[R] How to add no data entries into current dataframe?

[Jeff Newmiller]

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On March 24, 2016 10:09:46 PM PDT, Hiroyuki Sato <hiroysato at gmail.com> wrote:
>Hello Ulrik
>
>Thank you for replying.
>
>The real data has many IDs( about 3,000 IDS). So I want to find missing
>values with function or something.
>If 104 not in s, then add 104 value with all column zero.
>
>And also real data has many columns( 80 ~ 5,000, columns. it is not
>fixed
>length ).
>So I would like to add values with function or something too
>
>ex) I can't write following statement.
>data.frame(ID = c(104, 105), PDT1 = 0, PDT2  = 0, PDT3 = 0, ... PDT5000
>=
>0)
>
>Do you have any good idea?
>
>Regards.
>
>
>
>
>2016年3月25日(金) 13:58 Ulrik Stervbo <ulrik.stervbo at gmail.com>:
>
>> Hi Hiroyuki,
>>
>> The row bind function rbind() is what you need
>>
>> s <- dcast(s,ID ~ CODE, value.var="VAR",sum)
>> df2 <- data.frame(ID = c(104, 105), PDT1 = 0, PDT2  = 0, PDT3 = 0)
>> rbind(s, df2)
>>
>> hope this helps
>> Ulrik
>>
>> On Fri, 25 Mar 2016 at 05:52 Hiroyuki Sato <hiroysato at gmail.com>
>wrote:
>>
>>> Hello members
>>>
>>> Question
>>>
>>> Could you tell me how to add ID 100, 104, 105 values with zero?
>>>
>>> 1, Source data
>>>
>>>
>>> ID 100, 104 and 105 has no values.
>>>
>>>
>>> > s
>>> ID DATE VAR CODE
>>> 1 101 20160301 1 PDT1
>>> 2 102 20160301 1 PDT2
>>> 3 103 20160301 1 PDT3
>>> 4 103 20160302 1 PDT3
>>>
>>> s <- structure(list(ID = c(101L, 102L, 103L, 103L), DATE =
>c(20160301L,
>>> 20160301L, 20160301L, 20160302L), VAR = c(1L, 1L, 1L, 1L), CODE =
>>> structure(c(1L,
>>> 2L, 3L, 3L), .Label = c("PDT1", "PDT2", "PDT3"), class = "factor")),
>>> .Names
>>> = c("ID",
>>> "DATE", "VAR", "CODE"), class = "data.frame", row.names = c(NA,
>>> -4L))
>>>
>>> src <- 100:106
>>>
>>>
>>> 2, Expect output
>>>
>>> ID PDT1 PDT2 PDT3
>>> 1 100 0 0 0
>>> 2 101 1 0 0
>>> 3 102 0 1 0
>>> 4 103 0 0 2
>>> 5 104 0 0 0
>>> 6 105 0 0 0
>>>
>>> 3, Convert process.
>>>
>>> I can convert data "s" like following.
>>>
>>> > library(reshape2)
>>> > dcast(s,ID ~ CODE, value.var="VAR",sum)
>>> ID PDT1 PDT2 PDT3
>>> 1 101 1 0 0
>>> 2 102 0 1 0
>>> 3 103 0 0 2
>>>
>>> Could you tell me how to add 100, 104, 105 values into convert
>results?
>>>
>>>
>>> Regards.
>>>
>>>         [[alternative HTML version deleted]]
>>>
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>>
>
>	[[alternative HTML version deleted]]
>
>______________________________________________
>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
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