Question

我正在尝试在数据集中绘制几个参数。但是，当我尝试绘图时会出现无穷大错误。

看起来像应用complete.cases或制作一个新的数据帧会将range更改为-Inf和Inf。为什么是这样？如何更改它，使范围是有限的数并可以绘制？

analysis <- function(){

  #input file
  input_df<-read.csv("Book1.csv")

  dput(head(input_df))

  print(range(input_df$Forecast_Error))
  print(range(input_df$YYZ.Toronto.Observed.Temp))


  #create new data file with forecast errors

  #input2_df <- input_df[,c(10,14)]
  input2_df <- data.frame(input_df$Forecast_Error, input_df$YYZ.Toronto.Observed.Temp)

  print(range(input2_df$Forecast_Error))
  print(range(input2_df$YYZ.Toronto.Observed.Temp))


  input2_df <- input2_df[complete.cases(input2_df), ]


  print(range(input2_df$Forecast_Error))
  print(range(input2_df$YYZ.Toronto.Observed.Temp))

  write.table(input2_df,"test.txt")  

  plot(input2_df$Forecast_Error, input2_df$YYZ.Toronto.Observed.Temp, main="Toronto Observed Temp vs Forecast Error", 
       xlab="Forecast error", ylab="Toronto observed Temp", pch=19)

}

输出：

source（'PeakMissAnalysis.R'） analysis（）

structure(list(Date = c(43191.95833, 43191.91667, 43191.875, 
43191.83333, 43191.79167, 43191.75), year = c(2018L, 2018L, 2018L, 
2018L, 2018L, 2018L), month = c(4L, 4L, 4L, 4L, 4L, 4L), day = c(1L, 
1L, 1L, 1L, 1L, 1L), hour = 24:19, Forecast_Error = c(-132.55, 
-141.36, -255.57, -180.2, -461.28, -359.09), YYZ.Toronto.Observed.Temp = c(-0.2, 
-0.3, -1, -0.7, -0.4, 0.2)), row.names = c(NA, 6L), class = "data.frame")
[1] -866.75  397.00
[1] -3.4  7.1
[1]  Inf -Inf
[1]  Inf -Inf
[1]  Inf -Inf
[1]  Inf -Inf
Error in plot.window(...) : need finite 'xlim' values
In addition: There were 12 warnings (use warnings() to see them)

这是数据的屏幕截图 Screen shot of data

Answer 1

我相信这是怎么回事。当您使用

创建input2_df时

models = responses.map((response) => 
  new Model ({ id: response.userId, name: response.userName })
);

新数据框的名称为 not Forecast_Error和YYZ.Toronto.Observed.Temp，它们分别是input_df.Forecast_Error和input_df.YYZ.Toronto.Observed.Temp； data.frame函数不知道您要如何调用这些变量。会更好

 input2_df <- data.frame(input_df$Forecast_Error, input_df$YYZ.Toronto.Observed.Temp)

现在，新名称将是您所期望的。当我在最后一个range语句中对其进行测试时，此解决方案就起作用了。

WIn R中，为什么当我应用complete.cases并尝试创建一个新矩阵时，range变成“ Inf”？

1 个答案: