Pemetaan yang tepat

Pemetaan estetika yang tidak benar dapat menimbulkan kebingungan atau menyesatkan audiens.

Biasanya, variabel terikat dipetakan ke sumbu y dan variabel bebas dipetakan ke sumbu x.

Dalam himpunan data ToothGrowth, terdapat tiga variabel:

Variable	Description
`len`	Panjang gigi
`supp`	Jenis suplemen (VC atau OJ)
`dose`	Dosis dalam miligram/hari

Dari enam cara yang mungkin untuk memetakan tiga variabel, salah satu solusinya ditampilkan di penampil. Opsi mana di bawah ini yang menghasilkan plot tersebut?

Latihan ini adalah bagian dari kursus

Pengantar Visualisasi Data dengan ggplot2

Latihan interaktif praktis

Ubah teori menjadi tindakan dengan salah satu latihan interaktif kami.

Mulai berolahraga

Latihan ini adalah bagian dari kursus

Pengantar Visualisasi Data dengan ggplot2

SkillTag.level.beginnerSkillTag.label

4.8+

Mulai Kursus Gratis

In this chapter we’ll get you into the right frame of mind for developing meaningful visualizations with R. You’ll understand that as a communications tool, visualizations require you to think about your audience first. You’ll also be introduced to the basics of ggplot2 - the 7 different grammatical elements (layers) and aesthetic mappings.

Exercise 1: Introduction Exercise 2: Explore and explain Exercise 3: Drawing your first plot Exercise 4: Data columns types affect plot types Exercise 5: The grammar of graphics Exercise 6: Mapping data columns to aesthetics Exercise 7: Understanding variables Exercise 8: ggplot2 layers Exercise 9: Adding geometries Exercise 10: Changing one geom or every geom Exercise 11: Saving plots as variables

Aesthetic mappings are the cornerstone of the grammar of graphics plotting concept. This is where the magic happens - converting continuous and categorical data into visual scales that provide access to a large amount of information in a very short time. In this chapter you’ll understand how to choose the best aesthetic mappings for your data.

Exercise 1: Atribut estetika yang terlihat Exercise 2: Semua tentang estetika: warna, bentuk, dan ukuran Exercise 3: Semua tentang estetika: color vs. fill Exercise 4: Semua tentang estetika: membandingkan estetika Exercise 5: Estetika untuk variabel kategorikal & kontinu Exercise 6: Menggunakan atribut Exercise 7: Semua tentang atribut: color, shape, size, dan alpha Exercise 8: Semua tentang atribut: konflik dengan estetika Exercise 9: Maksimalkan seluruhnya Exercise 10: Memodifikasi estetika Exercise 11: Memperbarui label estetika Exercise 12: Menyetel estetika tiruan Exercise 13: Praktik terbaik untuk estetika Exercise 14: Pemetaan yang tepat

Latihan Saat Ini

A plot’s geometry dictates what visual elements will be used. In this chapter, we’ll familiarize you with the geometries used in the three most common plot types you’ll encounter - scatter plots, bar charts and line plots. We’ll look at a variety of different ways to construct these plots.

Exercise 1: Scatter plots Exercise 2: Overplotting 1: large datasets Exercise 3: Overplotting 2: Aligned values Exercise 4: Overplotting 3: Low-precision data Exercise 5: Overplotting 4: Integer data Exercise 6: Histograms Exercise 7: Drawing histograms Exercise 8: Positions in histograms Exercise 9: Bar plots Exercise 10: Position in bar and col plots Exercise 11: Overlapping bar plots Exercise 12: Bar plots: sequential color palette Exercise 13: Line plots Exercise 14: Basic line plots Exercise 15: Multiple time series

In this chapter, we’ll explore how understanding the structure of your data makes data visualization much easier. Plus, it’s time to make our plots pretty. This is the last step in the data viz process. The Themes layer will enable you to make publication quality plots directly in R. In the next course we'll look at some extra layers to add more variables to your plots.

Exercise 1: Themes from scratch Exercise 2: Moving the legend Exercise 3: Modifying theme elements Exercise 4: Modifying whitespace Exercise 5: Theme flexibility Exercise 6: Built-in themes Exercise 7: Exploring ggthemes Exercise 8: Setting themes Exercise 9: Publication-quality plots Exercise 10: Effective explanatory plots Exercise 11: Using geoms for explanatory plots Exercise 12: Using annotate() for embellishments