Error bar series are created by the errorbar
function. Each
hggroup
element contains two line objects representing the data and
the errorbars separately. The properties of the error bar series are
color
linewidth
linestyle
marker
markeredgecolor
markerfacecolor
markersize
xdata
ydata
ldata
udata
xldata
xudata
xdatasource
ydatasource
ldatasource
udatasource
xldatasource
xudatasource