# ggplot2 绘制海拔高度与物种数目的 LOWESS 曲线
library(ggplot2)
library(patchwork)
data(PlantCounts, package = "MSG")
set.seed(717)
gg_plant =
ggplot(PlantCounts, aes(altitude, counts)) +
geom_point(color = rgb(0, 0, 0, 0.3))
gg_plant1 = gg_plant
for (i in seq(0.02, 1, length = 70)) {
gg_plant1 = gg_plant1 +
geom_smooth(se = FALSE, span = i, color = rgb(0.4, i, 0.4)) +
labs(x = "高度", y = "频数")
}
gg_plant2 = gg_plant
for (i in 1:200) {
# 有放回抽取 200 个样本序号
idx = sample(nrow(PlantCounts), 300, TRUE)
gg_plant2 = gg_plant2 +
geom_smooth(data = PlantCounts[idx, ], se = FALSE,
color = rgb(0, 0, 0, 0.1)) +
labs(x = "高度", y = "频数")
}
print(gg_plant1 | gg_plant2)
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.