[mac] Install R in pyenv + Jupyter-Lab environment

Purpose

Operation check environment

Prerequisites

Installation procedure

Package install R with Homebrew.

% brew casc install r

Enable the pyenv environment of the installation destination and start the R console from the terminal.

% pyenv local testenv
(testenv) % R
---
R version 4.0.3 (2020-10-10) -- "Bunny-Wunnies Freak Out"
Copyright (C) 2020 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin20.1.0 (64-bit)

(...Abbreviation...)

> 

Install IRkernel and register the kernel.

> install.packages('IRkernel')
> IRkernel::installspec()

Start Jupyter Lab and make sure the R kernel is available.

スクリーンショット 2020-12-24 9.36.16.png

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