Julia1.x安装

• 删除julia-1.0

$ jupyter kernelspec list
Available kernels:
  julia-1.0    /Users/keke.zhaokk/Library/Jupyter/kernels/julia-1.0
  julia-1.1    /Users/keke.zhaokk/Library/Jupyter/kernels/julia-1.1
  python3      /opt/anaconda3/share/jupyter/kernels/python3

$ jupyter kernelspec uninstall julia-1.0
Kernel specs to remove:
  julia-1.0           	/Users/keke.zhaokk/Library/Jupyter/kernels/julia-1.0
Remove 1 kernel specs [y/N]: y
[RemoveKernelSpec] Removed /Users/keke.zhaokk/Library/Jupyter/kernels/julia-1.0

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比较容易的安装Julia 1.2

• 删除依赖再安装相关的包

$ rm -rf ~/.Julia ; julia  install.jl 
$ cat  install.jl
using Pkg

# install IJulia
#ENV["JUPYTER"] = "/opt/anaconda3/bin/jupyter"
Pkg.add("IJulia")

# install Pylot
ENV["PYTHON"] = "/opt/anaconda3/bin/python"
#Pkg.add(Pkg.PackageSpec(name="PyCall", rev="master"))  ## ] <enter> add PyCall#master
Pkg.add("PyCall") 
Pkg.add("PyPlot")

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• 测试代码

using PyPlot 
x = range(0,stop=2*pi,length=1000); y = sin.(3*x + 4*cos.(2*x))
plot(x, y, color="red", linewidth=2.0, linestyle="--")

• 安装 pyplot 没成功，解决如下
  https://stackoverflow.com/questions/51800232/error-using-pyplot-in-julia-v1-0-in-windows-10-x64