Hydrogen: Question: How can one execute R code with hydrogen?

[ekoepplin]

I recently switched from R to Python and in that respect found hydrogen as my go-to-package for data analysis. I just read your blog post: https://blog.nteract.io/hydrogen-interactive-computing-in-atom-89d291bcc4dd, where you reference the possibility to run R code with hydrogen as well. May I ask you how to add this ability to hydrogen?
Thx.

[BenRussert]

Hydrogen is my go to as well!

There is some info on other kernels in our gitbook

Basically you need to install the ir kernel. Make sure you have r-language package installed for atom as well since there is no R support in atom by default.

[ekoepplin]

Hi @BenRussert, thx for your quick reply. I just followed https://irkernel.github.io/installation/ and installed r-language. Do I have to add that new infos to hydrogen somehow?

Ok, I suppose I have to add:
{"python" : "magicpython", "ir":"R"}, However not sure whether its correct.

So initializing hydrogen starts both Kernels. Question remains how to switch between them.

[BenRussert]

It should work without the custom kernel mapping for ir, magicpython needs the mapping since it would start an ordinary python kernel by default.

So initializing hydrogen starts both Kernels. Question remains how to switch between them.

If you have R file active it will start R. If you switch tabs to a python file and start a kernel there it will be python (magicpython in your case). Both will run until you shut down and you can tab back and forth as you please interacting with either kernel.

[ekoepplin]

@BenRussert thats super cool. everything is working as you have pointed out, thx!

[BenRussert]

@hugeme No prob. If there is anything you think could be better/clearer in the docs we would love a PR with your suggestions!