Pipe operator in R
Base R 4.1 introduced a new operator, called pipe (|>) that directs the result of left hand side (LHS) to the right hand side (RHS) as the first argument ...
Posts by Year
2025
2024
Find and replace all text (strings) interactivelly in Emacs
Steps to search and replace text (patterns) recursively in multiple files and directories using Emacs text editor.
Területdiagramok típusai és a folyamgráf
A következőkben az idősoros elemzésekben gyakran használt területdiagramok (areachart) típusaival fogunk foglalkozni. Ezek tipikusan az x tengelyen az idő di...
Statisztikai elemzés pspp-vel Emacs-en
Manapság sokféle környezet (Python Pandas, R, stb) kínál lehetőséget statisztikai elemzésre. Az SPSS talán az egyik legkönnyebben megtanulható alkalmazás, de...
2021
A minimal example for xaringan presentation
The following post is a minimal example of local xaringan presentation deployment that is independent of any R IDE.
Resize your plot within R
ggplot2::ggsave has reasonable defaults for image width and height that are equal to the size of the current graphic window. In my case it is the X11 device,...
Find-replace in multiple files recursively from Linux command line
It is a 2-steps process issued in one command from a terminal. (1) Use grep to find occurrences of the search-term, then (2) sed to replace with a new word. ...
Getting started with Python pandas
What to do with Python’s pandas library?
Python plotly.js bubble chart included in Jekyll content
Rstat is great in creating data visualizations even in interactive ones. However, publishing the results in Jekyll can be a challenge# and sometimes easier t...
Liquid syntax to list all post in a given categories
This liquid snippet will list all posts that contains “data visualization” category in Jekyll front matter. It also adds icons for tags and plot types. Cf. t...
Xaringan presentation in a Jekyll site
The xaringan R package is an R Markdown extension based on the remark.js JavaScript library to generate HTML5 presentations.
New COVID cases per million in selected East-Central-Europe countries
A mapping exercise
Severe material deprivation rate (SMDR) in V4 countries, 2005-2019
With the exception of Hungary severe material deprivation rate (SMDR) declined unanimously in V4 countries after the EU accession. Hungary was hit harder by...
Some features of “Minimal Mistakes” Jekyll theme
Jekyll is a static website generator written in ruby. This post demonstrate some of the features of Minimal Mistakes(MM) Jekyll theme. MM provides “helpers”...
Anatomy of an ancient magick command
ImageMagick is a software suit to manipulate images mainly from command line interface (CLI)1. It was created in 1987 and open-sourced in 1990. The convert c...
Collection of fractal images
I used xaos, gnofract4d and gimp to generate these images.
Video manipulating from the command line
There are several applications and online tools that can be used to convert, extract, resize, etc video content under GNU/Linux desktops. The following post ...
2020
Over or below the grey lines
Comparison of current and past mortality data shows the net death cost of current pandemic. Hungarian data on the bulk number of total deaths for the first e...
Adding capitals to “Eurostat-countries”
One can easily draw a map for 37 “Eurostat countries”. However adding capital cities to the map can be tricky. The following example will use {maps} package ...
Mapping Eurostat data
Recently, I found a post on mapping Eurostat data, which was written in 2016 by Markus Kainu. It is not too old, but an important function within {eurostat} ...
Weighted survey means with rstats
The following simple example will use European Social Survey (ESS) integrated datafile in order to plot unweighted and weighted distribution of the generaliz...