我有两个示例数据框,如下所示
library(shiny)
df1 <- data.frame(words = c("bat", "vat","cat","mat"), count = c(3420, 2098, 2003, 1501), words_count = c("bat (3420)","vat (2098)", "cat (2003)", "mat (1501)"), stringsAsFactors = FALSE)
df2 <- data.frame(class = c("A","B","C","D"), bat = c(10,0,30,20), vat = c(0,0,10,30), cat = c(20,30,0,10), mat = c(20,20,0,0), stringsAsFactors = FALSE)
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使用下面的代码,我想从下拉菜单中提取列名称(由 df1 制成),并使用提取的值在绘图中绘制条形图,使用提取的值作为 df2 中的列。我正在做这个是 Rmd。
inputPanel(
selectInput("words", label = "Choose the word",
choices = df1$words_count,
selected = df1$words_count[1], width = '100%')
)
renderPlot({
# Extract the word from drop down
col_word <- df1 …Run Code Online (Sandbox Code Playgroud) 您好,我有一个脚本,需要用户输入 4 个“是”,而第 5 个提示需要一个数字。
有没有办法在 4 个“是”之后停止 yes 命令,以便用户可以在第五个提示中输入数字。