[R] What is RDA file and how to open it in R program?

[Jittima Piriyapongsa]

Hi,

I have a set of gene expression data in .RDA file. I have downloaded
Bioconductor and R program for analyzing these data. Anyway, I am not sure how
to open this RDA file in R program (what is the command?) in order to look at
these data. And which package should I use for analyzing it e.g. plot the
expression image?

Thank you.
Jittima