[R] Combining data.frames

[Jeff Newmiller]

Then show your code so we can focus on what you haven't yet figured out. Have you read the examples in the merge help page?

On March 19, 2022 6:23:02 PM PDT, Jeff Reichman <reichmanj using sbcglobal.net> wrote:
>Evening Tom
>
>Yest I've been playing with the merge function.  But haven't been able to
>achieve what I need. Could maybe the way to to and it might be my syntax
>
>-----Original Message-----
>From: Tom Woolman <twoolman using ontargettek.com> 
>Sent: Saturday, March 19, 2022 8:20 PM
>To: reichmanj using sbcglobal.net
>Cc: r-help using r-project.org
>Subject: Re: [R] Combining data.frames
>
>Have you looked at the merge function in base R?
>
>https://www.rdocumentation.org/packages/base/versions/3.6.2/topics/merge
>
>
>On 2022-03-19 21:15, Jeff Reichman wrote:
>> R-Help Community
>> 
>> I'm trying to combine two data.frames which each containing 10 columns 
>> of which they each share two common fields. Here are two small test 
>> datasets.
>> 
>> df1 <- data.frame(date =
>> c("2021-1-1","2021-1-1","2021-1-1","2021-1-1","2021-1-1",
>> 
>> "2021-1-2","2021-1-2","2021-1-3","2021-1-3","2021-1-3"),
>>                   geo_hash =
>> c("abc123","abc123","abc456","abc789","abc246","abc123",
>>                                "asd123","abc789","abc890","abc123"),
>>                   ad_id =
>> c("a12345","b12345","a12345","a12345","c12345",
>>                             
>> "b12345","b12345","a12345","b12345","a12345"))
>> df2 <- data.frame(date =
>> c("2021-1-1","2021-1-1","2021-1-2","2021-1-3","2021-1-3"),
>>                   geo_hash =
>> c("abc123","abc456","abc123","abc789","abc890"),
>>                   event =
>> c("shoting","ied","protest","riot","protest"))
>> 
>> I'm trying to combine them such that I get a combined data.frames such 
>> as
>> 
>> date		geo_hash	ad_id		event
>> 1/1/2021	abc123		a12345		shoting
>> 1/1/2021	abc123		b12345
>> 1/1/2021	abc456		a12345		ied
>> 1/1/2021	abc789		a12345
>> 1/1/2021	abc246		c12345
>> 
>> Jeff
>> 
>> ______________________________________________
>> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see 
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>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
>______________________________________________
>R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
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>PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.

-- 
Sent from my phone. Please excuse my brevity.