[R] How to add error bars to a line xyplot (lattice package)

[Jun Shen]

Dear list,

I have a couple of lines (superimposed) in an xyplot and just want to add
error bars to each of the data point. It's been a while since this question
was asked last time. But the segplot from latticeExtra is not straight
forward. Just wonder if there is a better way to do this. Appreciate for
any comment. Thanks.

Jun

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