st_as_sf(coords = c("lon", "lat"), crs = sf::st_crs(4326)) # Get original bounding box bbox <- st_bbox(points_sf) %>% st_as_sfc() %>% st_set_crs(st_crs(points_sf)) st_covers(bbox, points_sf) # Looks fine # Expand the bounding box by factor 1 bbox2 <- st_b...
它再次使用sf::st_as_sf，但这次指向geo_col作为包含几何图形的列，并在导入时将crs设置为4326。
# Plotting after setting CRSnew_df<-test_df%>%mutate(geometry=geo_col)%>%sf::st_as_sf()%>%sf::st_set_crs(value=4326)ggplot(new_df)+geom_sf()+theme_void()Errorinst_transform.sfc(X[[i]],...):cannot transform sfc object withmissingcrs But it does have a ...
> st_crs('LOCAL_CS["Undefined Cartesian SRS"]') Coordinate Reference System: User input: LOCAL_CS["Undefined Cartesian SRS"] wkt: ENGCRS["Undefined Cartesian SRS", EDATUM[""], CS[Cartesian,2], AXIS["(E)",east, ORDER[1], LENGTHUNIT["metre",1, ID["EPSG",9001]]], AXIS["(N)"...
它使用默认单位(米)返回,因为我们在st_as_sf()中设置了crs参数。 如果想要将单位转换为英里,可以使用units::set_units() 代码语言:javascript 代码运行次数:0 复制Cloud Studio 代码运行 st_distance(my_sf) %>% units::set_units(mi) Units: mi [,1] [,2] [1,] 0.00000 72.53493 [2,] 72.53493 0.0...
(crs=4326), ) %>% st_as_sf(crs=4326) %>% filter(!bearing_accurate== 0 %>% units::set_units(degrees)) ## Could also just use the actual storm path ## I decided I prefer this storm_paths <- storm_tracks3 %>% group_by(storm_id) %>% arrange(date_time) %>% summarise( ...
过程中也用了很多方法，比如戴明环，比如事情安排的“行人准则”，效果也是非常不错，交代的事情基本也能...
points <-read.csv("dat.csv") # please see attached dat.xlsx polys<- points %>% st_as_sf(coords = c("Longitude", "Latitude"), crs = 4326) %>% group_by(SitePondGpsRep) %>% summarise(geometry = st_combine(geometry)) %>% st_cast("POLYGON") polys<-tidyr::separate(polys,SitePo...
Describe the bug When using st_union on two "upwards" facing polygons (i.e. in CCW order), the resulting polygon is changed so that it faces downwards (CW). From section 6.1.11.1 of version 1.2.1 for the SF specification from https://www...
问org.postgresql.util.PSQLException:错误:函数st_dwithin(几何、双精度、双精度)不存在EN我想让所有的...