R: computes bounding box

qbbox {RgoogleMaps} | R Documentation

## 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

### 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]));

[Package RgoogleMaps version 1.4.1 Index]