Facetters plottningsutrymmen

Datavisualisering med ggplot2 – fortsättningskurs

Rick Scavetta

Founder, Scavetta Academy

Facetter och plottningsutrymmen

Skäl att inte använda enhetliga plottningsutrymmen:

Variabeltyp	Delmängder innehåller
Kontinuerlig	Vitt skilda intervall
Kategorisk	Olika grupper

Justera plottningsutrymmet...

ggplot(msleep2, aes(bodywt_log,
                    brainwt_log)) +
  geom_point(alpha = 0.6, shape = 16) +
  coord_fixed() +
  facet_grid(rows = vars(vore), 
             cols = vars(conservation))

... men inte med fasta skalor

ggplot(msleep2, aes(bodywt_log,
                         brainwt_log)) +
  geom_point(alpha = 0.6, shape = 16) +
  coord_fixed() +
  facet_grid(rows = vars(vore), 
             cols = vars(conservation),
             scales = "free_x")

Error: coord_fixed doesn't support free scales

Justera plottningsutrymmet

ggplot(msleep2, aes(bodywt_log, 
                    brainwt_log)) +
  geom_point(alpha = 0.6, shape = 16) +
  facet_grid(rows = vars(vore), 
             cols = vars(conservation),
             scales = "free_x")

Justera plottningsutrymmet

ggplot(msleep2, aes(bodywt_log, 
                    brainwt_log)) +
  geom_point(alpha = 0.6, shape = 16) +
  facet_grid(rows = vars(vore), 
             cols = vars(conservation),
             scales = "free_y")

Justera plottningsutrymmet

ggplot(msleep2, aes(bodywt_log, 
                    brainwt_log)) +
  geom_point(alpha = 0.6, shape = 16) +
  facet_grid(rows = vars(vore), 
             cols = vars(conservation),
             scales = "free")

Justera plottningsutrymmet

ggplot(msleep2, aes(x = bodywt_log, 
                    y = name)) +
  geom_point() +
  facet_grid(rows = vars(vore))

Justera plottningsutrymmet

ggplot(msleep2, aes(x = bodywt_log, 
                    y = name)) +
  geom_point() +
  # Free the y scales and space
  facet_grid(rows = vars(vore), 
             scales = "free_y")

Justera plottningsutrymmet

ggplot(msleep2, aes(x = bodywt_log, 
                    y = name)) +
  geom_point() +
  # Free the y scales and space
  facet_grid(rows = vars(vore),
             scales = "free_y", 
             space = "free_y")

Sista justeringarna

msleep2 <- msleep2 %>% 
  # Arrange from lo to hi weight
  arrange(-bodywt_log) %>% 
  # Redefine factor levels in order
  mutate(name = as_factor(name)) 

# New order is reflected in y axis
ggplot(msleep2, aes(x = bodywt_log,
                    y = name)) +
  geom_point() +
  # Free the y scales and space
  facet_grid(rows = vars(vore),
             scales = "free_y", 
             space = "free_y")

Nu kör vi en övning!

Datavisualisering med ggplot2 – fortsättningskurs