interaction - Interactively show/hide plots in gnuplot? -

(just documenting - self-answer follow)

in gnuplot, can have 2 plots (say, sin(x) , cos(x) this:

gnuplot> plot sin(x), cos(x) 

which provides graph this:

i'd interactively click on something, , (say) hide sin(x) - again click somewhere mouse show it.

i've seen (in http://gnuplot.sourceforge.net/demo_canvas_4.6/) possible html5 canvas terminal - in firefox, can click on small circled 1 in demo, show/hide 1 of plots there. unfortunately, seems canvas terminal available gnuplot 4.6 - while i'm using 4.4.

is there similar sort of facility interactive terminals in earlier versions of gnuplot?

indeed, turns out there - couldn't find in documentation.

first need click on wrench icon ("open configuration dialog") on wxt terminal window; in there, there option "toggle plots on/off when key sample clicked", should enabled.

if is, 1 can click on function entry in legend (that is, key), , visibility of particular plot toggled there.

nb: phrase "key sample" confused me, because if plot data of, say, 2 points (say, (0,0) , (1,1)) with, say, linespoints, you'd "points" @ (0,0) , (1,1), , line connects them; have considered "points" "key samples" (in analogy "key frames"), whereas line represent "interpolated samples" - not meaning here; here clicking on "key sample" means clicking on entry in legend!

hope helps someone,
cheers!