot parametric surface plot hidden3d / pm3d border problem

The last couple of hours I've been trying to produce an acceptable-looking plot of a 3D-Object. Now i'm totally stuck at somehow making Gnuplot draw the borders in respect to my 3D-object in a right way. The code I use is this:
reset
set term pngcairo enhanced size 800,600
set output "plot.png"
set grid xtics ytics ls 3 lw 1 lc rgb 'gray'
set xzeroaxis
set yzeroaxis
set samples 30,30
set isosamples 30,30
set style line 100 lt 5 lw 0.5 lc black
set palette gray
set cbrange [-1:1]
unset colorbox
set pm3d depthorder hidden3d implicit
set pm3d lighting primary 0.50 specular 0.6
set parametric
set urange [0:2*pi]
set vrange [0:2*pi]
set xrange [-3.1:3.1]
set yrange [-3.1:3.1]
set zrange [-1.1:1.1]
set xyplane at -1
set view 121,115
set xtics offset first 0,0, -0.1
set ytics offset first 0,0, -0.1
set ytics -2,1,2
set xtics -2,1,2
unset border
set border 4095 front lt black linewidth 2.000 dashtype solid
splot (2+cos(u))*cos(v),(2+cos(u))*sin(v),1*sin(v) lc rgb '#666666'
set output
If you plot that code it results in an image like this:
3D-Object Plot
As you can see the layering of Borders/Axes and Graph is somehow messed up. I spent some time playing around with different terminal types, or set border back / front / behind, or basically all the other options, but i could not succeed in making Gnuplot draw this the right way, which means, the borders surround my Object.
The only compromise solution i could find, is, if i choose certain different view-points Gnuplot gets it all right. But for the one i want the drawing does not work..
I would be very happy about any suggestions or hints!

How can I get rid of the ticmarks on the x2 & y2 axes of a gnuplot?

Here is a picture of the problem I am facing: Gnuplot
Additional unlabelled tics appear in my gnuplot on the x2&y2 axis. This is how I have defined the plot:
set grid lt -1 lw 0.709
set border 3 lt -1 lw 0.992
set size ratio 0.71
set view 60, 30, 1, 1
set ticslevel 0.5
#fonts
set title font "IsonormD,16"
#set xtics font "IsonormD,16"
set ytics font "IsonormD,16"
set key font "IsonormD,16"
set xlabel font "IsonormD,16"
set ylabel font "IsonormD,16"
after this come only labels and the plot command. Sorry it seems I can't add a picture but would be thankful for advice.
You can unset those mirrored tics with
set tics nomirror
or add the nomirror option to your other ytic and xtic settings.

Gnuplot Multiplot Individual Plot Sizes + Labels

I am currently trying to produce a decent multiplot in Gnuplot. Sadly I ran into some problems.
As the y-axis for both figures is the same I want to only label and tic it once, however I cant remove those from only the left plot.
Secondly I want to increase the width of the left plot while decreasing the one of the right.
Here is a picture of what I got so far, the code is below.
Plot so far
set term postscript eps enhanced color "Helvetica" 10
set output "dosband.eps"
set title "Bandstructure and Density of States"
#
set multiplot layout 1,2 \
margins 0.075,0.98,0.1,0.98 \
spacing 0.02,0.08 #margins: left,right,bottom,top; spacing: vertical, horizontal
set title "Bandstructure"
plot 'plotband.dat' using 1:2 with lines lt 1 lw 0.5 linecolor rgb "black" notitle
set xlabel "Density [states/eV]" #dont ask me why I have to swap the xlabels around
set ylabel "Energy [eV]"
#
set title "Density of States"
plot 'plotdos.dat' using 1:2 with lines lt 1 linecolor rgb "black" notitle
set xlabel "K-Points"
unset multiplot
Thanks in advance for any answers!
As noted by #Christoph, using explicit margins is one of the solutions. In your particular case, you could proceed as:
#dimensions are in screen units
width_left = 0.48
width_right = 0.25
eps_v = 0.12
eps_h_left = 0.1
eps_h_right = 0.05
unset key
set multiplot
set tmargin at screen 1. - eps_v
set bmargin at screen eps_v
set lmargin at screen 0.1
set rmargin at screen eps_h_left + width_left
set xr [0:1.4]
set xtics 0,0.2,1.4
set yr [-40:5]
unset ytics
set y2r [-40:5]
set y2tics in mirror
set format y2 "" #draw ticks but no tic labels
set title "Plot 1"
set xlabel "title 1"
plot 1/0
set lmargin at screen 1. - (width_right + eps_h_right)
set rmargin at screen 1. - eps_h_right
set xr [0:100]
set xtics 0,25,100
unset y2tics
set yr [-40:5]
set ytics in mirror
set mytics 1
set title "Plot 2"
set xlabel "title 2"
set ylabel "Energy [eV]"
plot 1/0
This produces:
In case the Energy [eV] label is supposed to be moved completely to the left, one can adjust the spacings/tics accordingly...

