Converting sf to sp in rmarkdown

[jsta]

I have two documents.

• An Rmd file with the following:

library(sf)
x = st_sfc(st_point(c(5,5)), st_point(c(6,9)), crs = 4326)
as(x, "Spatial")

• A build script with the following:

knitr::knit("test.Rmd", "test.md")

I am able to render the rmarkdown if I run knitr interactively. However, I if run the build script with Rscript I get an error:

## Error in as(x, "Spatial"): could not find function "as".

It does not seem to matter whether I set the envir argument to new.env() or globalenv().

[edzer]

It is well known that Rscript does not load methods, where R does. Start your script with an explicit library(methods) if you want it to work like it does in R.

[jsta]

Gah, thanks!