[R] how to plot this?

[Weiwei Shi]

Hi, there:

Suppose I have a couple of data.frames and each one has five columns
(one for x-axis, two for y-axis and two for std of y's.) There is
another dimensions (besides x and y) which is continuous. My question
is, how to plot such series of data frames in one plot (thus,
3-dimensional plot) AND multiple 2-D plots. I am not familar with R's
plotting utilities.

Thanks.

-- 
Weiwei Shi, Ph.D
Research Scientist
GeneGO, Inc.

"Did you always know?"
"No, I did not. But I believed..."
---Matrix III