generates valid email cids — email

can be used as an argument to knitr::opts_knit. If you attach the images properly, you can then send knit emails including plots. See the formr OpenCPU module on Github for a sample implementation.

Usage

email_image(x, ext = ".png")

Arguments

x: image ID
ext: extension, defaults to .png

Value

A length-1 character string holding a cid: reference for inline email images, carrying the source path in its link attribute.

Examples

if (FALSE) { # \dontrun{
# Not run: meant to run inside a knitr session as the figure upload hook.
library(knitr); library(formr)
opts_knit$set(upload.fun=formr::email_image)
} # }