November 2017
Intermediate to advanced
502 pages
11h 21m
German
Content preview from R für Data ScienceBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.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.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
KAPITEL 13
Datum und Uhrzeit mit lubridate
Einführung
Dieses Kapitel zeigt Ihnen, wie Sie in R mit Datums-/Zeitwerten arbeiten. Auf den ersten Blick scheinen solche Daten ganz einfach zu sein. Man begegnet ihnen ständig im täglichen Leben, und sie stiften offenbar auch kaum Verwirrung. Je mehr Sie aber über Datums-/Zeitwerte lernen, desto komplizierter scheinen sie zu werden. Als Aufwärmübung sollten Sie die folgenden drei einfach erscheinenden Fragen beantworten:
- Hat jedes Jahr 365 Tage?
- Hat jeder Tag 24 Stunden?
- Hat jede Minute 60 Sekunden?
Zweifellos wissen Sie, dass nicht jedes Jahr 365 Tage hat, doch kennen Sie die vollständige Regel, wie bestimmt wird, ob ein Jahr ein Schaltjahr ist? (Sie besteht aus drei Teilen.) Sicherlich wissen Sie ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.