R plotly覆盖热图

Question

我有两个矩阵，A 和 B，我想用 plotly 制作两个热图，并将它们叠加

library(plotly)
A = matrix(c(1:8, rep(0, 8)), ncol = 4)
B = matrix(c(rep(0, 8), 1:8), ncol = 4)
PA <- plot_ly(z = A, type = "heatmap", colors = colorRamp(c("white", "green")))
PB <- plot_ly(z = B, type = "heatmap", colors = colorRamp(c("white", "red")))

当我尝试叠加它们时，它们确实被夸大了，但第二个热图完全掩盖了第一个。

PA %>% add_trace(z = B, type = "heatmap")

我可以更改不透明度以“看到”两个热图

PA %>% add_trace(z = B, opacity = 0.5, type = "heatmap")

但是真的不好看，而且我不能为每个热图设置不同的颜色。

是否有任何优雅的方式来覆盖它们，如下例所示？非常感谢。

p = plot_ly(x = rnorm(500), opacity = 0.6, type = "histogram") %>%
add_trace(x = rnorm(500)+1) %>%
layout(barmode="overlay")

Answer 1

我不确定这是否可能，但也许你可以欺骗它。你可以试试：

ay <- list(
  title = "",
  zeroline = FALSE,
  showline = FALSE,
  showticklabels = FALSE,
  showgrid = FALSE
)

PB <- PB %>% layout(yaxis = ay, xaxis = list(range = c(1.5, 3.5), dtick = 1))
PA <- PA %>% layout(yaxis = list(dtick = 1), xaxis = list(range = c(-0.5, 1.5), dtick = 1))
subplot(PA, PB, nrows = 1, shareX = TRUE, shareY = FALSE)