0

From How to get a radial(polar) plot using gnu plot?

My data:

theta dB
  0  0.00
 30  0.09
 60 -0.26
 90 -0.26
120 -0.35
150 -0.35
180 -0.35
210 -0.35
240 -0.26
270 -0.09
300 -0.26
330  0.00
360  0.00

Axis will not start at 0 but it start at -2 to 0. How can i fix this code?

enter image description here

Community
  • 1
  • 1
user3296637
  • 1
  • 3
  • 1
    What about a *minimal* script and the output which show your problem? – Christoph Feb 24 '14 at 08:41
  • my script use follow from that link and i change set xrange [-1:1] set yrange [-1:1] set xtics (-1,"" -0.5, "" 0, 0.5””, 1) set ytics -1, 0.5,1 http://image.ohozaa.com/view2/xqlka1wvnzsmAwTt – user3296637 Feb 24 '14 at 10:59
  • I know, that you took some code from that link. But it is a long script, and doesn't show your problem. See my answer for a rather short script, like you should have provided. – Christoph Feb 24 '14 at 19:13

1 Answers1

0

The range in polar mode is controlled by set rrange:

set polar
set grid polar
set angles degree
set size ratio 1
unset border
unset xtics
unset ytics

set rrange [-2:0]
plot 'file.txt' with lines

Result with 4.6.3 is:

enter image description here

Christoph
  • 47,569
  • 8
  • 87
  • 187