[R] jagged array
Tolga Uzuner
tolga at coubros.com
Sun Jul 3 11:38:15 CEST 2005
Spencer Graves wrote:
> Access list items using "[[". "res[1]" is a list with only one
> attribute. "res[1][1]" is the same list with only one attributre.
> "res[[1]]" is the first attribute of that list, so res[[1]][1] in your
> example should be 3.125.
>
> spencer graves
>
> Tolga Uzuner wrote:
>
>> Berton Gunter wrote:
>>
>>
>>> Please read "An Introduction to R" and the help file for "[", where
>>> this is
>>> explained. If you want to use R, you need to expend effort to learn it.
>>>
>>> -- Bert Gunter
>>> -----Original Message-----
>>> From: r-help-bounces at stat.math.ethz.ch
>>> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Tolga Uzuner
>>> Sent: Saturday, July 02, 2005 4:41 PM
>>> To: r-help at stat.math.ethz.ch
>>> Subject: [R] jagged array
>>>
>>> Hi,
>>>
>>> I have a "jagged array" which looks like this:
>>>
>>>
>>>> res
>>>
>>>
>>> ...
>>> [[996]]
>>> [1] 1.375 3.375 4.125 4.625 4.875 4.875 6.625 7.125 8.875
>>>
>>> [[997]]
>>> [1] 1.875 5.125 6.875 7.875 9.875
>>>
>>> [[998]]
>>> [1] 1.875 5.375 6.625 6.875 8.125 9.375 9.625
>>>
>>> [[999]]
>>> [1] 1.875 6.875 9.875
>>>
>>> [[1000]]
>>> [1] 1.875 6.125 6.875 9.375 9.625
>>>
>>>
>>> Now, I want to use the first row,so I say res[1]
>>>
>>>
>>>> res[1]
>>>
>>>
>>> [[1]]
>>> [1] 3.125 4.375 4.625 5.125 5.375 6.375 6.875 7.875 9.125 9.125
>>> 9.375 9.375
>>>
>>> How do I access, an element within this ? I try
>>>
>>>
>>>> res[1][1]
>>>
>>>
>>> [[1]]
>>> [1] 3.125 4.375 4.625 5.125 5.375 6.375 6.875 7.875 9.125 9.125
>>> 9.375 9.375
>>>
>>> which returns the same vector.. ??? How do I "get to" 3.125 ?
>>>
>>> Thanks
>>>
>>> ______________________________________________
>>> R-help at stat.math.ethz.ch mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide!
>>> http://www.R-project.org/posting-guide.html
>>>
>>>
>>>
>>>
>>>
>>
>> tx
>>
>> ______________________________________________
>> R-help at stat.math.ethz.ch mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide!
>> http://www.R-project.org/posting-guide.html
>
>
Many thanks, Tolga
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