为什么ggplot不能在R中绘制多个窗口？ [英] Why is ggplot not plotting multiple windows in R?

问题描述

我遇到了一些我写的R函数的问题。我有2个绘图函数，我想写一个函数为两个函数创建图。这个函数看起来像这样

  plotBoth = function（path = NULL）{
 plotPopulationStats（path）
 plotInstructionFrequencies（path）
} 
  

然而，只有我称之为第二个的指令才会被绘制，第一条指令只绘制一个空白窗口。下面是这些函数的简化版本。

  plotInstructionFrequencies = function（path = NULL）{
 quartz（）
 table<  -  read.table（path，header = TRUE）; 
 frame<  -  as.data.frame（table）; 
 frame $ time = seq（1，length（table $ noop））; 
 frame $ mean = NULL 
 frame $ sd = NULL 
 frame $ variance = NULL 
 Molten<  -  melt（frame，id.vars =time）; 
 ggplot（Molten，aes（x = time，y = value，color = variable））+ geom_line（）
} 
  

和

  plotPopulationStats =函数（path = NULL）{
 quartz （）
 table<  -  read.table（path，header = TRUE）; 
 frame<  -  as.data.frame（table）; 
 frame $ time = seq（1，length（table $ noop））; 
 frame $ noop = NULL 
 frame $ plus = NULL 
 ... 
 frame $ store = NULL 
 Molten<  -  melt（frame，id.vars = 时间）; 
 ggplot（Molten，aes（x = time，y = value，color = variable））+ geom_line（）; 
} 
  

所有函数都在单独的文件中，但我希望它们全部在一个文件中。

这两个函数在单独调用时都可以很好地显示出来。

解决方案

阅读常见问题7.22：
http://cran.r-project.org/doc/FAQ/R-FAQ.html#您需要打印（）您的ggplot或格子图。

（$）

$ b $ p $

I am having a problem with a couple R functions I wrote. I have 2 plotting functions and I want to write a function that creates plots for both of the functions. This function looks like this

 plotBoth = function(path = NULL){
     plotPopulationStats(path)
     plotInstructionFrequencies(path)
 }

However only whichever instruction I call second gets plotted, while the first instruction only plots a blank window. Below are simplified versions of these functions.

 plotInstructionFrequencies = function(path = NULL){
   quartz()
   table <- read.table(path, header=TRUE);
   frame <- as.data.frame(table);
   frame$time = seq(1, length(table$noop));
   frame$mean = NULL
   frame$sd = NULL
   frame$variance = NULL
   Molten <- melt(frame, id.vars = "time");
   ggplot(Molten, aes(x = time, y = value, colour = variable)) + geom_line()
}

and

plotPopulationStats = function(path = NULL){
    quartz()
    table <- read.table(path, header=TRUE);
    frame <- as.data.frame(table);
    frame$time = seq(1, length(table$noop));
    frame$noop = NULL
    frame$plus = NULL
        ...
    frame$store = NULL
        Molten <- melt(frame, id.vars = "time");
    ggplot(Molten, aes(x = time, y = value, colour = variable)) + geom_line();
}

All the functions are in separate files, but I would like to have them all in one file.

Both functions plot fine when called individually.

解决方案

Read Faq 7.22: http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-do-lattice_002ftrellis-graphics-not-work_003f

You need to print() your ggplot or lattice plots.

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