Week_11_12_Lecture_Notes: Handling Spatial Data, Spatial Data Visualization, Web Mapping Spatial Data

There are three .Rmd/html files to follow:

intro_spatial_data.Rmd/intro_spatial_data.html,
spatial_data_visualization.Rmd/spatial_data_visualization.html, and
web_mapping_with_leaflet.Rmd/web_mapping_with_leaflet.html.