我想制作一个动画,其中一些线折叠成点(即平均值),以证明可以用平均值来概括这些线。
这样的事情。
首先,设置数据和线图:
library(tidyverse)
# remotes::install_github("njtierney/brolgar)
# library(brolgar)
# h_cut <- sample_n_keys(heights, 5) %>%
# mutate(type = "raw")
#
# datapasta::dpasta(h_cut)
h_cut <- tibble::tribble(
~country, ~year, ~height_cm, ~continent, ~type,
"Bolivia", 1890, 163.594, "Americas", "raw",
"Bolivia", 1900, 162.45, "Americas", "raw",
"Bolivia", 1930, 162.5, "Americas", "raw",
"Bolivia", 1940, 163.4, "Americas", "raw",
"Bolivia", 1950, 162.482, "Americas", "raw",
"Bolivia", 1960, 163.182, "Americas", "raw",
"Bolivia", 1970, 163.886, "Americas", "raw",
"Bolivia", 1980, 164.191, "Americas", "raw",
"Bolivia", 1990, 168.1, "Americas", "raw",
"Bolivia", 2000, 168.7, "Americas", "raw",
"Ethiopia", 1860, 169.3, "Africa", "raw",
"Ethiopia", 1880, 167.461, "Africa", "raw",
"Ethiopia", 1910, 161.451, "Africa", "raw",
"Ethiopia", 1920, 166.636, "Africa", "raw",
"Ethiopia", 1930, 167.27, "Africa", "raw",
"Ethiopia", 1940, 168.5, "Africa", "raw",
"Ethiopia", 1950, 166.823, "Africa", "raw",
"Ethiopia", 1960, 167.512, "Africa", "raw",
"Ethiopia", 1970, 167.49, "Africa", "raw",
"Ethiopia", 1980, 167.253, "Africa", "raw",
"Georgia", 1840, 165.5, "Asia", "raw",
"Georgia", 1860, 163, "Asia", "raw",
"Georgia", 1890, 164.26, "Asia", "raw",
"Georgia", 2000, 173.2, "Asia", "raw",
"Paraguay", 1900, 165.615, "Americas", "raw",
"Paraguay", 1930, 165.363, "Americas", "raw",
"Paraguay", 1990, 172.6, "Americas", "raw",
"Spain", 1740, 163.3, "Europe", "raw",
"Spain", 1750, 163.6, "Europe", "raw",
"Spain", 1760, 163.2, "Europe", "raw",
"Spain", 1770, 164.3, "Europe", "raw",
"Spain", 1780, 163.3, "Europe", "raw",
"Spain", 1830, 161, "Europe", "raw",
"Spain", 1840, 163.7, "Europe", "raw",
"Spain", 1850, 162.5, "Europe", "raw",
"Spain", 1860, 162.7, "Europe", "raw",
"Spain", 1870, 162.6, "Europe", "raw",
"Spain", 1880, 163.9, "Europe", "raw",
"Spain", 1890, 164, "Europe", "raw",
"Spain", 1900, 164.6, "Europe", "raw",
"Spain", 1910, 165.1, "Europe", "raw",
"Spain", 1920, 165.6, "Europe", "raw",
"Spain", 1930, 165.2, "Europe", "raw",
"Spain", 1940, 166.3, "Europe", "raw",
"Spain", 1950, 170.8, "Europe", "raw",
"Spain", 1960, 174.2, "Europe", "raw",
"Spain", 1970, 175.2, "Europe", "raw",
"Spain", 1980, 175.6, "Europe", "raw"
)
ggplot(h_cut,
aes(x = year,
y = height_cm,
colour = country)) +
geom_line() +
theme(legend.position = "bottom")
然后,显示要点
# demonstrate these lines collapsing down onto a point
h_sum <- h_cut %>%
group_by(country) %>%
summarise(height_cm = mean(height_cm)) %>%
mutate(year = max(h_cut$year),
type = "summary")
ggplot(h_sum,
aes(x = year,
y = height_cm)) +
geom_point()
这些可以像这样组合成一个图:
# combined:
p <- ggplot(h_cut,
aes(x = year,
y = height_cm,
colour = country)) +
geom_line() +
geom_point(data = h_sum,
aes(x = year,
y = height_cm,
colour = country))
p
手动从线到点过渡
library(gganimate)
anim <- p +
transition_layers(keep_layers = FALSE) +
enter_grow() +
exit_shrink() +
ease_aes(default = "cubic-in-out")
anim
但是有什么方法可以使线缩小到点吗?
h_full <- h_sum %>% full_join(h_cut)
#> Joining, by = c("country", "height_cm", "year", "type")
h_full
#> # A tibble: 53 x 5
#> country height_cm year type continent
#> <chr> <dbl> <dbl> <chr> <chr>
#> 1 Bolivia 164. 2000 summary <NA>
#> 2 Ethiopia 167. 2000 summary <NA>
#> 3 Georgia 166. 2000 summary <NA>
#> 4 Paraguay 168. 2000 summary <NA>
#> 5 Spain 166. 2000 summary <NA>
#> 6 Bolivia 164. 1890 raw Americas
#> 7 Bolivia 162. 1900 raw Americas
#> 8 Bolivia 162. 1930 raw Americas
#> 9 Bolivia 163. 1940 raw Americas
#> 10 Bolivia 162. 1950 raw Americas
#> # … with 43 more rows
p <- ggplot(h_full,
aes(x = year,
y = height_cm,
group = country,
colour = type)) +
geom_point() +
geom_line()
anim <- p + transition_states(type)
anim
#> Error in `$<-.data.frame`(`*tmp*`, ".id", value = c(1L, 1L, 1L, 1L, 1L, : replacement has 250 rows, data has 5
由reprex package(v0.3.0)于2019-07-25创建
答案 0 :(得分:1)
似乎您可以将多个输入和退出动画堆叠在一起,例如exit_shrink
和exit_fly
。
考虑到您提供的代码,我可以通过添加exit_fly(x_loc = 2000)
来使线条缩小为点,anim <- p +
transition_layers(keep_layers = FALSE) +
enter_grow() +
exit_fly(x_loc = 2000) +
exit_shrink() +
ease_aes(default = "cubic-in-out")
anim
指定了线条在x轴上的飞行角度为2000。
这是指定动画的已编辑代码块
{
[portfolioId[0]]: "Dhaka",
[portfolioId[1]]: "Chittagong",
[portfolioId[2]]: "Sylhet",
}
提供以下动画
由于某些原因,这些点的enter_grow()并不如您想的那样平滑。