Make WKT multipoint objects
Make WKT multipoint objects
multipoint(..., fmt = 16, third = "z")
... |
A GeoJSON-like object representing a Point, LineString, Polygon, MultiPolygon, etc. |
fmt |
Format string which indicates the number of digits to display after the decimal point when formatting coordinates. Max: 20 |
third |
(character) Only applicable when there are three dimensions.
If |
Other R-objects:
circularstring(),
geometrycollection(),
linestring(),
multilinestring(),
multipolygon(),
point(),
polygon()
## empty multipoint
multipoint("empty")
# multipoint("stuff")
# numeric
multipoint(c(100.000, 3.101), c(101.000, 2.100), c(3.140, 2.180))
# data.frame
df <- us_cities[1:25, c('long', 'lat')]
multipoint(df)
# matrix
mat <- matrix(c(df$long, df$lat), ncol = 2)
multipoint(mat)
# list
multipoint(list(c(100.000, 3.101), c(101.000, 2.100), c(3.140, 2.180)))
## a 3rd point is included
multipoint(c(100, 3, 0), c(101, 2, 0), c(3, 2, 0),
third = "z", fmt = 1)
multipoint(c(100, 3, 0), c(101, 2, 0), c(3, 2, 0),
third = "m", fmt = 1)
df <- us_cities[1:25, c('long', 'lat')]
df$altitude <- round(runif(25, 100, 500))
multipoint(df, fmt = 2)
multipoint(df, fmt = 2, third = "m")
mat <- matrix(1:9, 3)
multipoint(mat)
multipoint(mat, third = "m")
x <- list(c(100, 3, 0), c(101, 2, 1), c(3, 2, 5))
multipoint(x)
## a 4th point is included
multipoint(
c(100, 3, 0, 500), c(101, 2, 0, 505), c(3, 2, 0, 600),
fmt = 1)
df <- us_cities[1:25, c('long', 'lat')]
df$altitude <- round(runif(25, 100, 500))
df$weight <- round(runif(25, 1, 100))
multipoint(df, fmt = 2)
mat <- matrix(1:12, 3)
multipoint(mat)
x <- list(c(100, 3, 0, 300), c(101, 2, 1, 200), c(3, 2, 5, 100))
multipoint(x, fmt = 3)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.