Dictionary: data.table/pandas

This post contains translations from Python pandas to R data.table. All examples are based on Titanic dataset (can be easily found on the internet).

Python win32com multithreading

Some notes on MS COM programming in Python. It is not a well documented topic. The only really helpful source is book Python Programming On Win32. Here I explain how to run two different COM event handlers in two separate threads. Example provided implements simple interaction with Excel app. But the method is universal, and I used it for accessing ITinvest SmartCOM API.

BeagleBone desktop forwarding via SSH

How to access a remote graphics environment via GNU/Linux machine? In this example I push LXDE though an SSH channel between BeagleBone Black and Ubuntu 14.04 laptop. I suppose that X11 SSH forwarding itself is already configured.

Initialise X server at display 1 on your client device. This command automatically redirects to the virtual terminal 8.

$ sudo xinit -- :1

Using white terminal at the top left corner establish SSH connection with X11 forwarding and run lxsession:

$ DISPLAY=:1 ssh -X root@192.168.7.2 lxsession

Enjoy. Closing the white terminal leads to the end of the session.