Remove extra space and ring at the edge of a polar plot

by

The extra space is generated by the outermost circle of a panel.grid. The grid is added by default in the theme you have used (and in most other ggplot themes; default settings here)

Thus, remove panel.grid in theme. You might then create an own grid, according to taste, using e.g. geom_hline and geom_vline. Here I used the breaks you had specified in scale_x and _y as intercepts. I picked line colour and size from default panel.grid.major in theme_bw.

ggplot(data = df) +
  geom_point(aes(x = bng, y = rng, color = det), size = 5, alpha = 0.7) +
  geom_hline(yintercept = seq(0, 15000, by = 3000), colour = "grey90", size = 0.2) +
  geom_vline(xintercept = seq(0, 360-1, by = 45), colour = "grey90", size = 0.2) +
  coord_polar(theta="x", start = 0, direction = 1) +
  labs(x = '', y = '') +
  scale_color_manual(name="",
                     values = c('red', 'black'),
                     breaks = c(FALSE, TRUE),
                     labels = c('Not Detected', 'Detected')) +
  scale_x_continuous(limits = c(0, 360), expand = c(0, 0), breaks = seq(0, 360-1, by = 45)) +
  scale_y_continuous(limits = c(0, 15000), breaks = seq(0, 15000, by = 3000)) +
  theme_bw() +
  theme(panel.border = element_blank(),
        legend.key = element_blank(),
        axis.ticks = element_blank(),
        axis.text.y = element_blank(),
        panel.grid  = element_blank())

enter image description here

More Related Contents:

  1. Several questions on ggplot2 [closed]
  2. Using ggplot2, can I insert a break in the axis?
  3. How to change legend title in ggplot
  4. Fixing the order of facets in ggplot
  5. Consistent width for geom_bar in the event of missing data
  6. Grouped bar plot in ggplot
  7. Putting mathematical symbols and subscripts mixed with regular letters [duplicate]
  8. Create discrete color bar with varying interval widths and no spacing between legend levels
  9. Overlaying histograms with ggplot2 in R
  10. Increase distance between text and title on the y-axis
  11. Align ggplot2 plots vertically
  12. Grouped barplot in R with error bars
  13. Plotting multiple time-series in ggplot
  14. R + ggplot2 => add labels on facet pie chart [duplicate]
  15. Setting Defaults for geoms and scales ggplot2
  16. Normalizing y-axis in histograms in R ggplot to proportion
  17. stacked bars within grouped bar chart
  18. R – emulate the default behavior of hist() with ggplot2 for bin width
  19. How to jitter both geom_line and geom_point by the same magnitude?
  20. How to show only part of the plot area of polar ggplot with facet?
  21. Different legend-keys inside same legend in ggplot2
  22. Plot two graphs in a same plot
  23. How to make variable bar widths in ggplot2 not overlap or gap
  24. ggplot multiple grouping bar
  25. How to use empty space produced by facet_wrap?
  26. pie chart with ggplot2 with specific order and percentage annotations
  27. R stat_smooth all points
  28. Color one point and add an annotation in ggplot2?
  29. Add number of observations per group in boxplot
  30. adding x and y axis labels in ggplot2

Leave a Comment