MattNapsAlot/bigDataFrame — Issue #15: accessor doesn't work correctly for a single column data frame
Author: MattNapsAlot
Created: 2011-12-30 19:27:25+00:00
State: open

This is what you get:

```R
> dd <- data.frame(aColName = c("one", "two", "one", "three", "one"))
> x <- BigDataFrame(data=dd)
> x[,1]
aColName
1 one
2 two
3 one
4 three
5 one
```

But it should be like this:

```R
> dd[,1]
[1] one two one three one
Levels: one three two

```