Displaying 20 results from an estimated 10000 matches similar to: "Merge dataframes with no shared rows, some shared and som e unshared columns"
2006 Jul 21
1
Merge two dataframes of different column length and row length by two columns at a time
Hello,
I have two dataframes of the following structures:
str(a)
`data.frame': 1354896 obs. of 14 variables:
$ V1 : int 0 1 2 3 4 5 6 7 8 9 ...
$ V2 : int 0 0 0 0 0 0 0 0 0 0 ...
$ V3 : int 74 12305 103 12337 46 57 12446 90 12097 79 ...
$ V4 : num 11.8 1529.2 17.8 1579.4 6.7 ...
$ V5 : int 88 11040 104 11557 56 58 11040 74 10991 81 ...
$ V6 : num 15.5 1921.3 20.3
2005 Oct 18
0
[Bug 3186] New: Surprisingly large unshared memory usage
https://bugzilla.samba.org/show_bug.cgi?id=3186
Summary: Surprisingly large unshared memory usage
Product: rsync
Version: 2.6.7
Platform: x86
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P3
Component: core
AssignedTo: wayned@samba.org
ReportedBy:
2009 Feb 04
1
Out of Office: Out of Office: Out of Office: Ou t of Office: Ou t of Office: Ou t of Office: Ou t of Office: Ou t of Office: Ou t of Office: Ou t of Office: Re : som e kind of t i meou t problem in pbx _sp ool.c
Me encuentro de vacaciones hasta el proximo 16/02.
Por favor contactar a Pablo Minsteras (pablo.minsteras at utopixnetworks.com) o Gustavo Hernandez (gustavo.hernandez at utopixnetworks.com).
Muchas Gracias,
Gustavo Scheveloff
2011 May 04
1
merging multiple columns from two dataframes
Hello,
I have data in a dataframe with 139104 rows which is multiple of 96x1449. i
have a phenotype file which contains the phenotype information for the 96
samples. the snp name is repeated 1449X96 samples. I haveto merge the two
dataframes based on sid and sen. this is how my two dataframes look like
dat<-data.frame(snpname=rep(letters[1:12],12),sid=rep(1:12,each=12),
2012 Mar 16
1
R merge two dataframes with different row?
Hi everyone,
I have a question for R code to merge.
Say I have two dataframes:
File1 is:
V1 V2 V3 V4
1 100 101 name1
2 200 201 name2
2 300 301 name3
3 400 401 name4
3 500 501 name5
4 600 601 name6
4 700 701 name7
File2 is:
V1 V2 V3 V4
1 50 55 p1
3 402 449 p2
4 550 650 p3
4 651 660
2009 Dec 07
2
How to apply five lines of code to ten dataframes?
Hello R-helpers,
I have 10 dataframes (named data1, data2, ... data10) and I would like to
add 5 new columns to each dataframe using the following code:
data1$LogDepth<-log10(data1[,2]/data1[,4])
data1$LogArea<-log10(data1[,3]/data1[,5])
data1$p<-2*data1[,6]/data1[,7]
data1$Exp<-data1[,2]^(2/data1[,8])
data1$s<-data1[,3]/data1[,9]
...but I would prefer not to repeat this chunk of
2013 Feb 26
2
merging or joining 2 dataframes: merge, rbind.fill, etc.?
#I want to "merge" or "join" 2 dataframes (df1 & df2) into a 3rd
(mydf). I want the 3rd dataframe to contain 1 row for each row in df1
& df2, and all the columns in both df1 & df2. The solution should
"work" even if the 2 dataframes are identical, and even if the 2
dataframes do not have the same column names. The rbind.fill function
seems to work. For
2012 Nov 15
3
merge dataframes with condition
Hi @ all,
I wamnt to combine two dataframes including a condition.
I have two dataframes like the following:
animal<-c("bear","bear","lion","monkey","fish","monkey","bear","zebra","zebra")
val<-c(2,42,67,5,12,9,87,1,12)
2012 Sep 24
2
Rows not common in dataframes
Hi,
I have two dataframes (Dataframe_A, Dataframe_B) with the same no. of
columns. The first column of both the dataframes contains unique names.
I wish to have Dataframe_A with the rows that are NOT common to
Dataframe_B.
With merge (), it is possible to get the common rows or to merge rows, but
I am not quite sure how to do it in a simpler way. Any help would be much
appreciated.
Thank you.
