Read.csv使一切消极 [英] Read.csv makes everything negative

问题描述

可能重复：

R似乎将我的数据乘以-1

我有一个简单的csv文件。看起来像这样

I have a simple csv file. Looks like this

xy
1 2
1 3
2 1
2 3

x y 1 2 1 3 2 1 2 3

我在MS Excel中创建它，保存为csv等。

I created it in MS Excel, saved as csv etc.

我使用此命令读取它

ttest <-read.csv（ttest.csv，header = TRUE）

ttest<--read.csv("ttest.csv", header = TRUE)

生成的数据类似于

xy
-1 -2
-1 -3
-2 -1
-2 -3

x y -1 -2 -1 -3 -2 -1 -2 -3

我在文本编辑器中打开了原来的csv文件，它看起来像应该

I've opened the original csv file in a text editor and it looks like it should

推荐答案

原因是您的命令：

ttest<--read.csv("ttest.csv", header = TRUE)

...在< - ，并且R将此解释为负号，因此在将数据加载到 ttest 之前取消它读取的任何数字。

... has an extra dash after the <- and R is interpreting this as a negative sign, and thus negating any numbers that it reads before it loads the data into ttest.

此外， read.csv（）之间可能存在一些混淆，用于读取逗号分隔值文件和 read.table（），它将读取以下文件：

In addition, there may be some confusion between read.csv(), which is for reading comma-separated value files and read.table(), which will read files like:

x y 
1 2 
1 3 
2 1 
2 3

。 ..这是更多的我认为你的文件可能看起来像最初。

... which is rather more what I think your file might have looked like originally.

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