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Changcheng Li 2019-08-05
To use JuliaCall
package for julia engine in R Markdown document, just
set the language of the code chunk to be julia
.
## 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)
## 1.4142135623730951
Plots.jl
Plots.jl
is an easy to use and powerful julia package for plotting,
see https://github.com/JuliaPlots/Plots.jl for more detail. Before the
first time using Plots.jl
, you first need to install the package like:
import Pkg; Pkg.add("Plots")
After installation of the package, you can use it like this:
using Plots
gr()
## Plots.GRBackend()
plot(Plots.fakedata(50,5),w=3)
You can also get access to julia variables in R code chunk quite easily
using JuliaCall
, for example:
library(JuliaCall)
## 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.
julia_eval("a")
## [1] 1.414214
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