RgoogleMaps (version 1.2.0.2)

qbbox: computes bounding box

Description

The function qbbox computes a bounding box for the given lat,lon points with a few additional options such as quantile boxes, additional margins, etc.

Usage

qbbox(lat,
lon,
TYPE = c("all",
"quantile")[1],
margin = list(m = c(1,
1,
1,
1),
TYPE = c("perc",
"abs")[1]),
q.lat = c(0.1,
0.9),
q.lon = c(0.1,
0.9),
verbose = 0)

Arguments

lat

latitude values

lon

longitude values

TYPE

margin

q.lat

q.lon

verbose

Value

• latR
  latitude range
• lonR
  longitude range

Examples

lat = 37.85 + rnorm(100, sd=0.001);
lon = -120.47 + rnorm(100, sd=0.001);
#add a few outliers:
lat[1:5] <- lat[1:5] + rnorm(5, sd =.01);
lon[1:5] <- lon[1:5] + rnorm(5, sd =.01);

#range, discarding the upper and lower 10\% of the data
qbbox(lat, lon, TYPE = "quantile");
#full range:
qbbox(lat, lon, TYPE = "all");
#add a 10\% extra margin on all four sides:
qbbox(lat, lon, margin = list(m = c(10, 10, 10, 10), TYPE = c("perc", "abs")[1]));