[R] Combining data.frames

[Jeff Reichman]

Ok this seems to work correctly

df1 <- data.frame(date = as.factor(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",
                           "2021-1-4")),
                  geo_hash = as.factor(c("abc123","abc123","abc456","abc789","abc246","abc123",
                               "asd123","abc789","abc890","abc123","z12345")),
                  ad_id = as.factor(c("a12345","b12345","a12345","a12345","c12345",
                            "b12345","b12345","a12345","b12345","a12345","a12345")))
df2 <- data.frame(date = as.factor(c("2021-1-1","2021-1-1","2021-1-2","2021-1-3","2021-1-3","2021-1-4")),
                  geo_hash = as.factor(c("abc123","abc456","abc123","abc789","abc890","w12345")),
                  event = as.factor(c("shoting","ied","protest","riot","protest","killing")))

df1
df2

#df3 <- merge(df1, df2, all = TRUE)
df3 <- merge(df1, df2, by = c("date", "geo_hash" ), all = TRUE)
df3

-----Original Message-----
From: Jeff Newmiller <jdnewmil using dcn.davis.ca.us> 
Sent: Saturday, March 19, 2022 8:55 PM
To: reichmanj using sbcglobal.net; Jeff Reichman <reichmanj using sbcglobal.net>; 'Tom Woolman' <twoolman using ontargettek.com>
Cc: r-help using r-project.org
Subject: Re: [R] Combining data.frames

by = c("date", "geo_hash" )

On March 19, 2022 6:31:19 PM PDT, Jeff Reichman <reichmanj using sbcglobal.net> wrote:
>Yes I'm reading that presently
>
>The closest I've gotten has been
>
>df3 <- merge(df1, df2, all = TRUE)
>
>-----Original Message-----
>From: Tom Woolman <twoolman using ontargettek.com>
>Sent: Saturday, March 19, 2022 8:27 PM
>To: reichmanj using sbcglobal.net
>Cc: r-help using r-project.org
>Subject: Re: [R] Combining data.frames
>
>You can also do "SQL-like" joins in the tidyverse with dplyr.
>
>
>On 2022-03-19 21:23, Jeff Reichman 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/me
>> r
>> ge
>> 
>> 
>> 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 
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> 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 
>https://stat.ethz.ch/mailman/listinfo/r-help
>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.