How to plot with error bars but without lines

[V.O. Dah]

Hello all.
I can not find a way how to plot with error bars but without the lines connecting the points.
For example:
x=linspace(0,1,10)
y=sin(x)
yerr=linspace(0,0.2,10)
# plot with points; no connecting lines, good
plot(x,y,'@')
# plot with errorbars;   connecting lines are plotted
errorbar(x,y,yerr,'~')

Could anyone please tell how can I get the plot I want?
Thank you.