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r - 点和线不会连接

转载 作者:行者123 更新时间:2023-12-02 17:41:11 24 4
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我试图连接我的情节中的点并尝试了 geom_point()+geom_line() 但它不起作用。

下面的代码只是为了积分。有没有人知道为什么 geom_line() 不添加任何行?

DensityE = read.csv("DensityElk.csv", header = TRUE)
str(DensityE)

DensityE$Date <- factor(DensityE$Date, levels=
c("20-May","3-Jun",
"17-Jun","1-Jul","16-Jul",
"22-Jul", "15-Aug"), order=TRUE)

ggplot(data=DensityE, aes(Date,Density)) +
geom_point(aes(shape = factor(Genus)), size = 4,
position="jitter") +
theme_bw() + xlab("Date") +
ylab("Density per m2") + ggtitle("COP 1992") +
opts(legend.key = theme_blank()) +
opts (legend.title = theme_blank())+
opts(legend.text = theme_text(size=9))

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