March 2018
Intermediate to advanced
528 pages
13h 2m
Portuguese (Portugal, Brazil)
Content preview from R para Data Science
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Componentes de Data-Hora | 247
Calcular a diferença entre dados arredondados e não arredondados pode ser particu-
larmente útil.
Configurando Componentes
Você também pode usar cada função de acesso para configurar os componentes de
uma data/hora:
( datetime <- ymd_hms( "2016-07-08 12:34:56" ))
#> [1] "2016-07-08 12:34:56 UTC"
year
( datetime ) <- 2020
datetime
#> [1] "2020-07-08 12:34:56 UTC"
month
( datetime ) <- 01
datetime
#> [1] "2020-01-08 12:34:56 UTC"
hour( datetime )
<- hour
( datetime )
+ 1
Alternativamente, em vez de modificar no local, você pode criar uma nova data-hora
com update(). Isso também permite que você configure vários va
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.