The foundational structure for any spatial object in sp is the Spatial class. About 350 of the spatial analysis packages use the spatial data types that are implemented in sp i.e. they “depend” on the sp package and many more are indirectly dependent. The package (first release on CRAN in 2005) provides classes and methods to create points, lines, polygons, and grids and to operate on them. Development of the sp package began in the early 2000s in an attempt to standardize how spatial data would be treated in R and to allow for better interoperability between different analysis packages that use spatial data. The first general package to provide classes and methods for spatial data types that was developed for R is called sp 1. 3.1 Plotting simple features ( sf) with plot.2.4 Spatial Aggregation: Points in Polygons.2.2 Topological Subsetting: Select Polygons by Location.1.2 Creating a spatial object from a lat/lon table.1.1 Conceptualizing spatial vector objects in R.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |