Kursus
Manipulasi Data dengan data.table di R
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Diperbarui 08/2024Mulai Kursus Gratis
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RData Manipulation4 jam15 videos59 Latihan5,050 XP26,130Bukti Prestasi
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Persyaratan
Intermediate R1
Introduction to data.table
This chapter introduces data.tables as a drop-in replacement for data.frames and shows how to use data.table's i argument to filter rows.
2
Selecting and Computing on Columns
Just as the i argument lets you filter rows, the j argument of data.table lets you select columns and also perform computations. The syntax is far more convenient and flexible when compared to data.frames.
3
Groupwise Operations
This chapter introduces data.table's by argument that lets you perform computations by groups. By the end of this chapter, you will master the concise DT[i, j, by] syntax of data.table.
4
Reference Semantics
You will learn about a unique feature of data.table in this chapter: modifying existing data.tables in place. Modifying data.tables in place makes your operations incredibly fast and is easy to learn.
5
Importing and Exporting Data
Not only does the data.table package help you perform incredibly fast computations, it can also help you read and write data to disk with amazing speeds. This chapter focuses on data.table's fread() and fwrite() functions which let you import and export flat files quickly and easily!
Manipulasi Data dengan data.table di R
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Buat Akun Gratis Anda
atau
Dengan melanjutkan, Anda menerima Ketentuan Penggunaan kami, Kebijakan Privasi kami dan bahwa data Anda disimpan di Amerika Serikat.