Question

可能重复：
R interpreting variable in data frame as factor; it isn’t

我在使用R编写的一些代码时遇到了问题，我认为我的问题源于对R中因素的理解不足。

我想要做什么：我有一个列号，我想创建另一列bin描述（例如1,2,3等对应bin1，bin2等。）

以下是代码：

## import data to data frame
rawData = read.table("Data.csv", sep = ",", header = TRUE)

## reduce socre into bins
rawData["s10_BIN"] = NA
for(i in 1:length(rawData[,"foo"]))
    {
        if(rawData[i,"s10"] > 0 && rawData[i,"s10"] <= .5)
        {
            rawData[i,"s10_BIN"] = 1
        }
        else if(rawData[i,"s10"] > .5 && rawData[i,"s10"] <= 1)
        {
            rawdata[i,"s10_BIN"] = 2
        }
        else if(rawData[i,"s10"] > 1 && rawData[i,"s10"] <= 1.5)
        {
            rawData[i,"s10_BIN"] = 3
        }
        else if(rawData[i,"s10"] > 1.5 && rawData[i,"s10"] <= 2)
        {
            rawData[i,"s10_BIN_BIN"] = 4
        }
        else
            rawData[i,"s10_BIN"] = 0

    }

我一直收到错误

1: In Ops.factor(rawData[i, "s10"], 0) : > not meaningful for factors
2: In Ops.factor(rawData[i, "s10"], 0.5) :
  <= not meaningful for factors

有人可以让我了解我所缺少的内容吗？谢谢！

编辑：以下是数据的前两行：

 rawData[1:2,]
        ID PRODUCT  GROUP     MARKET   s10  CLAIMS   NUM_CLAIMS   s10_BIN
1        1    foo     A        C       NULL    -5          2         NA
2        2    foo     A        D      1.064     1          1         NA

我觉得问题可能是NULL值...

为什么数值存储为R中的因子？

0 个答案: