[R] how to avoid change string to number automaticlly in r

arun smartpink111 at yahoo.com
Fri Aug 15 20:27:27 CEST 2014

A similar post was found in stackoverflow (http://stackoverflow.com/questions/25328311/how-to-avoid-change-string-to-number-automaticlly-in-r), which already got an accepted reply.


On Friday, August 15, 2014 2:18 PM, Wenlan Tian <tianwenlan at gmail.com> wrote:
I was trying to save some string into a matrix, but it automatically
changed to numbers (levels). How can i avoid it??

Here is the original table:

  trt    means  M1 0   12.16673  a2 111 11.86369 ab3 125 11.74433 ab4
14  11.54073  b

I wanna to save to a matrix like:
J0001 a ab ab b

But, what i get is:
J0001 1 2 2 3

How can i avoid this?

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