如何在同一图表上合并一条线和散点图? [英] How can I combine a line and scatter on same plotly chart?

问题描述

使用R plotly包创建时，由data.frame创建的两个单独的图表可以正常工作.
然而， 我不确定如何将它们组合为一个(大概是通过add_trace函数)

The two separate charts created from data.frame work correctly when created using the R plotly package.
However, I am not sure how to combine them into one (presumably with the add_trace function)

df <- data.frame(season=c("2000","2000","2001","2001"), game=c(1,2,1,2),value=c(1:4))

plot_ly(df, x = game, y = value, mode = "markers", color = season)
plot_ly(subset(df,season=="2001"), x = game, y = value, mode = "line")

预先感谢

推荐答案

您可以通过两种主要方法来进行此操作，如所建议的那样，制作一个ggplot并转换为plotly对象，如您所怀疑的那样通过在现有的plotly对象上使用add_trace(请参见下文).

There are two main ways you can do this with plotly, make a ggplot and convert to a plotly object as @MLavoie suggests OR as you suspected by using add_trace on an existing plotly object (see below).

library(plotly)

#data
df <- data.frame(season=c("2000","2000","2001","2001"), game=c(1,2,1,2),value=c(1:4))

#Initial scatter plot
p <- plot_ly(df, x = game, y = value, mode = "markers", color = season)

#subset of data
df1 <- subset(df,season=="2001")

#add line
p %>% add_trace(x = df1$game, y = df1$value, mode = "line")

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