Simple collection of outputs in certificate

[sje30]

I'd love to replace the kind of crufy solution I have now for including manifest files in the certificate, e.g. I have :

{r, echo=FALSE, fig.cap=manifest_df[1:4,"comment"]}
knitr::include_graphics(manifest_df[1, "dest"])
cat('\n\n')
knitr::include_graphics(manifest_df[2, "dest"])
cat('\n\n')
knitr::include_graphics(manifest_df[3, "dest"])
cat('\n\n')
knitr::include_graphics(manifest_df[4, "dest"])
cat('\n\n')

whereas what I'd like is a simple chunk that by default will include all the manifest files intelligently into the Rmd. e.g. if given a figure (png/pdf/jpg), it calls include_graphics, else for csv it shows a tiblle summary of the data frame... just need some R magic to get it working.

[sje30]

maybe we should go the other way, and simplify it so that each code chunk does one output?

[nuest]

One chunk per output is a very good idea.

I'd not be sure though that you can automate this fully, so I'd tend towards not trying to automate anything but provide snippets for the author of a report.