CODEWITHSUNDEEP
rggplot2data-visualization
Jesse Cambon
Jesse Cambon

Reputation: 355

ggplot stacked bar - hide labels but preserve label positioning

I have a stacked bar chart in ggplot with geom_text() labels centered on each bar. I want to hide labels on small bars so that the graph does not look overly crowded. I can do this with the code below, but it messes up the positioning of the labels as you can see in the linked picture below (they are no longer centered).

Is there a way to hide bar chart labels that doesn't mess up the positions of the remaining labels?

ggplot(data=outcome,
      aes(x = category, y=percent,fill = outcome)) +
geom_bar(stat='identity') +
coord_flip() +
geom_text(data=outcome %>% filter(percent>=0.1),aes(label = percent), size = 3,position = position_stack(vjust = 0.5),
          check_overlap=TRUE)

stacked bar chart with mispositioned labels

Upvotes: 2

Views: 2104

Answers (1)

aosmith
aosmith

Reputation: 36076

You can use an ifelse() statement. Here I put blanks every time I didn't want a label, but NA also works.

library(ggplot2)

df = data.frame(
     x = factor(c(1, 1, 2, 2)),
     y = c(1, 3, 2, 1),
     grp = c("a", "b", "a", "b")
)

ggplot(data = df, aes(x, y, fill = grp)) +
     geom_col() +
     coord_flip() +
     geom_text(aes(label = ifelse(y > 1, y, "")), 
               position = position_stack(vjust = 0.5),
               size = 3)

Created on 2018-08-07 by the reprex package (v0.2.0).

Upvotes: 7

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