I am looking to order my columns by name. I know that I can do the following: `portManDMA = portManDMA[,c(1,2,6,7,8,9,10,3,4,5,11,12,13,14,15,16,17,18,19)]` to reorder the columns, but what I would like to do is actually use the column name in the ordering. For example:

```
## OriginalMatrix  
DEF ABC KLM  HIJ

```

Where each 3 letters represent a column name. I would like then reorder them based on the columns names, something like `portManDMA = portManDMA[,c("ABC","KLM","DEF","HIJ")]`, for example, so that the new ordering would then be: 

```
## NewMatrix  
ABC KLM DEF HIJ  

```

Would anyone be able to help me with this?