How can I give a dataframe to params?

[qqwxp]

It seems that only string, numeric, and logical value can be passed to params in rmarkdown file.

However, sometimes I want to pass a dataframe or .rdata, which is preprocessed in the previously. I know one practice is to export the object to a file, then give the file path to the rmarkdown params. But when the object is large (i.e. omics data), and exploratory analyses performed for many times with many processed objects, this practice results in much disk space occupied.

Is there any trick to give the processed object (i.e. dataframe, .rdata, rds) to the rmarkdown?