/noteb

Jupyter notebooks with C# and R running

Primary LanguageJupyter Notebook

Installing jupyter notebook with a c# kernel

  • Check if you installed python with visual studio.

Go to the start menu and start typing Python

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Right click on python and follow the Open File Location until you find the place where python is installed.

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  • Or type: where python in the command line.

  • If so, add python to the PATH of your environment. On my installation, the paths to Python were as follows. I had to add the Scripts path for the pip installation to be in the command line.

    • C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\
    • C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\Scripts

  • install jupyter using pip which was installed with visual studio, make sure to run in an administrator shell

    • pip install jupyter

  • check that jupyter now starts

    • jupyter notebook

  • Now get the list of installed jupyter kernels:

    • jupyter kernelspec list
Available kernels:
  c:\program files (x86)\microsoft visual studio\shared\python37_64\share\jupyter\kernels\python3

  • Install the latest version of .net try dotnet tool install dotnet-try -g

  • finally install the .net kernel for jupyter with the command: dotnet try jupyter install

  • test the kernel is now installed with jupyter kernelspec list

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launch jupyter notebook

In the command line, type: jupyter notebook

A browser window should open and the terminal should display:

C:\Repos\noteb>jupyter notebook
[I 22:14:55.617 NotebookApp] JupyterLab extension loaded from c:\program files (x86)\microsoft visual studio\shared\python37_64\lib\site-packages\jupyterlab
[I 22:14:55.618 NotebookApp] JupyterLab application directory is c:\program files (x86)\microsoft visual studio\shared\python37_64\share\jupyter\lab
[I 22:14:55.625 NotebookApp] Serving notebooks from local directory: C:\Repos\noteb
[I 22:14:55.626 NotebookApp] The Jupyter Notebook is running at:
[I 22:14:55.627 NotebookApp] http://localhost:8888/?token=XXXXXXXXXXXXXXXXXXXc1ee1dfccc0a6624263d584b8ca4c
[I 22:14:55.628 NotebookApp]  or http://127.0.0.1:8888/?token=XXXXXXXXXXXXXXXXXXXc1ee1dfccc0a6624263d584b8ca4c
[I 22:14:55.629 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).  [C 22:14:55.737 NotebookApp]

    To access the notebook, open this file in a browser:
        file:///C:/Users/xxxxxx/AppData/Roaming/jupyter/runtime/nbserver-17608-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/?token=XXXXXXXXXXXXXXXXXXXc1ee1dfccc0a6624263d584b8ca4c
     or http://127.0.0.1:8888/?token=XXXXXXXXXXXXXXXXXXXc1ee1dfccc0a6624263d584b8ca4c
[I 22:15:16.852 NotebookApp] Kernel started: be6910a0-92f0-4ec0-a26c-d8274b44cd6d

The main page of the Jupyter notebook allows you to see the notebooks available in the folder and to create new ones.

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Hello world

Create a new C# notebook. Then type

using System;

in the first cell. I executed it and then typed:

Console.WriteLine("Hello World");

in the second cell. Executing it shows us that the C# Kernel is working.

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#r is used to reference a dll or a nuget package. If you prefix the command with "nuget:" then the jupyter notebook will download the nuget and add it as a reference. Then as in usual c#, you must reference it.

Installing an R kernel for jupyter notebook

To install R Tools for Visual Studio, install the Visual Studio Extension R Tools for Visual Studio 2019, which was in preview when I looked. Once this is installed, you must install the Microsoft R client. This option will be presented if you go to the "R Interactive" window.

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I have R installed with visual studio, so I launched visual studio in admin mode to be able to have my R directory writable, went to the R Tools menu at the top and selected "R Interactive".

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From the command line of R, I typed in the following commands. Installation guide R

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install.packages('IRkernel')
IRkernel::installspec(user = FALSE)

I got the following output after installing the IRKernel into Jupyter [InstallKernelSpec] Installed kernelspec ir in C:\ProgramData\jupyter\kernels\ir. Following this, you can check on the command line that the R kernel appears in the list of Jupyter Kernels with jupyter kernelspec list, this should show the ir kernel installed:

Available kernels:
  ir             C:\ProgramData\jupyter\kernels\ir

Use R to show a some math

Create a new R notebook and type in the first cell:

demo(plotmath)

Executing this should show you the following long list of tables with mathematical symbols.

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