frame.segments {cholera} | R Documentation |
Dodson and Tobler's "Map Frame" street data transformed into road segments.
Description
This data set transforms Dodson and Tobler's street data to give each straight line segment of a "road" a unique ID.
Usage
frame.segments
Format
A data frame with 658 observations and 7 variables. The data describe the straight line segments used to recreate the roads on Snow's map.
street
numeric street ID
id
character segment ID
name
road name
x1
x-coordinate of first endpoint
y1
y-coordinate of first endpoint
x2
x-coordinate of second endpoint
y2
y-coordinate of second endpoint
lon1
longitude of first endpoint
lat1
latitude of first endpoint
lon2
longitude of second endpoint
lat2
latitude of second endpoint
Note
'frameSegments()' documents the code for these data.
[Package cholera version 0.9.1 Index]