## Make Interactive Maps with Leaflet R - GIS in R

In this lesson you learn the steps to create a map in R using ggplot.

*last updated: 30 Jul 2018*

In this lesson you learn the steps to create a map in R using ggplot.

*last updated: 30 Jul 2018*

You can use R as a GIS. Learn how to create a map in R using ggplot in this R maps tutorial.

*last updated: 10 Jan 2018*

In this lesson you break down the steps required to create a custom legend for spatial data in R. You learn about creating unique symbols per category, customizing colors and placing your legend outside of the plot using the xpd argument combined with x,y placement and margin settings.

*last updated: 10 Jan 2018*

In this lesson you learn how to reproject a vector dataset using the spTransform() function in R.

*last updated: 10 Jan 2018*

This lesson discusses ways that coordinate reference system data are stored including proj4, well known text (wkt) and EPSG codes.

*last updated: 10 Jan 2018*

Geographic coordinate reference systems are often used to make maps of the world. Projected coordinate reference systems are use to optimize spatial analysis for a region. Learn about WGS84 and UTM Coordinate Reference Systems as used in R.

*last updated: 30 Jul 2018*

Coordinate reference systems are used to convert locations on the earth which is round, to a two dimensional (flat) map. Learn about the differences between coordinate reference systems.

*last updated: 30 Jul 2018*

This lesson reviews the core files that are required to use a shapefile including: shp, shx and dbf. It also covers the .prj format which is used to define the coordinate reference system (CRS) of the data.

*last updated: 30 Jul 2018*

This lesson introduces what vector data are and how to open vector data stored in shapefile format in R.

*last updated: 30 Jul 2018*