README.md

In mdsumner/gv: Read Simple Features (GDAL Core)

forked from sf 49504352e685702ee749a042e26476fc91b66014 2017-01-28

library(sf)
dsn <- system.file("shape/nc.shp", package="sf")
nc <- st_read(dsn)
#> Reading layer `nc' from data source `/perm_storage/home/mdsumner/R/x86_64-pc-linux-gnu-library/3.3/sf/shape/nc.shp' using driver `ESRI Shapefile'
#> converted into: MULTIPOLYGON
#> Simple feature collection with 100 features and 14 fields
#> geometry type:  MULTIPOLYGON
#> dimension:      XY
#> bbox:           xmin: -84.32385 ymin: 33.88199 xmax: -75.45698 ymax: 36.58965
#> epsg (SRID):    4267
#> proj4string:    +proj=longlat +datum=NAD27 +no_defs

wkt <- readLines(system.file("shape/nc.prj", package = "sf"))
#> Warning in readLines(system.file("shape/nc.prj", package = "sf")):
#> incomplete final line found on '/perm_storage/home/mdsumner/R/x86_64-pc-
#> linux-gnu-library/3.3/sf/shape/nc.prj'
sf:::CPL_crs_from_wkt(wkt)
#> $epsg
#> [1] 4267
#> 
#> $proj4string
#> [1] "+proj=longlat +ellps=clrk66 +no_defs"
#> 
#> attr(,"class")
#> [1] "crs"

mls <- "POINT (20 30)"
a <- sf::st_sfc(sf:::CPL_sfc_from_wkt(mls))

x <-  sf:::gv(dsn)

We need "agr.R", "sf.r" and "sp.R".

nc <- st_read(system.file("shape/nc.shp", package="sf"))
Reading layer `nc' from data source `/perm_storage/home/mdsumner/R/x86_64-pc-linux-gnu-library/3.3/sf/shape/nc.shp' using driver `ESRI Shapefile'
converted into: MULTIPOLYGON
Error in st_sf(x, ..., agr = agr) : object 'NA_agr_' not found

We need sp.R for st_as_sfc generic.

op st_intersects is a problem, so will have to hack the slice [

mdsumner/gv documentation built on May 22, 2019, 4:44 p.m.