geom_area在图层之间产生空白区域 [英] geom_area produces blank areas between layers
问题描述
我在data.frame tbl
中有以下数据:
库(标题)tbl<-structure(list(年= c(2007、2008、2008、2009、2009、2010、2010、2010、2011、2011、2011、2011、2012、2012、2012、2013、2013、2013、2014、2014、2014、2015、2015,2015、2015、2016、2016、2016、2016、2017、2017、2017、2018、2018、2018、2018,NA),类型= c("RLR","PLR","RLR","PLR","RLR","PLR","RLR","RR","PLR","RLR","RR",补充"," PLR," RLR," RR," PLR," RLR," RR," PLR," RLR," RR," LR," PLR," RLR,"RR","LR","Other","PLR","RR","LR","Other","RR","LR","Other","RR","RR"),n()= c(4L,2L,35L,14L,41L,34L,37L,61L,40L,21L,149L,1L,38L,17L,134L,41L,4L,115L,23L,3L,76L,1L,27L,2L,78L,28L,2L,4L,36L,33L,5L,32L,22L,3L,36L,5L))),row.names = c(NA,-36L),class = c("grouped_df","tbl_df","tbl","data.frame"),组=结构(列表(年= c(2007、2008、2009、2010、2011、2012、2013、2014、2015、2016、2017、2018,NA),.rows = list(1L,2:3,4:5,6:8,9:12,13:15,16:18,19:21,22:25,26:29,30:32,33:35,36L)),row.names = c(NA,-13L),class = c("tbl_df","tbl","data.frame"),.drop = TRUE))
我想使用以下代码创建分层(堆叠)的面积图:
ggplot(tbl,aes(x = year,y =`n()`,fill = Type))+geom_area(position ="stack")+theme_light()+scale_colour_brewer(type ="qual",palette = 1)+ylab("Count")
但是我得到的结果在各层之间的某些地方有奇怪的空白:
我发现了(v0.2.1)于2019-03-28创建
I have the following data in data.frame tbl
:
library(tibble)
tbl <- structure(list(
year = c(2007, 2008, 2008, 2009, 2009, 2010, 2010, 2010, 2011, 2011, 2011, 2011, 2012, 2012, 2012, 2013, 2013, 2013, 2014, 2014, 2014, 2015, 2015, 2015, 2015, 2016, 2016, 2016, 2016, 2017, 2017, 2017, 2018, 2018, 2018, NA),
Type = c("RLR", "PLR", "RLR", "PLR", "RLR", "PLR", "RLR", "RR", "PLR", "RLR", "RR", "Supplement", "PLR", "RLR", "RR", "PLR", "RLR", "RR", "PLR", "RLR", "RR", "LR", "PLR", "RLR", "RR", "LR", "Other", "PLR", "RR", "LR", "Other", "RR", "LR", "Other", "RR", "RR"),
`n()` = c(4L, 2L, 35L, 14L, 41L, 34L, 37L, 61L, 40L, 21L, 149L, 1L, 38L, 17L, 134L, 41L, 4L, 115L, 23L, 3L, 76L, 1L, 27L, 2L, 78L, 28L, 2L, 4L, 36L, 33L, 5L, 32L, 22L, 3L, 36L, 5L)),
row.names = c(NA, -36L),
class = c("grouped_df", "tbl_df", "tbl", "data.frame"),
groups = structure(list(
year = c(2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, NA),
.rows = list(1L, 2:3, 4:5, 6:8, 9:12, 13:15, 16:18, 19:21, 22:25, 26:29, 30:32, 33:35, 36L)),
row.names = c(NA, -13L),
class = c("tbl_df", "tbl", "data.frame"),
.drop = TRUE))
I wanted to create a layered (stacked) area chart, using the following code:
ggplot(tbl,aes(x=year,y=`n()`,fill=Type)) +
geom_area(position="stack") +
theme_light() +
scale_colour_brewer(type="qual",palette = 1) +
ylab("Count")
But the result I'm getting has strange blank gaps in some places between the layers:
I found this question but that doesn't seem to be the issue I'm having - there's no negative numbers in my data.
Any ideas how to fix this?
Here's what seems to be going here: New Type
s are added and old ones removed from the full list at different times. When that happens, the area for these starts with a straight vertical line, but the area for the Type
above this new one does diagonally from 0 to the new starting point for this layer. That doesn't sound like a reasonable behaviour to me. How do I get ggplot to plot all the colours one on top of the other rather than trying to create ribbons? I thought that was the whole point of geom_area
...
There are some (year, Type) combinations that are missing (implicit zeros). If you add them (explicit zeros), there are no empty areas.
library(dplyr) # for %>% operator
library(tidyr) # for drop_na function
# Your data here....
tbl <- tbl %>%
# Ungroup or `complete` won't work as expected
ungroup() %>%
# There is one NA year
drop_na() %>%
# Add all (Type, year) combinations, filling in with 0s where `n()` is not observed
complete(Type, year, fill = list(`n()` = 0))
ggplot(tbl, aes(x=year,y=`n()`, group=Type, fill=Type)) +
geom_area(alpha = 0.5) +
theme_light() +
scale_colour_brewer(type="qual",palette = 1) +
ylab("Count")
Created on 2019-03-28 by the reprex package (v0.2.1)
这篇关于geom_area在图层之间产生空白区域的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!