Various methods for event objects
# S3 method for ev
nrow(x)# S4 method for ev
names(x)
# S3 method for ev
as.matrix(x, ...)
# S3 method for ev
as.data.frame(x, row.names = NULL, optional = FALSE,
add_ID = NULL, ...)
# S4 method for ev
show(object)
an events object
passed to various methods
passed to as.data.frame
passed to as.data.frame
numeric ID of length 1 used to add ID
column
only if one doesn't already exist
used for show