Thanks for kind replies. The issue raised is minor.

In my pique of frustration, I did not ask the question

I wanted to ask. The example expression

ezplot('x^2*sin(x+y^2)+y^2*exp(x+y)+5*cos(x^2+y)' ,[-10 10])

can be rendered with either FLTK or Qt, but the output

does not have the detail of the same expression plotted in

Matlab. By cookbooking in gnuplot the script

reset

set terminal pngcairo

set output 'implicit.png'

set contour

set cntrparam levels discrete 0

set view map

unset surface

unset key

set isosamples 500,500

set xrange [-10:10]

set yrange [-10:10]

splot x**2*sin(x+y**2)+y**2*exp(x+y)+5*cos(x**2+y)

(which I have no idea how to call from Octave)

approximates the detail of the Matlab plot. In Octave,

is it possible to get better detail out of the 'later'

toolkits by adding a sampling switch of some kind?

Gary Bollenbach

Octave 4.2.2 on Mint19, gnuplot 5.2

(I don't have Matlab, I just saw the plot in a book.)

--

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http://octave.1599824.n4.nabble.com/Octave-General-f1599825.html