Edzer Pebesma^{1}

1. Institute for Geoinformatics, University of Muenster, Germany

**Keywords**: Spatial data, simple features, raster data, time series, tidyverse

Working with spatial data in R goes back to the early days of R itself. For many spatial statistics and spatial analysis methods, R provides reference implementations. Spatial classes and methods in packages sp and raster, together with interfaces to GEOS and GDAL in rgeos, rgdal along with a few hundred packages depending on those have formed the cornerstone for many analysts for a long time.

Recent developments in the areas of data standardisation, web-based visualisation and computing, spatial databases, scalability, as well as R developments such as pipe-based workflows and the tidyverse have stimulated to rethink the way we handle spatial data in R. This has for instance resulted in package sf, a package that has been developed with support from the R consortium.

This workshop will illuminate old and the new ways of handling spatial data in R, will put some focus on handling simple features, and will discuss challenges ahead.

After this workshop, participants should understand

- what simple features are, where they come from, and how they can be handled in R
- how spatial data can be imported and exported in R
- what spatial reference systems and coordinate transformations are
- what geometrical operations are
- how simple features can be used in pipe-based workflows
- what the current options and limitations are for handling time series, raster, and spatial time series data

A tentative overview of the tutorial content is:

- A short history of handling spatial data in R
- Simple feature access
- Tidyverse and list-columns
- Package sf
- Methods for simple features
- Coordinate reference systems, and where to put them
- Pipe-based workflows
- Array data: rasters and time series
- Spatial time series
- Outlook

It is assumed that participants are familiar with R, and have some notion of spatial data. It is not required that they have a working knowledge of all the terms mentioned in this workshop description.

Potential workshop attendees include data scientists and people working in a domain where they are faced with spatial data, e.g. ecologists, hydrologists, climate scientists, epidemiologists, social scientists, geographers, geoscientists, business intelligence analysts, and so on.

Edzer Pebesma is full professor at the institute for geoinformatics of the university of Muenster. He is one of the authors of the book Applied Spatial Data Analysis with R, second edition, and is author and maintainer of a handful of packages found on his github page.

The material for this tutorial will also be developed on github.