叠加条形图以 plotly 显示基准数据

Question

我正在为以下数据框使用三个系列绘制条形图：

library(plotly)
library(dplyr)

groups = c("high","low")
A1 = runif(2, min = 0, max = 1)
A2 = runif(2, min = 0, max = 1)
B1 = runif(2, min = 0, max = 1)
B2 = runif(2, min = 0, max = 1)
C1 = runif(2, min = 0, max = 1)
C2 = runif(2, min = 0, max = 1)

dfPlot = data.frame(groups, A1, A2,B1, B2,C1, C2 )

必须将 A2、B2 和 C2 绘制为基准数据。我使用下面的代码以条形图绘制 A1、B1 和 C1，然后将基准绘制为覆盖条形图。我还尝试将基准值绘制为点，但看起来不太好。

chrt_title <- list(
  family = "Arial",
  size = 14,
  color ="#555555")  
ax <- list(
  title = "",
  zeroline = FALSE,
  showline = FALSE,
  showticklabels = FALSE,
  showgrid = FALSE
)


tit<-function(txt) {
  jt<-  list(
    text = txt,
    font = chrt_title,
    xref = "paper",
    yref = "paper",
    yanchor = "bottom",
    xanchor = "center",
    align = "center",
    x = 0.5,
    y = 0,
    showarrow = FALSE, yshift=-30
  ) 
  
  return(jt)
  
}

cl<-c("#33C9FF", "#3385FF")

k<-plot_ly(x = dfPlot [,1],
           y = dfPlot [,2],
           type = 'bar', name = "Total", marker=list(color=cl))
k<-k %>%
  add_trace(x = dfPlot[,1],
            y = dfPlot[,3],
            type = 'bar', width = 0.3, name = "Benchmark",marker=list(color="#FFAB33"))


k<-k %>%  layout(xaxis = ax,barmode = 'overlay',  showlegend=TRUE, annotations=tit("AA"), bargap=0.01)
j<-plot_ly(x = dfPlot [,1],
           y = dfPlot [,4],
           type = 'bar', name = "Total", marker=list(color=cl))
j<-j %>%
  add_trace(x = dfPlot[,1],
            y = dfPlot[,5],
            type = 'bar', width = 0.3, name = "Benchmark",marker=list(color="#FFAB33"))
j<-j %>%  layout(xaxis = ax,barmode = 'overlay',  showlegend=FALSE, annotations=tit("BB"), bargap=0.01)


m<-plot_ly(x = dfPlot [,1],
           y = dfPlot [,6],
           type = 'bar', name = "Total", marker=list(color=cl))
m<-m %>%
  add_trace(x = dfPlot[,1],
            y = dfPlot[,7],
            type = 'bar', width = 0.3, name = "Benchmark",marker=list(color="#FFAB33"))
m<-m %>%  layout(xaxis = ax,barmode = 'overlay',  showlegend=FALSE, annotations=tit("CC") , bargap=0.01)

  
all<-subplot(k,j,m, nrows=1,  shareY = TRUE,margin = 0.008 )
all<-all%>% layout( legend = list(orientation = "h",
                                  xanchor = "center",  
                                  x = 0.5, y = 7),  showlegend=TRUE)
all

叠加条形图的问题是图例不正确。条形图中有三种颜色，所以我需要三个图例，在这张图表中，图例是重复的。 如果更正带有此代码的图例，或者基准可以以不同的方式显示为带有图例的点，我的问题将得到解决。

提前感谢所有建议！

Answer 1

您可以使用legendgroup 并隐藏重复项：

library(plotly)
library(dplyr)

groups = c("high", "low")
A1 = runif(2, min = 0, max = 1)
A2 = runif(2, min = 0, max = 1)
B1 = runif(2, min = 0, max = 1)
B2 = runif(2, min = 0, max = 1)
C1 = runif(2, min = 0, max = 1)
C2 = runif(2, min = 0, max = 1)

dfPlot = data.frame(groups, A1, A2, B1, B2, C1, C2)

chrt_title <- list(family = "Arial",
                   size = 14,
                   color = "#555555")
ax <- list(
  title = "",
  zeroline = FALSE,
  showline = FALSE,
  showticklabels = FALSE,
  showgrid = FALSE
)

tit <- function(txt) {
  jt <-  list(
    text = txt,
    font = chrt_title,
    xref = "paper",
    yref = "paper",
    yanchor = "bottom",
    xanchor = "center",
    align = "center",
    x = 0.5,
    y = 0,
    showarrow = FALSE,
    yshift = -30
  )
  
  return(jt)
}

cl <- c("#33C9FF", "#3385FF")

k <- plot_ly(
  x = dfPlot [, 1],
  y = dfPlot [, 2],
  type = 'bar',
  name = "Total",
  legendgroup = "Total",
  marker = list(color = cl)
)
k <- k %>%
  add_trace(
    x = dfPlot[, 1],
    y = dfPlot[, 3],
    type = 'bar',
    width = 0.3,
    name = "Benchmark",
    legendgroup = "Benchmark",
    marker = list(color = "#FFAB33")
  )

k <-
  k %>%  layout(
    xaxis = ax,
    barmode = 'overlay',
    showlegend = TRUE,
    annotations = tit("AA"),
    bargap = 0.01
  )
j <- plot_ly(
  x = dfPlot [, 1],
  y = dfPlot [, 4],
  type = 'bar',
  name = "Total",
  legendgroup = "Total",
  showlegend = FALSE,
  marker = list(color = cl)
)
j <- j %>%
  add_trace(
    x = dfPlot[, 1],
    y = dfPlot[, 5],
    type = 'bar',
    width = 0.3,
    name = "Benchmark",
    legendgroup = "Benchmark",
    showlegend = FALSE,
    marker = list(color = "#FFAB33")
  )
j <-
  j %>%  layout(
    xaxis = ax,
    barmode = 'overlay',
    showlegend = FALSE,
    annotations = tit("BB"),
    bargap = 0.01
  )


m <- plot_ly(
  x = dfPlot [, 1],
  y = dfPlot [, 6],
  type = 'bar',
  name = "Total",
  legendgroup = "Total",
  showlegend = FALSE,
  marker = list(color = cl)
)
m <- m %>%
  add_trace(
    x = dfPlot[, 1],
    y = dfPlot[, 7],
    type = 'bar',
    width = 0.3,
    name = "Benchmark",
    legendgroup = "Benchmark",
    showlegend = FALSE,
    marker = list(color = "#FFAB33")
  )
m <-
  m %>%  layout(
    xaxis = ax,
    barmode = 'overlay',
    showlegend = FALSE,
    annotations = tit("CC") ,
    bargap = 0.01
  )

all <- subplot(k,
               j,
               m,
               nrows = 1,
               shareY = TRUE,
               margin = 0.008)
all <- all %>% layout(
  legend = list(
    orientation = "h",
    xanchor = "center",
    x = 0.5,
    y = 7
  ),
  showlegend = TRUE
)
all