#
# Ethan A Merritt - Feb 2007
# This demo requires support for 'set object ellipse'
# Also it uses the file 'random.tmp' created by random.dem
#
if ((GPVAL_VERSION == 4.3 || GPVAL_VERSION == 4.2) \
&&  (!strstrt(GPVAL_COMPILE_OPTIONS,"+OBJECTS"))) \
    print ">>> Skipping demo <<<\n" ; \
    print "This copy of gnuplot was built without support for placing ellipses\n" ; \
    exit ;


unset key
set xrange [-8:8]
set yrange [-8:8]
set size ratio 1.0
set zeroaxis
set border 0
set xtics axis
set ytics axis
set tics scale 0.5
set format xy ""

set title 'Example of `set object ellipse`'

set object 1 ellipse center 1.5,1.0 size 2.,4. angle 20. front fillstyle empty border -1
set obj 2 ellipse center 1.5, 1  size 6, 12  angle 20 front fs empty bo 3

A = pi/9.
plot 'random.tmp' using (1.5 + $1*cos(A)-2.*$2*sin(A)):(1.0 + $1*sin(A)+2.*$2*cos(A)) with dots


Click here for minimal script to generate this plot