Suppose t
is:
t <- structure(list(structure(list(structure(c(-89.990791, -89.990772,
-89.990901, -89.99092, -89.990791, 30.727025, 30.727083, 30.727114,
30.727057, 30.727025), .Dim = c(5L, 2L))), class = c("XY", "POLYGON",
"sfg")), structure(list(structure(c(-89.991691, -89.991755, -89.991755,
-89.991691, -89.991691, 30.716004, 30.716004, 30.715916, 30.715916,
30.716004), .Dim = c(5L, 2L))), class = c("XY", "POLYGON", "sfg"
))), class = c("sfc_POLYGON", "sfc"), precision = 0, bbox = structure(c(xmin = -89.991755,
ymin = 30.715916, xmax = -89.990772, ymax = 30.727114), class = "bbox"), crs = structure(list(
epsg = 4326L, proj4string = "+proj=longlat +datum=WGS84 +no_defs"), class = "crs"), n_empty = 0L)
> t
Geometry set for 2 features
geometry type: POLYGON
dimension: XY
bbox: xmin: -89.99176 ymin: 30.71592 xmax: -89.99077 ymax: 30.72711
epsg (SRID): 4326
proj4string: +proj=longlat +datum=WGS84 +no_defs
POLYGON ((-89.99079 30.72703, -89.99077 30.7270...
POLYGON ((-89.99169 30.716, -89.99175 30.716, -...
How can I filter polygons by long/lat boundaries? Suppose I want to filter out any polygon that hax lat>30.72 (so to keep only the second polygon). Is there any specific function I can use to filter polygons?
Best Answer
Here is one solution using
dplyr
: