[英]Conditionally fill cells in specific columns with colour based on value in another column
I have the following data frame: 我有以下数据框:
col1 <- rep(c("A","B","C","D"),10)
col2 <- rep(c(1,0),10)
col3 <- rep(c(0,1),10)
col4 <- rep(c(1,0),10)
col5 <- rep(c(0,1),10)
test_df <- data.frame(col1, col2, col3, col4, col5, stringsAsFactors = F)
I would like to color specific row cells across multiple columns based on the values in col1, and also add a vertical line (indicating a limit) between two columns in the table (based on the same value in col1) 我想根据col1中的值为多个列上的特定行单元着色,并在表中的两列之间添加一条垂直线(表示一个限制)(基于col1中的相同值)
For example, if col1 == "A", then i want to color the cells in col2 and col5 grey, in the same row as col1 == A. 例如,如果col1 ==“A”,那么我想为col2和col5灰色的单元格着色,与col1 == A在同一行。
In dummy code: 在虚拟代码中:
if col1 == A: color columns(col2, col5), vert.line between col3 and col4
if col1 == B: color columns(col2, col3, col5), vert.line between col4 and col5
if col1 == C: color columns(col2, col4, col5), vert.line between col3 and col4
if col1 == D: color columns(col2, col5), vert.line between col2 and col3
I would like to specify these rules so they can easily be changed if necessary. 我想指定这些规则,以便在必要时可以轻松更改。
I want to end up with something like this (asterisks indicate cell coloring): 我想最终得到这样的东西(星号表示细胞着色):
col1 col2 col3 col4 col5
A *1* 0 | 1 *0*
B *0* *1* 0 | *1*
C *1* *0* | 1 *0*
D *0* | 1 0 *1*
A *1* 0 | 1 *0*
B *0* *1* 0 | *1*
C *1* *0* | 1 *0*
D *0* | 1 0 *1*
I am presenting this in a table in a shiny app and markdown document. 我在一个闪亮的应用程序和降价文档的表格中呈现这一点。 Is there any way to do this with f.
有没有办法用f做到这一点。 ex xtable or dplyr?
ex xtable还是dplyr?
There is a solution using tableHTML
in combination with 2 functions to replicate the logic. 有一个解决方案使用
tableHTML
结合2个函数来复制逻辑。
First, you need to create css for each column that provides the styling information that should be applied to the table. 首先,您需要为每个列创建css,以提供应该应用于表的样式信息。 I have split it into 2 functions, one for the background, and one for the line between columns.
我把它分成2个函数,一个用于背景,一个用于列之间的行。
library(tableHTML)
The first function changes the colour of cells based on the value in col1
. 第一个函数根据
col1
的值更改单元格的颜色。 You can change them by providing different colours in the arguments of the function. 您可以通过在函数的参数中提供不同的颜色来更改它们。
get_background_column_css <- function(col1,
a_col = "lightgray",
b_col = "steelblue",
c_col = "lightgreen",
d_col = "indianred",
default = "white") {
# create css for col2
background_color_col2 <- ifelse(col1 == "A", a_col,
ifelse(col1 == "B", b_col,
ifelse(col1 == "C", c_col,
ifelse(col1 == "D", d_col, default
))))
css_col2 <- setNames(list(list(c("background-color"),
list(background_color_col2))), "col2")
# create css for col3
background_color_col3 <- ifelse(col1 == "B", b_col,
ifelse(col1 == "C", c_col, default))
css_col3 <- setNames(list(list(c("background-color"),
list(background_color_col3))), "col3")
# create css for col4
background_color_col4 <- rep("", length(col1))
css_col4 <- setNames(list(list(c("background-color"),
list(background_color_col4))), "col4")
# create css for col5
background_color_col5 <- ifelse(col1 == "A", a_col,
ifelse(col1 == "B", b_col,
ifelse(col1 == "C", c_col,
ifelse(col1 == "D", d_col, default
))))
css_col5 <- setNames(list(list(c("background-color"),
list(background_color_col5))), "col5")
list(css_col2, css_col3, css_col4, css_col5)
}
The second function adds a border between columns. 第二个函数在列之间添加边框。
get_border_column_css <- function(col1) {
# create css for col2
border_col2 <- ifelse(col1 == "D", "1px solid black", "0px")
css_col2 <- setNames(list(list(c("border-right"),
list(border_col2))), "col2")
# create css for col3
border_col3 <- ifelse(col1 == "C", "1px solid black", "0px")
css_col3 <- setNames(list(list(c("border-right"),
list(border_col3))), "col3")
# create css for col4
border_col4 <- ifelse(col1 == "B", "1px solid black", "0px")
css_col4 <- setNames(list(list(c("border-right"),
list(border_col4))), "col4")
# create css for col5
border_col5 <- rep("0px", length(col1))
css_col5 <- setNames(list(list(c("border-right"),
list(border_col5))), "col5")
list(css_col2, css_col3, css_col4, css_col5)
}
In order to test the function, I only use the first 4 rows (since they have all the combinations of possibilities): 为了测试函数,我只使用前4行(因为它们具有所有可能性的组合):
test_df <- head(test_df, 4)
Next, I create 1 css list for the background-color
and 1 css list for the border
that can be supplied to add_css_conditional_column()
接下来,我为
background-color
创建1个css列表,为可以提供给add_css_conditional_column()
的border
创建1个css列表
css_background = get_background_column_css(test_df$col1)
css_border = get_border_column_css(test_df$col1)
Next, I create a tableHTML
object. 接下来,我创建一个
tableHTML
对象。
tableHTML <- tableHTML(test_df,
rownames = FALSE,
border = 0)
Next, I add the background css in a loop to each column: 接下来,我将循环中的背景css添加到每个列:
for (i in 1:4) {
tableHTML <- tableHTML %>%
add_css_conditional_column(conditional = "colour_rank",
colour_rank_css = css_background[[i]],
columns = names(test_df)[i + 1])
}
And the border css: 边境css:
for (i in 1:4) {
tableHTML <- tableHTML %>%
add_css_conditional_column(conditional = "colour_rank",
colour_rank_css = css_border[[i]],
columns = names(test_df)[i + 1])
}
This is the result: 这是结果:
tableHTML
Here is a partial (doesn't do the custom line separation between columns) solution. 这是一个部分(不做列之间的自定义行分隔)解决方案。
For the following, I leverage the package formattable
. 对于以下内容,我利用了包
formattable
。
The dataframe used is df
as defined in your question. 使用的数据框是
df
如您的问题中所定义。
library(formattable)
library(dplyr)
## Function that create the formula for the coloring of each row
## You could also personalize the color
color_row <- function(r,
c,
color = 'gray') {
return(area(row = r, col = c) ~ color_tile(color, color))
}
## Create database that containes info on coloring pattern
df_color <- data_frame(col1 = c('A', 'B', 'C', 'D'),
limits = list(c(2,5), c(2,3,5), c(2,4,5), c(2,5)))
## Join it to original data.frame
df_join <- df %>% left_join(df_color)
## Create list with all the appropriate formulas to color data frame
format_list <- mapply(color_row, r = 1:nrow(df), c = df_join$limits, color = 'gray')
## Pass it to formattable
df_final <- formattable(df,format_list)
The result looks like this: 结果如下:
This can be easily used in RNotebook and Shiny. 这可以很容易地用在RNotebook和Shiny中。 Following example codes for each (for the code below to work, you need the result of the previous code
df_final
to be in your environment): 下面是每个示例代码(为了使下面的代码工作,您需要将以前的代码
df_final
的结果放在您的环境中):
---
title: "R Notebook"
output: html_notebook
---
```{r}
library(dplyr)
library(formattable)
format_table(df_final)
```
Shiny: 闪亮:
library(shiny)
library(formattable)
# table example
shinyApp(
ui = fluidPage(
fluidRow(
column(12,
formattableOutput('table')
)
)
),
server = function(input, output) {
output$table <- renderFormattable(df_final)
}
)
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