MTH229

These can be accessed online through binder.

Helper files for using Julia with MTH229.

Documentation is available at mth229.github.io.

To use this package (and a plotting package) issue the command:

using MTH229
using Plots

This package can be installed like other Julia packages. For example:

import Pkg
Pkg.add("MTH229")

This package also installs and re-exports several other packages we make use of (Roots, SymPy, etc/) in MTH229 at the College of Staten Island.

This package does not install a plotting package. The Plots package is suggested. Here are some commands to ensure the interactive plotly backend is available:

Pkg.add("Plots")
Pkg.add("PlotlyBase")
Pkg.add("PlotlyKaleido")

In class, this package is used within a notebook environment, as installed and opened with:

Pkg.add("PyCall")
Pkg.add("IJulia")
Pkg.add("Conda")

using Conda
Conda.add("notebook=6.5.6") ## this is a workaround with Windows
Pkg.build("IJulia")
using IJulia
notebook()

Projects

MTH229 at CSI has several "projects." There are ipynb notebooks to be used from within IJulia.

These notebooks can be installed locally by copying and pasting then executing the following commands

Pkg.add("ZipFile")
using ZipFile
zf = "https://www.github.com/mth229/229-projects/archive/main.zip"
zarchive = ZipFile.Reader(download(zf))
dirnm = "./229-projects-main"
isdir(dirnm) && error("Directory $dirnm already exists")

mkdir(dirnm)

for f in zarchive.files
    nm = f.name
    occursin("ipynb", nm) || continue
    @show nm
    open(nm, "w") do io
        write(io, read(f, String))
    end
end

Running remotely

To run the MTH229 package remotely, we have three options:

• If registered in a class, we have been provided a service we call JuliaBox

• You can run freely through the resource-limited binder:

• Google colab offers a free service. To run this, you need to execute a command that downloads Julia and installs this package and a plotting package:

# Installation cell
%%capture
%%shell
if ! command -v julia 3>&1 > /dev/null
then
    wget -q 'https://julialang-s3.julialang.org/bin/linux/x64/1.10/julia-1.10.2-linux-x86_64.tar.gz' \
        -O /tmp/julia.tar.gz
    tar -x -f /tmp/julia.tar.gz -C /usr/local --strip-components 1
    rm /tmp/julia.tar.gz
fi
julia -e 'using Pkg; pkg"add IJulia MTH229; precompile;"'
julia -e 'using Pkg; Pkg.add(url="https://github.com/mth229/BinderPlots.jl")'
echo 'Now change the runtime type'

After this executes (which can take quite some time, as in a few minutes) under the Runtime menu select Change runtime type and then select Julia.

After that, in a cell execute the commands to set up this package and a plotting package:

using MTH229
using BinderPlots