Maybe make the two iso-arrival-time contours (the lemacon and the
lemniscate) different line type or different color? So they
are easier to distinquish when one is trying to move them around
(they often intersect, and hard to tell apart). Maybe solid and
dashed magenta lines?
we let this aside for the moment.
but there is a visual aid now, mouseover a element fades all the others to semi opaque, that should help not getting lost...
Maybe make the two iso-arrival-time contours (the lemacon and the lemniscate) different line type or different color? So they are easier to distinquish when one is trying to move them around (they often intersect, and hard to tell apart). Maybe solid and dashed magenta lines?
Liliya L R Williams