R help - Sep 2010 - Accessing Vector of A Data Frame

I have a variable that looks like this:
> print(pred$posterior)
                 o            x
1     2.356964e-03 9.976430e-01
2     8.988153e-01 1.011847e-01
3     9.466137e-01 5.338627e-02
4     2.731429e-11 1.000000e+00

Now what I want to do is to access "o" and "x"

How come this approach fail?
> print(pred$posterior$o)
or
> print(pred$posterior[["o"]])
What's the right way to do it?

- G.V.

Give us more information to work with.  What does

str(pred$posterior)

show so that we can see the structure of the data.  Is it a matrix, if
so then you would do

pred$posterior[, 'o']

On Wed, Sep 29, 2010 at 10:41 PM, Gundala Viswanath <gundalav at
gmail.com> wrote:
> I have a variable that looks like this:
>
>> print(pred$posterior)
> ? ? ? ? ? ? ? ? o ? ? ? ? ? ?x
> 1 ? ? 2.356964e-03 9.976430e-01
> 2 ? ? 8.988153e-01 1.011847e-01
> 3 ? ? 9.466137e-01 5.338627e-02
> 4 ? ? 2.731429e-11 1.000000e+00
>
> Now what I want to do is to access "o" and "x"
>
> How come this approach fail?
>
>> print(pred$posterior$o)
>
> or
>
>> print(pred$posterior[["o"]])
>
> What's the right way to do it?
>
> - G.V.
>
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>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?