thicken_cust | R Documentation |
Like thicken
, it will find the datetime variable in x
and add a variable of a higher periodicity to it. However, the variable to
which to map the observation is provided by the user. This enables mapping to
time points that are unequally spaced.
thicken_cust(x, spanned, colname, by = NULL, drop = FALSE)
x |
A data frame containing at least one datetime variable of
class |
spanned |
A datetime vector to which the the datetime variable in
|
colname |
Character, the column name of the added variable. |
by |
Only needs to be specified when |
drop |
Should the original datetime variable be dropped from the
returned data frame? Defaults to |
Only rounding down is available for custom thickening.
The data frame x
with the variable added to it.
library(dplyr) # analysis of traffic accidents in traffic jam hours and other hours. accidents <- emergency %>% filter(title == "Traffic: VEHICLE ACCIDENT -") spanning <- span_time("20151210 16", "20161017 17", tz = "EST") %>% subset_span(list(hour = c(6, 9, 16, 19))) thicken_cust(accidents, spanning, "period") %>% count(period) %>% pad_cust(spanning)
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