qbbox: computes bounding box

In RgoogleMaps: Overlays on Static Maps

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

Author(s)

Markus Loecher

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]));


 

RgoogleMaps documentation built on May 2, 2019, 5:03 p.m.