Nothing
To use JuliaCall
package for julia engine in R Markdown document.
Just set the engine for julia to JuliaCall::eng_juliacall
like this:
knitr::knit_engines$set(julia = JuliaCall::eng_juliacall)
## This is a julia language chunk. ## In julia, the command without ending semicolon will trigger the display ## so is JuliaCall package. ## The julia display will follow immediately after the corresponding command ## just as the R code in R Markdown. a = sqrt(2) a = sqrt(2); b = begin println(sqrt(2)); sqrt(2) end
And you can also get access to julia variables in R code chunk quite easily
using JuliaCall
, for example:
## This is a R language chunk. ## In the previous julia chunk, we define variable a, ## we can use functions in JuliaCall to get access to it. JuliaCall::julia_eval("a") + JuliaCall::julia_eval("b")
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