Write down your new script and almost INSTANTLY (just seconds because an instant is an infinitesimal moment in time lol) visualize and/or download the new output. Just write and/or copy&paste your new math data and/or script in the editor-box below and get your plot-graph-... in REALTIME! PORTABLE: just a browser!
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demo 1  demo 2  demo 3  demo 4  demo 5  demo 6

set terminal svg size 600,400 enhanced fname 'arial' fsize 10 butt solid set output 'out.svg' # set terminal svg size 600,400 dynamic enhanced fname 'arial' fsize 10 mousing name "contours_18" butt solid # set output 'contours.18.svg' set view 60, 30, 0.85, 1.1 set samples 25, 25 set isosamples 26, 26 set contour base set cntrparam bspline set title "3D demo - contour of Sinc function" set xlabel "X axis" set ylabel "Y axis" set zlabel "Z axis" set zlabel offset character 1, 0, 0 font "" textcolor lt -1 norotate splot [-12:12.01] [-12:12.01] sin(sqrt(x**2+y**2)) / sqrt(x**2+y**2)

Output: