                 Changes in version 2.2-4 (2026-10-11)                  

    o   prevent protect call stack overflow; #160

                 Changes in version 2.2-0 (2025-02-01)                  

    o   remove exporting C symbols previously used by rgdal and rgeos

                        Changes in version 2.1-5                        

    o   add pkgdown site

    o   update sp map gallery and move to vignettes

                 Changes in version 2.1-4 (2024-04-30)                  

    o   if CRS is NA, do not require (and depend on) presence of
	package sf; #144

                 Changes in version 2.1-3 (2024-01-30)                  

    o   remove use of deprecated is.R()

                        Changes in version 2.0-1                        

    o   remove startup message

                 Changes in version 2.0-0 (2023-06-22)                  

    o   get_evolution_status() defaults to 2, meaning sp will no longer
	call rgdal or rgeos; spTransform will work using
	sf::st_transform.

    o   increase R version required from 3.0.0 to 3.2.0, which was de
	facto already required (PR from Sebastian Meyer)

                 Changes in version 1.6-1 (2023-05-31)                  

    o   add evolution vignette, drop over vignette, add startup message

                 Changes in version 1.6-0 (2023-01-19)                  

    o   add get_evolution_status() and set_evolution_status()

                 Changes in version 1.5-0 (2022-06-05)                  

    o   merge the evolution branch from rsbivand/sp@evolution

                 Changes in version 1.4-7 (2022-04-20)                  

    o   remove S-compatibility DOUBLE_* macros;
	https://github.com/edzer/sp/pull/115

                 Changes in version 1.4-6 (2021-11-14)                  

    o   add CRS cache and update CRS print method;
	https://github.com/edzer/sp/pull/103

                 Changes in version 1.4-2 (2020-05-20)                  

    o   Adding a wkt() method and muting internal warnings;
	https://github.com/edzer/sp/pull/76

                 Changes in version 1.4-1 (2020-02-28)                  

    o   warn on NULL projargs in CRS();
	https://github.com/edzer/sp/pull/74

                 Changes in version 1.4-0 (2020-02-21)                  

    o   prepare for new (>= 1.5.1) rgdal, which creates and listens to
	a comments() field of a CRS object carrying a WKT
	representation of a CRS rather than the proj4string; @rsb,
	https://github.com/edzer/sp/pull/67 and
	https://github.com/edzer/sp/pull/69 ; for more info see e.g.
	https://github.com/edzer/sp/issues/68 and
	https://github.com/r-spatial/discuss/issues/28

                 Changes in version 1.3-2 (2019-11-07)                  

    o   fix length > 1 in coercion to logical error; #54, #60

    o   add is.na method for CRS objects

                 Changes in version 1.2-5 (2017-06-29)                  

    o   address error in spplot, leading to display of "Error using
	packet 1: mixture of missing and non missing values for cex"

    o   address warning from Tomas Kalibera's static code checking

                 Changes in version 1.2-4 (2016-12-22)                  

    o   fix bug in duplicating objects in C; see
	<https://github.com/edzer/sp/commit/8f8a66090e47cf0f6bbf5549376c0bc07b6c29df>

    o   fix all long/lat-based great circle distance functions; see
	<https://github.com/edzer/sp/commit/d8374ff7efc6735cba9a054748c602bed0672f23>
	and
	<https://stat.ethz.ch/pipermail/r-sig-geo/2016-December/025201.html>

    o   clarified cellcentre.offset documentation, see
	<https://github.com/edzer/sp/issues/18>

                 Changes in version 1.2-3 (2016-04-14)                  

    o   update sp gallery, see <https://edzer.github.io/sp/>

    o   move methods from Imports: to Depends:

    o   improve base plot methods for SpatialGridDataFrame and
	SpatialPixelsDataFrame objects, see
	<https://r-spatial.org/r/2016/03/08/plotting-spatial-grids.html>
	for examples

    o   improve the graticule labels methods, see ?gridlines

    o   fix hole assignment for triangles, reported in
	<https://stat.ethz.ch/pipermail/r-sig-geo/2016-March/024214.html>

    o   as.SpatialPolygons.GridTopology drops rownames of coordinates
	generated, but keeps coordinate (column) names from the
	cellcentre.offset slot of the grid

    o   improve examples in over vignette.

