[R-SIG-Finance] na.omit.xts unsupported type error

[Joshua Ulrich]

On Mon, May 16, 2011 at 8:31 PM, Worik Stanton <worik.stanton at gmail.com> wrote:
> Dang!
>
>> Q.x[,1] <- as.numeric(Q.x[,1])
>> na.omit(Q.x[,1])
> Error in na.omit.xts(Q.x[, 1]) : unsupported type
>
> That is surprising.  Any ideas why I cannot coerce it to numeric?
>
xts / zoo objects are a matrix with an index attribute.  You can't mix
types in a matrix.

>> Z.x <- xts(as.numeric(Q.x[,1]), index(Q.x))
>> Z.x
>                   [,1]
> 1977-01-05  0.006571315
> 1977-01-06 -0.012214300
> 1977-01-10 -0.010448345
> 1977-01-12 -0.012253432
> 1977-01-17 -0.004359331
> 1977-01-19  0.001865568
>
> That works.  So I have no crises, but it is odd.
>
> W
>

Best,
--
Joshua Ulrich  |  FOSS Trading: www.fosstrading.com



> On 17/05/11 12:02, Joshua Ulrich wrote:
>>
>> On Mon, May 16, 2011 at 5:59 PM, Worik Stanton<worik.stanton at gmail.com>
>>  wrote:
>>>
>>> Friends
>>>
>>> I cannot see what I am doing wrong.
>>>
>>> I have xts
>>>
>>>> Q.x
>>>
>>>           return                 colour
>>> 1977-01-05 "0.00657131520848225"  "RED"
>>> 1977-01-06 "-0.012214299603114"   "RED"
>>> 1977-01-10 "-0.0104483453737235"  "RED"
>>> 1977-01-12 "-0.012253432045205"   "RED"
>>> 1977-01-17 "-0.00435933050375995" "RED"
>>> 1977-01-19 "0.00186556754505644"  "RED"
>>>
>>>> na.omit(Q.x)
>>>
>>> Error in na.omit.xts(Q.x) : unsupported type
>>>
>>>> class(Q.x)
>>>
>>> [1] "xts" "zoo"
>>>
>>> I know there are no NAs in Q.x, but na.omit should still work surely?
>>>
>>> cheers
>>> Worik
>>>
>> You're not doing anything wrong, but the error tells you exactly
>> what's going on.  na.omit.xts doesn't currently support character
>> vectors.
>>
>> Best,
>> --
>> Joshua Ulrich  |  FOSS Trading: www.fosstrading.com
>>
>
>