[Gnuplot-info] size of an arrow with logscale x

[Francky L. <Fr...@Le...>]

Dear,

the following gives errors on the size of arrow 20:

"pole.gp", line 132: arrow has x coord of 0; must be above 0 for log scale!

Does anyone knows why this is?

Regards,

Francky

---------------

r_min = 0.01
mag_min_three_dB = -3.01

set xrange [0.01: 100]

set yrange [-40:0]
set ytics in -40, 10 nomirror
set mytics 2
set arrow 20 \
  from r_min/1.1, mag_min_three_dB \
  to   r_min,     mag_min_three_dB \
  head \
  size first 0.0005 \
  filled \
  linetype 1 \
  linewidth 2