DannyBen/datamix

# rename

Rename a column.

```ruby
require 'datamix'
using DataMix

sp500 = file '../_data/sp500.csv'

sp500.keep :date, :close
sp500.rename :close, to: :price
sp500.preview

```

# Output

```
+------------+-------------+
| date       | price       |
+------------+-------------+
| 2015-03-11 | 2040.23999  |
| 2015-03-12 | 2065.949951 |
| 2015-03-13 | 2053.399902 |
| 2015-03-16 | 2081.189941 |
| 2015-03-17 | 2074.280029 |
| 2015-03-18 | 2099.5      |
| 2015-03-19 | 2089.27002  |
| 2015-03-20 | 2108.100098 |
| 2015-03-23 | 2104.419922 |
| 2015-03-24 | 2091.5      |
+------------+-------------+
```