3

我的数据框看起来像:

      rankA      rankB     V1       V2
1     0-1 w      1-2 t     8.636042 10.43002
2     0-1 w      3-5 t     6.495266 10.52126
3     0-1 w      6-10 t    5.480639 10.56230
4     0-1 w      +10 t     4.897840 10.64759
5     2-3 w      1-2 t     7.677400 10.45409
6     2-3 w      3-5 t     5.420535 10.47965
7     2-3 w      6-10 t    4.499810 10.51640
8     2-3 w      +10 t     3.496508 10.44883

我需要一个交互式热图。我说交互式是因为:

  • 我需要在 X 轴上绘制等级 A
  • 我需要在 Y 轴上绘制等级 B
  • 我需要用 V1 给方块上色
  • 当鼠标指针在一个方块上时,一个消息框必须显示 V2 值。

我刚刚看过heatmaply文档,但我不知道如何mtcars将 heatmaply 复制到我的案例(tidyverse库?)。

有任何想法吗?有没有其他的包?

4

1 回答 1

4

如果您不需要热图两侧的树状图,以下是可能的选项:

选项 1。创建 ggplot 对象并使用以下命令进行转换plotly::ggplotly

library(ggplot2)

p <- ggplot(df,
       aes(x = rankA, y = rankB, fill = V1, label = V2)) +
  geom_tile() +
  geom_label(fill = "white") +
  viridis::scale_fill_viridis() # to match other packages' default palettes

plotly::ggplotly(p)

ggplot

选项 2。创建情节对象:

plotly::plot_ly(
  data = df,
  x = ~rankA, y = ~rankB, z = ~V1, text = ~paste('V2: ', V2),
  hoverinfo = "text",
  type = "heatmap"
)

(此版本在悬停时显示“V2: /value of V2/”。但它没有被导出的屏幕截图捕获。)

情节地

如果您真的需要树状图,恐怕我还没有找到一种方法将其输入到 heatmaply 的论点中。但是时代很绝望,可以考虑以下...

选项 3。使用 heatmaply 库创建 plotly 对象并更改底层代码

# create the heatmap object hm (on hover, it will show the rankA / rankB / V1 values)
hm <- heatmaply::heatmaply(long_data = df %>% 
                             select(rankB, rankA, V1) %>%
                             rename(name = rankB, variable = rankA, value = V1))

# look through hm's structure for hover text. I found it below, but I haven't 
# used plotly enough to know if it's always going to be in the same place
str(hm)

> hm$x$data[4][[1]]$text
     [,1]                                                  [,2]                                                 
[1,] "value: 8.636042<br />column: 0-1 w<br />row: 1-2 t"  "value: 7.677400<br />column: 2-3 w<br />row: 1-2 t" 
[2,] "value: 6.495266<br />column: 0-1 w<br />row: 3-5 t"  "value: 5.420535<br />column: 2-3 w<br />row: 3-5 t" 
[3,] "value: 5.480639<br />column: 0-1 w<br />row: 6-10 t" "value: 4.499810<br />column: 2-3 w<br />row: 6-10 t"
[4,] "value: 4.897840<br />column: 0-1 w<br />row: +10 t"  "value: 3.496508<br />column: 2-3 w<br />row: +10 t" 
attr(,"apiSrc")
[1] TRUE

# replace with V2's values, making sure the rows & columns are matched correctly
df %>% 
  select(-V1) %>% 
  mutate(V2 = paste("V2:", V2)) %>%
  tidyr::spread(rankA, V2) %>% 
  arrange(factor(rankB, levels = c("1-2 t", "3-5 t", "6-10 t", "+10 t"))) %>%
  select(-rankB) %>% as.matrix() -> hm$x$data[4][[1]]$text

hm

(和以前一样,这个版本在悬停时显示“V2: /value of V2/”。但它没有被导出的屏幕截图捕获。)

热图

数据:

df <- read.table(header = T, stringsAsFactors = F, 
                 text = '      rankA      rankB     V1       V2
                 1     "0-1 w"     "1-2 t"     8.636042 10.43002
                 2     "0-1 w"      "3-5 t"     6.495266 10.52126
                 3     "0-1 w"      "6-10 t"    5.480639 10.56230
                 4     "0-1 w"      "+10 t"     4.897840 10.64759
                 5     "2-3 w"      "1-2 t"     7.677400 10.45409
                 6     "2-3 w"      "3-5 t"     5.420535 10.47965
                 7     "2-3 w"      "6-10 t"    4.499810 10.51640
                 8     "2-3 w"      "+10 t"     3.496508 10.44883')
于 2017-09-14T11:49:30.023 回答