R help - Oct 2015 - Adding a decimal point at the second mark in R

Using R, I have two columns (onset, duration) containing milliseconds in a
data frame. I want to add a decimal point at the second mark for all data
points in both columns i.e. turning 1541ms into 1.541s AND turning 638ms
into 0.638s.

Could someone tell me how to do this? 

Thanks
Jon



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On 03/10/15 05:26, Jon1985 wrote:
> Using R, I have two columns (onset, duration) containing milliseconds in a
> data frame. I want to add a decimal point at the second mark for all data
> points in both columns i.e. turning 1541ms into 1.541s AND turning 638ms
> into 0.638s.
>
> Could someone tell me how to do this?
How about

    X$onset    <- X$onset/1000
    X$duration <- X$duration/1000

???

cheers,

Rolf Turner

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