Teme de la zero

Introducere în vizualizarea datelor cu ggplot2

Rick Scavetta

Founder, Scavetta Academy

Stratul de teme

Toate elementele non-date
Elemente vizuale care nu fac parte din date

Stratul de teme

Toate elementele non-date
Elemente vizuale care nu fac parte din date

Trei tipuri

tip
text
linie
dreptunghi

Stratul de teme

Toate elementele non-date
Elemente vizuale care nu fac parte din date

Trei tipuri

tip	modificat cu
text	element_text()
linie	element_line()
dreptunghi	element_rect()

Un grafic de pornire...

ggplot(iris, aes(x = Sepal.Length, y = Sepal.Width, color = Species)) + 
  geom_jitter(alpha = 0.6)

Elementele de tip text


text
  axis.title 
    axis.title.x
      axis.title.x.top
      axis.title.x.bottom 
    axis.title.y
      axis.title.y.left
      axis.title.y.right 
  title 
    legend.title 
    plot.title
    plot.subtitle 
    plot.caption 
    plot.tag
  axis.text 
    axis.text.x 
      axis.text.x.top
      axis.text.x.bottom 
    axis.text.y
      axis.text.y.left
      axis.text.y.right
  legend.text
  strip.text
    strip.text.x
    strip.text.y

Elementele de tip text

theme(
text, 
  axis.title, 
    axis.title.x,
      axis.title.x.top, 
      axis.title.x.bottom, 
    axis.title.y, 
      axis.title.y.left,
      axis.title.y.right, 
  title, 
    legend.title, 
    plot.title,
    plot.subtitle, 
    plot.caption, 
    plot.tag, 
  axis.text, 
    axis.text.x, 
      axis.text.x.top,
      axis.text.x.bottom, 
    axis.text.y, 
      axis.text.y.left, 
      axis.text.y.right,
  legend.text,
  strip.text, 
    strip.text.x, 
    strip.text.y)

Ajustarea elementelor temei

ggplot(iris, aes(x = Sepal.Length, y = Sepal.Width, color = Species)) + 
  geom_jitter(alpha = 0.6) +
  theme(axis.title = element_text(color = "blue"))

Un grafic de pornire...

ggplot(iris, aes(x = Sepal.Length, y = Sepal.Width, color = Species)) + 
  geom_jitter(alpha = 0.6)

Elementele de tip linie

theme(
line,
  axis.ticks,
    axis.ticks.x, 
      axis.ticks.x.top,
      axis.ticks.x.bottom,
    axis.ticks.y,
      axis.ticks.y.left, 
      axis.ticks.y.right,
    axis.line,
      axis.line.x, 
        axis.line.x.top,
        axis.line.x.bottom, 
      axis.line.y,
        axis.line.y.left, 
        axis.line.y.right, 
  panel.grid,
    panel.grid.major, 
      panel.grid.major.x, 
      panel.grid.major.y, 
    panel.grid.minor,
      panel.grid.minor.x,
      panel.grid.minor.y)

Un grafic de pornire...

ggplot(iris, aes(x = Sepal.Length, y = Sepal.Width, color = Species)) + 
  geom_jitter(alpha = 0.6)

Elementele de tip dreptunghi

theme(
rect,
  legend.background, 
  legend.key,
  legend.box.background, 
  panel.background,
  panel.border,
  plot.background, 
  strip.background, 
    strip.background.x, 
    strip.background.y)

Denumirea ierarhică reflectă regulile de moștenire

ex. Text

text
  axis.title 
    axis.title.x
      axis.title.x.top
      axis.title.x.bottom 
    axis.title.y
      axis.title.y.left
      axis.title.y.right

ex. Linii

line
  axis.ticks
    axis.ticks.x 
      axis.ticks.x.top
      axis.ticks.x.bottom
    axis.ticks.y
      axis.ticks.y.left,
      axis.ticks.y.right
    axis.line
      axis.line.x 
        axis.line.x.top
        axis.line.x.bottom
      axis.line.y
        axis.line.y.left 
        axis.line.y.right

element_blank()

ggplot(iris, aes(x = Sepal.Length, y = Sepal.Width, color = Species)) + 
  geom_jitter(alpha = 0.6) + 
  theme(line = element_blank(),
        rect = element_blank(),
        text = element_blank())

Să exersăm!

Introducere în vizualizarea datelor cu ggplot2