add_window_l: Add smoothing window to a longitudinal network
In tnet: Weighted, Two-Mode, and Longitudinal Networks Analysis

Description Usage Arguments Value Note Author(s) References Examples

This function adds negative ties (i.e., a smoothing window) to a longitudinal network.

1	add_window_l(net,window=21, remove.nodes=TRUE)

`net`	Longitudinal network
`window`	Number of days before ties 'expire'.
`remove.nodes`	Whether or not nodes should be removed from the network if they have no more ties. This function adds a self-loop with a negative weight at the time of a node's last tie plus the length of the window.

Returns the longitudinal network with negative arcs.

version 1.0.0

Tore Opsahl; http://toreopsahl.com

tore@opsahl.co.uk

t <- c('2007-09-12 13:45:00', 
'2007-09-12 13:46:31',
'2007-09-12 13:47:54',
'2007-09-12 13:48:21',
'2007-09-12 13:49:27',
'2007-09-12 13:58:14',
'2007-09-12 13:52:17',
'2007-09-12 13:56:59');
i <- c(1,1,1,1,1,1,1,1);
j <- c(2,2,2,2,2,2,3,3);
w <- c(1,1,1,1,1,1,1,1);
sample <- data.frame(t, i, j, w);

## Run the programme
add_window_l(sample, window=21)