multiplot - stacking 3 graphs on a larger canvas

I have been trying very unsuccessfully to stack 3 graphs together in a multi-plot layout on a canvas that is a ratio of 2:3(width by height).
set terminal postscript eps enhanced "Helvetica" 24 color
set output "data.eps"
set timefmt "%s"
#set size 1.0,1.5
#set bmargin 2
#set tmargin 2
set size 1.0,1.5
set multiplot layout 3,1
set size 1.0,0.5
set tmargin 2
set bmargin 0
set ylabel 'Distance'
set format x ""
set ytics nomirror font "Helvetica,10"
set key top
plot "trace1.dat" using 1:3 axes x1y1 title "distances" with lines lw 2 lc rgb 'blue'
set size 1.0,0.5
set bmargin 0
set tmargin 0
set ylabel 'Power (W)'
set format x ""
set ytics nomirror font "Helvetica,10"
set key top
plot "trace2.dat" using 1:2 axes x1y1 title "device" with lines lw 2 lc rgb 'red'
set size 1.0,0.5
set bmargin
set tmargin 0
set xdata time
set ylabel 'Power (W)'
set xlabel 'Time (EST)' offset 0,-2.8 font "Helvetica,32
set format x "%b %d, %H:%M"
set ytics nomirror font "Helvetica,10"
set xtics nomirror rotate by 90 offset 0,-2.0 out font "Helvetica,10"
set key top
plot "trace3.dat" using 1:2 axes x1y1 title "aggr" with lines lw 2 lc rgb 'blue'
unset multiplot
When I do something like above, I get the plot shown below, there's a lot of blank space at the top of the canvas and the 3 multiplot graphs seem to overlap each other.
Any kind of help or pointer will be greatly appreciated.
In order to use a bigger canvas, you must use the size option when setting the terminal, e.g.:
set terminal postscript eps enhanced size 10cm,15cm
set size just changes the plot size relative to your canvas. To see this, consider
set terminal wxt
set size 1.0,1.5
plot sin(x)
Parts of the plot disappear, because it is much too high with respect to the canvas.
To stack three plots with same heights, in my opinion its best to use fixed margins:
set terminal pngcairo size 600, 900
set output 'stacking.png'
set lmargin at screen 0.15
set rmargin at screen 0.95
TOP=0.98
DY = 0.29
set multiplot
set offset 0,0,graph 0.05, graph 0.05
set xlabel 'time'
set ylabel 'ylabel 1' offset 1
set tmargin at screen TOP-2*DY
set bmargin at screen TOP-3*DY
set ytics -1000,500,1000
plot 1150*cos(x) title 'First'
set xtics format ''
unset xlabel
set ylabel 'ylabel 2' offset 0
set tmargin at screen TOP-DY
set bmargin at screen TOP-2*DY
set ytics -100,50,100
plot 101*sin(x) title 'Second'
set ylabel 'ylabel 3' offset -1
set tmargin at screen TOP
set bmargin at screen TOP-DY
set ytics -8,4,8
plot 10*sin(2*x) title 'Third'
unset multiplot; set output
The result is (with 4.6.3):
In order to avoid overlapping labels of the ytics, you must change the range where the tics are drawn, e.g. with set ytics -100,50,100, which puts ytics between -100 and 100 in steps of 50. Using set ytics rangelimited doesn't work
To increase the distance between the plot curve and the border, use set offset with graph coordinates, like done in the above script.
I started with the lowest plot, because only that has x labels and an xlabel.
You need to use set origin, too.
set terminal postscript eps enhanced
set output "data.eps"
set size 1.0,1.5
set multiplot layout 3,1
set size 1.0,0.5
set origin 0,1
...
plot ...
set size 1.0,0.5
set origin 0,0.5
...
plot ...
set size 1.0,0.5
set origin 0,0
...
plot ...
unset multiplot

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