Shiny 和 Rcharts y 轴标记？答案

【问题标题】：Shiny and Rcharts y-axis marks?Shiny 和 Rcharts y 轴标记？
【发布时间】：2014-06-08 14:05:22
【问题描述】：

我有以下代码工作：

library(rCharts)
library(shiny)
X <- data.frame(Var1 = c(1L, 2L, 3L, 4L, 5L, 6L, 7L,8L, 9L, 10L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L, 1L, 2L,3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L),
                Var2 = structure(c(1L,1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,2L, 2L, 2L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L), .Label = c("control","treatment1", "treatment2"), class = "factor"),
                Freq = c(0L,0L, 3L, 2L, 6L, 9L, 13L, 36L, 50L, 497L, 0L, 2L, 1L, 3L, 6L, 4L, 11L, 29L, 50L, 499L, 1L, 2L, 0L, 2L, 5L, 6L, 12L, 22L, 63L,490L)
)
runApp(
  list(ui = fluidPage(
    titlePanel("Quiz 3 grades distribution"),

    fluidRow(
      column(3,
             #helpText("Select grade in Quiz 1 before the treatment:"),    
             selectInput("select", label = h3("Grade Quiz 1 before the treatment:"), 
                         choices = list("All" = 0, "Not Perfect" = 1, "Perfect" = 2), 
                         selected = 0)
      ),

      column(9, div(showOutput("histogram","nvd3")), style = 'align:center;')
      , tags$head(tags$style(HTML(".nv-axislabel {font: 22px Arial;}"))) # to style labels
    )
  ),
  server = shinyServer(
    function(input, output, session) {
      output$histogram <- renderChart2({
        n2 <- nPlot(Freq ~ Var1, group = 'Var2', data = X, type = 'multiBarChart')
        n2$params$width <- 500
        n2$params$height <- 400
        n2$xAxis(axisLabel = "my x axis label")
        n2$yAxis(axisLabel = "my y axis label", width = 50)
        n2
      })
    }
  )

  )
)

如何更改 y 轴上的标记以显示，例如，每 25 个而不是每 50 个计数？

非常感谢！

【问题讨论】：

你试过什么。这似乎是在最近提出的问题中为您编写的代码。
是的。我试过谷歌，但正如你告诉我的那样，文档不是很好。我的猜测是我需要向 n2$yAxis 添加一些东西。我试过打勾，还有其他几个词，但没有一个是正确的。没有文档很难猜测，但无论如何我都喜欢闪亮和 rcharts。

标签： r shiny rcharts

【解决方案1】：

使用作为选项传递给yAxis的tickValues

library(rCharts)
library(shiny)
X <- data.frame(Var1 = c(1L, 2L, 3L, 4L, 5L, 6L, 7L,8L, 9L, 10L, 1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L, 1L, 2L,3L, 4L, 5L, 6L, 7L, 8L, 9L, 10L),
                Var2 = structure(c(1L,1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L,2L, 2L, 2L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L), .Label = c("control","treatment1", "treatment2"), class = "factor"),
                Freq = c(0L,0L, 3L, 2L, 6L, 9L, 13L, 36L, 50L, 497L, 0L, 2L, 1L, 3L, 6L, 4L, 11L, 29L, 50L, 499L, 1L, 2L, 0L, 2L, 5L, 6L, 12L, 22L, 63L,490L)
)
runApp(
  list(ui = fluidPage(
    titlePanel("Quiz 3 grades distribution"),

    fluidRow(
      column(3,
             #helpText("Select grade in Quiz 1 before the treatment:"),    
             selectInput("select", label = h3("Grade Quiz 1 before the treatment:"), 
                         choices = list("All" = 0, "Not Perfect" = 1, "Perfect" = 2), 
                         selected = 0)
      ),

      column(9, div(showOutput("histogram","nvd3")), style = 'align:center;')
      ,tags$head(tags$style(HTML(".nv-axislabel {font: 22px Arial;}")))
    )
  ),
  server = shinyServer(
    function(input, output, session) {
      output$histogram <- renderChart2({
        n2 <- nPlot(Freq ~ Var1, group = 'Var2', data = X, type = 'multiBarChart')
        n2$params$width <- 500
        n2$params$height <- 400
        n2$xAxis(axisLabel = "my x axis label")
        n2$yAxis(axisLabel = "my y axis label", width = 50)
        n2$yAxis(tickValues = do.call(seq, c(as.list(range(X$Freq)), 25)))
        n2
      })
    }
  )

  )
)

【讨论】：