Software
Author and maintaner
rJavaEnv 
rJavaEnv: ‘Java’ Environments for R Projects
rJavaEnv is an R package to install specific version of Java runtime environment at the R project level and to manage multiple Java environments between projects.
Package homepage: ekotov.pro/rJavaEnv/
GitHub repo: github.com/e-kotov/rJavaEnv
spanishoddata 
{spanishoddata} - an R package to access Spanish open origin-destination matrices data based on mobile network data released by the Spanish government. In collaboration with Robin Lovelace and Eugeni Vidal-Tortosa.
Package homepage: rOpenSpain.github.io/spanishoddata/
GitHub repo: github.com/rOpenSpain/spanishoddata
{spanishoddata}is featured as one of the alternative ways to access open human mobility data on the official website of the Ministry of Transport and Sustainable Mobility of Spain.
mapineqr
The goal of {mapineqr} R package is to access the inequality indicators from the Mapineq.org API and dashboard (product of the Mapineq proejct).
Package homepage: ekotov.pro/mapineqr/
GitHub repo: github.com/e-kotov/mapineqr
mapineqpy
The goal of mapineqpy Python module is to access the inequality indicators from the Mapineq.org API and dashboard (product of the Mapineq proejct).
- Python Module GitHub repo: github.com/e-kotov/mapineqpy
wikimapR
wikimapR, an R package for importing Wikimapia data as Simple Features via API
Package homepage: ekotov.pro/wikimapR/
GitHub repo: github.com/e-kotov/wikimapR
wikimapR is an R package for accessing the raw vector data from Wikimapia via official Wikimapia API. Map data is returned as Simple Features (sf) objects with some of the object details included as nested lists.
Maintainer
flowmapblue 
This is a Flowmap.blue widget for R developed by Ilya Boyandin. It produces an interactive flow map representing numbers of movements between locations (origin-destination data). I act as a maintainer of the package.
Package homepage: flowmapblue.github.io/flowmapblue.R/
GitHub repo: github.com/FlowmapBlue/flowmapblue.R
layer 
The goal of layer is to simplify the whole process of creating stacked tilted maps, that are often used in scientific publications to show different environmental layers for a geographical region. Tilting maps and layering them allows to easily draw visual correlations between these environmental layers. Originally developed by Marco Sciaini and Cédric Scherer.
Package homepage: marcosci.github.io/layer/
GitHub repo: github.com/marcosci/layer
Significant Contributor
cartogram
cartogram - Construct a continuous area cartogram by a rubber sheet distortion algorithm (Dougenik et al. 1985), non-contiguous Area Cartograms (Olson 1976), and non-overlapping Circles Cartogram (Dorling el al. 1996) in R.
Implemented parallel processing of cartograms to speed up computation for large datasets.
Added progress bar to provide visual feedback and estimated processing time.
rang 
rang (Re)constructing R computational environments
Major feature addition - support for Apptainer/Singularity images.
Minor package improvements.
gridsample
gridsample Grid-based alternative to doing DHS-style survey sample design. An open source R package developed as a WorldPop project.
Refactoring the package to drop dependencies on the deprecated
rgdal,rgeos, andmaptoolspackages, making it eligible for restoration to CRAN.Fixing errors preventing package functioning as intended.
See all contributions to gridsample
- Related publication: Kotov, E., & Deneke, E. (2024). Expanding the Lifespan of Software for Demographic Analysis with Containers: An Application of Spatial Sampling. The Denominator. Population Dynamics Lab.
Minor Contributor
esri2sf
esri2sf R package for scraping features from ArcGIS Server REST API and create simple features dataframe.
- Bug fixes.
MicroDatosEs
MicroDatosEs R package providing utilities for reading and processing microdata from Spanish official statistics.
- Bug fixes, see pull requests.
geofacet
geofacet R package for geographical faceting with ggplot2.
- Bug fixes.
layer
layer Create stacked tilted maps in R
- Bug fixes, see pull requests.
OpenTripPlanner
OpenTripPlanner R package to set up and use OpenTripPlanner (OTP) as a local or remote multimodal trip planner.
- Fixed/added a minor feature.
PlaceSyntaxTool
PlaceSyntaxTool plugin for QGIS. PST is a tool for performing space syntax and regular accessibility analyses. It currently consists of two main parts - a C++ and Python library called Pstalgo and a plugin for the desktop application QGIS.
- Bug fixes, see pull requests.
Various pet projects
rewe-ebon-parser python module
rewe-ebon-parser - a python module to parse REWE eBons (digital receipts) from PDF files and convert them into structured JSON format or CSV