Merapikan data

Mari lanjutkan pekerjaan dari latihan sebelumnya. Setelah kita mendapatkan populasi yang diinginkan, sekarang mari memformat ulang data agar siap untuk dipetakan. Grafik hanya melihat pendapat penumpang pesawat tentang apakah berbagai perilaku itu tidak sopan, jadi pertama-tama kita akan memilih hanya kolom-kolom tersebut. Lalu kita dapat mengubah bentuk data untuk mempersiapkan pelajaran berikutnya, di mana kita akan mendapatkan data ringkasan dari berbagai pertanyaan.

Latihan ini adalah bagian dari kursus

Data Kategorikal di Tidyverse

Petunjuk latihan

Pilih kolom yang nama kolomnya memuat "rude".
Ubah himpunan data dari bentuk "wide" menjadi "long", dengan nama variabel di kolom bernama "response_var" dan nilainya di kolom bernama "value."

Latihan interaktif praktis

Cobalah latihan ini dengan menyelesaikan kode contoh berikut.

gathered_data <- flying_etiquette %>%
    mutate(across(where(is.character), as.factor)) %>%
    filter(`How often do you travel by plane?` != "Never") %>%
    # Select columns containing "rude"
    ___ %>%
    # Change format from wide to long
    ___

Edit dan Jalankan Kode

Latihan ini adalah bagian dari kursus

Data Kategorikal di Tidyverse

SkillTag.level.beginnerSkillTag.label

4.8+

Mulai Kursus Gratis

In this chapter, you’ll learn all about factors. You’ll discover the difference between categorical and ordinal variables, how R represents them, and how to inspect them to find the number and names of the levels. Finally, you’ll find how forcats, a tidyverse package, can improve your plots by letting you quickly reorder variables by their frequency.

Exercise 1: Introduction to qualitative variables Exercise 2: Recognizing factor variables Exercise 3: Qualitative variables in theory Exercise 4: Understanding your qualitative variables Exercise 5: Getting number of levels Exercise 6: Examining number of levels Exercise 7: Examining levels Exercise 8: Making better plots Exercise 9: Reordering a variable by its frequency Exercise 10: Ordering one variable by another

You’ll continue to dive into the forcats package, learning how to change the order and names of levels and even collapse them into one another.

Exercise 1: Reordering factors Exercise 2: Changing the order of factor levels Exercise 3: Tricks of fct_relevel()Exercise 4: Renaming factor levels Exercise 5: Distinguishing between forcats functions Exercise 6: Renaming a few levels Exercise 7: When you have a typo Exercise 8: Collapsing factor levels Exercise 9: Manually collapsing levels Exercise 10: Lumping variables by proportion Exercise 11: Preserving the most common levels

Having gotten a good grasp of forcats, you’ll expand out to the rest of the tidyverse, learning and reviewing functions from dplyr, tidyr, and stringr. You’ll refine graphs with ggplot2 by changing axes to percentage scales, editing the layout of the text, and more.

Exercise 1: Examining common themed variables Exercise 2: Grouping and reshaping similar columns Exercise 3: Summarizing data Exercise 4: Creating an initial plot Exercise 5: Tricks of ggplot2 Exercise 6: Editing plot text Exercise 7: Reordering graphs Exercise 8: Changing and creating variables with case_when()Exercise 9: case_when() with single variable Exercise 10: case_when() from multiple columns

In this final chapter, you’ll take all that you’ve learned and apply it in a case study. You’ll learn more about working with strings and summarizing data, then replicate a publication quality 538 plot.

Exercise 1: Pengantar studi kasus Exercise 2: Mengubah karakter menjadi faktor Exercise 3: Merapikan data

Latihan Saat Ini

Exercise 4: Persiapan data dan regex Exercise 5: Membersihkan string Exercise 6: Dikotomisasi variabel Exercise 7: Meringkas data Exercise 8: Membuat ulang plot Exercise 9: Membuat plot awal Exercise 10: Memperbaiki label Exercise 11: Membalik tampilan Exercise 12: Menyelesaikan bagan Exercise 13: Ringkasan akhir kursus