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 at dcn.davis.ca.us>
Sent: Saturday, March 19, 2022 8:55 PM
To: reichmanj at sbcglobal.net; Jeff Reichman <reichmanj at sbcglobal.net>; 'Tom Woolman' <twoolman at ontargettek.com>
Cc: r-help at 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 at 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 at ontargettek.com>
Sent: Saturday, March 19, 2022 8:27 PM
To: reichmanj at sbcglobal.net
Cc: r-help at 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 at ontargettek.com>
Sent: Saturday, March 19, 2022 8:20 PM
To: reichmanj at sbcglobal.net
Cc: r-help at 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