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LPCM (version 0.47-6)

calspeedflow: Speed-flow data from California.

Description

A `fundamental diagram' with observations of speed and flow recorded from 9th of July 2007, 9am, to 10th of July 2007, 10pm, on Line 5 of the Californian Freeway SR57-N, VDS number 1202263. The data were originally measured in intervals of thirty seconds, and then aggregated over intervals of 5 minutes length.

Usage

data(calspeedflow)

Arguments

Format

A data frame with 444 observations on the following 4 variables.

Date

a factor with levels 07/09/2007... 07/10/2007.

Timestamp

a factor with a timestamps in intervals of five minutes.

Lane5Flow

a numeric vector of vehicle flow in vehicles per 5 minutes.

Lane5Speed

a numeric vector of vehicle speed in miles per hour.

References

Einbeck, J., and Dwyer, J. (2011). Using principal curves to analyze traffic patterns on freeways. Transportmetrica 7, 229-246.

Examples

Run this code
data(calspeedflow)
plot(calspeedflow[,3:4])

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