I am trying to plot three different plots on the same canvas using the multiplot mode of gnuplot (version 5.0.1)
I want an arrangement of these plots in a particular way: final plot should show 2 rows with plot A in the upper row while plots B and C should appear in the lower row side-by-side as if for a lower row we had something like:
"set multiplot layout 1,2"
How can this be achieved?
Thanks in advance
you need to do the multiplot with the most "refined" grid, in this case 2x2 and then specify the size of each plot.
set multiplot layout 2,2
set size 1,0.5 # the first one has to be larger
plot sin(1*x)
set multiplot next # we want to skip the second (upright position)
set size 0.5,0.5 # the second and third have to be 0.5x0.5
plot sin(2*x)
plot sin(3*5)
unset multiplot
or as suggested here https://stackoverflow.com/a/15906085/2743307 it might be simpler to do it upwards (6 lines instead of 8!) but you have to specify the plots in opposite order:
set multiplot layout 2,2 upwards
plot sin(3*x)
plot sin(2*x)
set size 1,0.5
plot sin(1*x)
unset multiplot
Related
Multiplot scale
I don't really understand the idea behind the scale option in the multiplot command of gnuplot.
set multiplot layout 2,2 scale x,y
There can be only one pair of values for the whole multiplot - what is it possibly used for? Is it really just for scaling all the graphs in the multiplot? What for?
It would make sense to me, if you could assign scale factors the the individual layout parts, in that I would say: first column takes 70% of the width, second column takes 30% etc but here?
I'd appreciate any explanation! Plus, is there a built-in function to generate multiplots using the "layout" option in the described manner?
Multiplot Layout
I want a multiplot layout consisting of a 4rows,2columns grid. Both columns should fill 45% of the space each, leaving a 10% white gap at the right which will be used for a label set right next to the second column via set label at graph 1,0.5 "text". (Actually, this means a 45% / 55% ratio of the two columns.)
This works with this MWE
set multiplot
mystring = "This is\na multiline\nlabel"
width = 0.45
height = 0.25
#1 1
set origin 0,1-height
set size width,height #remains the same
plot sin(x)
#1 2
set origin width,1-height
set label at graph 1,0.5 offset 2,1 mystring
plot cos(x)
unset label
#2 1
set origin 0,1-2*height
plot sin(x*2)
#2 2
set origin width,1-2*height
mystring = "This "This is\na different\nlabel"
set label at graph 1,0.5 offset 2,1 mystring
plot cos(x)
unset label
#etc...
unset multiplot
However, I want to put some labels (no title etc) above the first row. If I make space via set tmargin <val> for the first row, then the plots get squished, not shifted. Is there a way to somehow "add whitespace" around the plots, the top in particular? Or would I need to make the height variable a tad smaller and adjust accordingly?
Plus, I made no size settings, as you see, but used proportionals in the range of [0,1]. When using the epslatex terminal, I'll provide overall size information. Can I expect the ratios to preserve?
I have created two plots in multiplot mode using epslatex as output terminal. The y axis labeling is different for both the plots.The first plot's y axis ranges from [0:45] and the second plot's y-axis ranges from [-5e-008 to 4e-007]. Due to the different widths of the y-axis labels, the width of the second plot is less than that of the first plot. I have tried the available scaling options but they do not work. Is it possible to edit the plot so that I can have the same width for both the plots irrespective of the y-axis range?
The problem you're experiencing can be reproduced by doing something like so:
set multiplot layout 2,1
plot sin(x)
plot 100000*sin(x)
The left margins are clearly not aligned. To fix this, you can try an explicit definition of where the margins lie:
set multiplot layout 2,1
set lmargin at screen 0.15
plot sin(x)
plot 100000*sin(x)
If your images are side by side, you can adjust the margins taking the appropriate offset into account:
set multiplot layout 1,2
set lmargin at screen 0.15
plot sin(x)
set lmargin at screen 0.5+0.15
plot 100000*sin(x)
I am using an analytical 2D function to make a contour plot. However, I do not get a smooth contour. (For example it should have been a circle but I get a oval shape.)
Here is the code snippet I am using:
splot f(x,y) t ''
set dgrid3d; set view 0,0
set cntrparam levels 10
set contour base
set nosurface
unset ztics
unset zlabel
set border 15
replot
Sounds like a matter of scale of the axes.
You can change the ranges of the axes using the xrange/yrange, etc
See, for example http://gnuplot.sourceforge.net/docs_4.2/node294.html
I have an interactive perl script which uses data from mysql to generate many plots through the Chart::Gnuplot package. There are times when the graph size is overloaded with too many plots.
I would option to generate the gnuplot image containing only the legend (no graph).
I don't know if this would help, but...
plot [0:1] [0:1] NaN title "Hello" #Just the label in the legend.
or...
plot sin(x),NaN title "Boo" #Plots sin(x) (properly labelled) and a second label "Boo"
Of course, this still has the border and other things. You can unset those...unset border and unset tics
I have two files that has the time as x axis and a value. I need to overlay these two on a single plot. Currently i tried it using GNUplot, but struck in the middle. Here is a sample file
01:03:05 6
01:03:15 6
and another file
01:03:55 6
01:04:10 6
I need to plot these two files (say x mark and some other symbol for differentiation) in a single plot. I dont know if it is possible to do that in GNUplot. Currently I have created two grids for each file. But I need both in a single plot. Here is what I have written
set multiplot layout 1,2 # engage multiplot mode
set xdata time ## these three lines control how gnuplot
set timefmt '%H:%M:%S' ## reads and writes time-formatted data.
set format x '%H:%M:%S' ##
set xtics 05 # make time spacing of 2 minutes
plot 'AAA' u 1:2 # plot the first data set
plot 'BBB' u 1:2 # plot the second data set
unset multiplot
Can anyone familiar with GNUplot or any other tool (working in linux) can help me.
In order to plot multiple lines in a single plot, simply put them in a single plot command like
plot 'AAA' u 1:2, 'BBB' u 1:2
There are numerous examples out there that give you a good start with gnuplot. This one for example shows how to plot multiple lines in one plot.
The multiplot command you are using in your script would also make it possible to have multiple plot windows like shown here. You can adjust the position of each subplot by:
set size XSIZE,YSIZE #see `help set size`
set origin XORIGIN,YORIGIN #see `help set origin`
or (if you have gnuplot 4.2 or newer):
set lmargin at screen XMIN #see `help margin`
set rmargin at screen XMAX
set tmargin at screen YMAX
set bmargin at screen YMIN