Returns an SVG path d string for the given symbol type and size. The path is centered at the origin — use transform="translate(x,y)".
d
transform="translate(x,y)"
One of the SYMBOLS_FILL types.
Approximate area in square pixels (default 64, matching D3).
Returns an SVG path
dstring for the given symbol type and size. The path is centered at the origin — usetransform="translate(x,y)".