如何在Plotly(R)中移动次坐标轴标题以避免与标记重叠？

以下三种方法可快速解决标题与刻度重叠的问题，按需选择即可：

方法1：调整标题与轴的间距 #

通过设置yaxis2的title.standoff属性，增加标题与坐标轴刻度的像素距离，直接拉开两者间距：

plotly::plot_ly(data = mtcars) %>% 
  plotly::add_trace(
    x=~mpg, 
    y=~wt, 
    type='scatter', 
    mode='markers', 
    yaxis = "y",
    showlegend=F
  ) %>% 
  plotly::add_trace(
    y=~drat, 
    type='scatter', 
    mode='markers', 
    yaxis = "y2",
    showlegend=F
  ) %>% 
  plotly::layout(
    yaxis = list(
      title="wt",
      showgrid=F
    ),
    yaxis2 = list(
      overlaying = "y",
      side = "right",
      title = list(text = "long title", standoff = 25) # 新增standoff参数调整间距
    )
  )

方法2：扩大图表右侧边距 #

在layout中设置margin参数，给右侧留出足够空间容纳标题：

plotly::plot_ly(data = mtcars) %>% 
  plotly::add_trace(
    x=~mpg, 
    y=~wt, 
    type='scatter', 
    mode='markers', 
    yaxis = "y",
    showlegend=F
  ) %>% 
  plotly::add_trace(
    y=~drat, 
    type='scatter', 
    mode='markers', 
    yaxis = "y2",
    showlegend=F
  ) %>% 
  plotly::layout(
    yaxis = list(
      title="wt",
      showgrid=F
    ),
    yaxis2 = list(
      overlaying = "y",
      side = "right",
      title = "long title"
    ),
    margin = list(r = 80) # 右侧边距，数值按需调整
  )

方法3：旋转标题方向 #

将标题旋转为垂直方向，避免横向占用空间与刻度重叠：

plotly::plot_ly(data = mtcars) %>% 
  plotly::add_trace(
    x=~mpg, 
    y=~wt, 
    type='scatter', 
    mode='markers', 
    yaxis = "y",
    showlegend=F
  ) %>% 
  plotly::add_trace(
    y=~drat, 
    type='scatter', 
    mode='markers', 
    yaxis = "y2",
    showlegend=F
  ) %>% 
  plotly::layout(
    yaxis = list(
      title="wt",
      showgrid=F
    ),
    yaxis2 = list(
      overlaying = "y",
      side = "right",
      title = list(text = "long title", angle = 270) # 旋转标题为垂直方向
    )
  )

内容的提问来源于stack exchange，提问作者colej1390