# One World > Personal portfolio and blog by dieghernan, covering R packages, spatial data, cartography and open-source software. The site contains tutorials, mapping experiments and project summaries. Articles describe the software and data available when they were written; consult the linked package documentation for current APIs and installation instructions. Project pages also cover historical work, including discontinued Pebble watch faces. ## Site overview - [About dieghernan](https://dieghernan.github.io/about): Author background, interests and public profiles. - [Projects](https://dieghernan.github.io/projects): Featured R packages and other open-source projects. - [Blog](https://dieghernan.github.io/blog/): Tutorials, package updates and mapping experiments. - [Archive](https://dieghernan.github.io/archive): Articles and projects ordered by date. ## Selected tutorials - [Introducing geobounds](https://dieghernan.github.io/202602_geobounds/): Access administrative boundaries from geoBoundaries in R. - [Introducing tidyterra](https://dieghernan.github.io/202205_tidyterra/): Tidyverse methods and ggplot2 tools for terra spatial data. - [Hillshade with tidyterra](https://dieghernan.github.io/202210_tidyterra-hillshade/): Build terrain visualizations using hillshade and color. - [Star map with R](https://dieghernan.github.io/202301_star-map-R/): Create a map of the night sky. - [Mapping Antarctica](https://dieghernan.github.io/202510_mapping-antarctica/): Work with Antarctic geometry and polar projections. ## Package documentation - [tidyterra](https://dieghernan.github.io/tidyterra/): Tidyverse methods and ggplot2 tools for terra. - [giscoR](https://ropengov.github.io/giscoR/): Access GISCO geographic data from Eurostat. - [mapSpain](https://ropenspain.github.io/mapSpain/): Access Spanish geographic boundaries and mapping data. - [geobounds](https://dieghernan.github.io/geobounds/): Access geoBoundaries administrative boundaries. - [cffr](https://docs.ropensci.org/cffr/): Create and maintain CITATION.cff files for software citation. - [resmush](https://dieghernan.github.io/resmush/): Optimize images from R using reSmush.it. ## Optional - [Gallery](https://dieghernan.github.io/gallery): Maps and plots from the author's work. - [Site source](https://github.com/dieghernan/dieghernan.github.io): Jekyll source, article Markdown and R Markdown files. - [Chulapa](https://dieghernan.github.io/chulapa/): Documentation for the Jekyll theme used by this site.