                 Changes in version 1.2-2 (2016-02-05)                  

    o   method `row.names` for `SpatialPoints` makes unique row names,
	or drops them.

    o   add a labels method for gridlines, drawing labels under varying
	angle (see gridlines example)

    o   add coercion (``as'' methods) from deldir to SpatialLines and
	SpatialPolygons

    o   migrate sp code base to github

    o   correct [ subsetting when i is all FALSE; report by Francois
	Rousseau.

    o   add geometry<- method for Spatial, wrapping addAttrToGeom

    o   addressing rbind and docs issues raised by Kent Johnson on
	r-sig-geo, 5 Dec 2015

    o   get `row.names` of coords correctly if object is a
	SpatialPoints

    o   add non-default coercion SpatialPolygonsDataFrame to
	SpatialPolygons

    o   add comment to SpatialPolygons coerced from SpatialGrid or
	SpatialPixels

    o   coordinates method for SpatiaLines now retains rownames

                 Changes in version 1.2-1 (2015-10-18)                  

    o   spsample.Spatial does no longer generate objects with rownames.

    o   CRS gains argument doCheckCRSArgs, to allow suppression of the
	default checking

    o   coercion from Lines to SpatialPoints now drops (duplicate)
	rownames

    o   add coercion from SpatialLines* to SpatialMultiPoints*

    o   improve printing of SpatialMultiPoint* objects

    o   aggregate now passes minDimension to rgeos; explanation of
	aggregate extended in its vignette

    o   depend on rgeos version 0.3-13

    o   merge now accepts "row.names" or 0 for arguments by.x or by.y,
	for compatibility with base::merge.

    o   aggregate now accepts parameter minDimension, introduced for
	over in 1.2-0, and passes it on to over to control when
	features intersect; see the documentation of over and its
	vignette for details.

    o   SpatialMultiPoints objects with zero features can now exist.

                 Changes in version 1.2-0 (2015-09-08)                  

    o   Support for SpatialMultiPoints and SpatialMultiPointsDataFrame
	objects. Where SpatialPoints are set of points,
	SpatialMultiPoints are sets of point sets.
	SpatialPointsDataFrame objects bind points to attribute values,
	SpatialMultiPointsDataFrame bind point sets to attribute
	values.  Methods supported are subsetting ([), plot, spplot,
	over, and coercion to SpatialPoints or SpatialPointsDataFrame.
	Functions in rgeos support this feature class. See also
	demo(mp).

    o   creating SpatialPoints objects with duplicated coordinate
	rownames now gives a warning, which will become an error in the
	future.

    o   Support for Google Earth or OpenStreetMap background maps in
	sp::plot and spplot. Maps returned by
	
	  • function GetMap in package RgoogleMaps
	
	  • function get_map in package ggmap
	
	are now understood by plotting functions in sp. In particular,
	sp::plot now has an argument bgMap, spplot now has panel
	functions panel.RgoogleMaps and panel.ggmap; See demo(webmap)
	for examples.
	
	As these maps assume a web mercator projection, sp::plot issues
	a warning if the object to be plotted have a CRS that does not
	contain "+init=epsg:3857"

    o   over methods that are taken care of by rgeos (anything
	involving SpatialLines, or SpatialPolygons-SpatialPolygons)
	gained an argument minDimension, which causes an ordering of
	returned features by dimension of intersection, and the ability
	to select a minimun dimension (e.g. only area-overlap); this
	uses gRelate, and has a computational cost. Documentation found
	in vignette("over").
