Re: [Gnuplot-info] rotate labels by data column

[theozh <th...@gm...>]

well, you could do it with setting labels...

However, the example below is a bit a cumbersome workaround, but it
seems to do the job in a wxt terminal.
- the first data column is used to define the position
- the second data column gives the label text
- the third data column defines the rotation
The first 3 plot command are not plotting anything but extracting
numbers and text into the variables a,b,c.

Hope this helps...
Maybe there is a more elegant version?


reset

$Data <<EOD
1 one -30
2 two -60
3 three -90
4 four -120
5 five -150
6 six -180
7 seven -210
8 eight -240
9 nine -270
10 ten -300
11 eleven -330
12 twelve -360
EOD

set xrange [0:10]
set yrange [0:10]
set size square
unset xtics
unset ytics
n = 12.   # . for floating point division
set angles degrees
do for [i=1:n] {
  plot $Data u 1:(a=$1,0/0) every 1:1:i-2:0:i-1:0 notitle;
  plot $Data u 1:(b=stringcolumn(2),0/0) every 1:1:i-2:0:i-1:0 notitle;
  plot $Data u 1:(c=$3,0/0) every 1:1:i-1:0:i-1:0 notitle;
  set label i center at (5+5*cos(-i/n*360+90)),(5+5*sin(-i/n*360+90))\
sprintf("%s",b) rotate by c font "Arial,20";
  }

  plot $Data u 1:1 notitle     # or whatever else you need to plot