I installed Julia 1.0, and want to make a simple plot. The first step is to type this on Julia:
However, an error occurs:
ERROR: UndefVarError: Pkg not defined.
The same thing happens when I type:
What's the best way to install a package in Julia? I use MacOS.
In Julia 1.0, there are two ways to install a package. First, you can do
using Pkg Pkg.add("Packagename")
or you can use the Pkg REPL mode by pressing
] (similar to
?, help mode, and
;, shell mode):
(v1.0) pkg> add Packagename
Julia 1.0 is brand new. It has been released a few days ago, so some packages aren't yet compatible with 1.0. Sometimes it helps to install the master branch of a package instead of the last tagged release. On my machine I had to do
(v1.0) pkg> add LaTeXStrings#master (v1.0) pkg> add PyPlot
to get PyPlot to work. Hope this helps.