KableExtra - collapse_rows对准

Question

我将下面的代码放在我的rows文档中，它根据数据框架的结构很好地折叠了行。如您所见，有一个水平对齐数据的align参数。是否有类似的align_vertical参数允许我垂直对齐？特别是，我希望下面输出的"a“和"b”垂直对齐。目前，它们是垂直中心对齐。

library(kableExtra)
library(knitr)

collapse_rows_dt <- data.frame(C1 = c(rep("a", 10), rep("b", 5)),
                 C2 = c(rep("c", 7), rep("d", 3), rep("c", 2), rep("d", 3)),
                 C3 = 1:15,
                 C4 = sample(c(0,1), 15, replace = TRUE))

kable(collapse_rows_dt, "html", align = "c") %>%
  kable_styling(full_width = F) %>%
  column_spec(1, bold = T) %>%
  collapse_rows(columns = 1:2)

Answer 1

如果您更改了命令的顺序(在last) you can useextra_cssto change thevertical-align`属性处执行column_spec：

library(kableExtra)
library(knitr)

collapse_rows_dt <- data.frame(C1 = c(rep("a", 10), rep("b", 5)),
                               C2 = c(rep("c", 7), rep("d", 3), rep("c", 2), rep("d", 3)),
                               C3 = 1:15,
                               C4 = sample(c(0,1), 15, replace = TRUE))

kable(collapse_rows_dt, "html", align = "c") %>%
  kable_styling(full_width = F) %>%
  collapse_rows(columns = 1:2) %>%
  column_spec(1, bold = T, extra_css = 'vertical-align: top !important;')

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