2006 Nov 08
2
combining dataframes with different numbers of columns
Dear list members,
I have to combine dataframes together. However they contain different
numbers of variables. It is possible that all the variables in the
dataframe with fewer variables are contained in the dataframe with
more variables, though it is not always the case.
There are key variables identifying observations. These could be used
in a merge statement, although this won't
2009 Mar 23
1
Merging rows in dataframes
Hello,
I have a dataframe with 40 columns and around 450,000 rows. The first
column in each row is a factor id and the remaining are numeric. Some
rows have the same ids. What I want to do is to merge each set of rows
sharing the same ids (id set) into one single row (summarizing row)
with that id. To create the summarizing row, I'd like to apply a
different function on each of the
2014 Aug 10
1
"Fastest" way to merge 300+ .5MB dataframes?
Good afternoon,
Today I was working on a practice problem. It was simple, and perhaps
even realistic. It looked like this:
? Get a list of all the data files in a directory
? Load each file into a dataframe
? Merge them into a single data frame
Because all of the columns were the same, the simplest solution in my
mind was to `Reduce' the vector of dataframes with a call to
`merge'. That
2009 Jul 15
1
Averaging dataframes that are stored in a list
Dear R-helpers,
I have a list containing 5000 elements, each element is a dataframe
containing one ID column (identical over the 5000 dataframes) and 9 numeric
variables, e.g.
ID VAR1 VAR2 VAR3 ... VAR9
I would like to create a new dataframe containing the ID column and the mean
values of the 9 numeric variables. So, the structure of this new dataframe
would be identical to the structure of the
2008 Dec 15
2
how to merge list of dataframes?
Dear all:
I have a list of dataframes like this, i try to merge this lists of dataframes into one single dataframe, and keep ther column names as usual, how can i do this?
i try lapply(aa,rbind), but it dose not work.
Best regard!
> summary(aa)
Length Class Mode
[1,] 3 data.frame list
[2,] 3 data.frame list
[3,] 3 data.frame list
[4,] 3 data.frame
2006 Nov 22
1
how to merge these dataframes
Hi,
Having 3 dataframes with different row numbers, but equal column names
(see below) I want to merge them by Var1 so I've tried:
merge(j1,j2,j3,by="Var1")
merge(j,j1,j2,by=names("Var1"))
But always got the same message:
Erro en fix.by(by.x, x) : 'by' must specify column(s) as numbers, names
or logical
What I'm doing wrong?
Thanks,
Antonio
j1
2005 Nov 22
7
[Bug 3186] Surprisingly large unshared memory usage
https://bugzilla.samba.org/show_bug.cgi?id=3186
------- Comment #1 from foner-rsync-bugzilla@media.mit.edu 2005-11-22 14:16 MST -------
Any ideas on this? It's been open 5 weeks and probably got overlooked... Tnx!
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2011 May 04
1
adding columns to dataframes contained in a list
hi there,
I have a list of 5 identical dataframes:
mydf <- data.frame(x=c(1:5), y=c(21:25))
mylist <- rep(list(mydf),5)
and a factor variable with 5 levels:
foo <- c(letters[1:5])
foo <- as.factor(foo)
Question:
I'd like to add a new variable to each dataframe in the list, each
containing only one level of the factor variable. So mylist[[1]]
should have a new variable z
2011 Oct 07
2
Merge dataframes
Hello,
I am having some problems to use the 'merge' function. I'm not sure if I got
its working right.
What I want to do is:
1) Suppose I have a dataframe like:
height width
1 1.1 2.3
2 2.1 2.5
3 1.8 1.9
4 1.6 2.1
5 1.8 2.4
2) And I generate a second
2004 Aug 15
3
Stacking Vectors/Dataframes
Hello,
Is there a simple way of stacking/merging two dataframes in R? I want to
stack them piece-wise, not simply add one whole dataframe to the bottom of
the other. I want to create as follows:
x.frame:
aX1 bX1 cX1 ... zX1
aX2 bX2 cX2 ... zX2
... ... ... ... ...
aX99 bX99 cX99 ... zX99
y.frame:
aY1 bY1 cY1 ... zY1
aY2 bY2 cY2 ... zY2
... ... ... ... ...
aY99 bY99 cY99 ...
2010 Dec 16
2
Compare two dataframes
Hello,
I have two dataframes DF1 and DF2 that should be identical but are not
(DF1 has some rows that aren't in DF2, and vice versa). I would like
to produce a new dataframe DF3 containing rows in DF1 that aren't in
DF2 (and similarly DF4 would contain rows in DF2 that aren't in DF1).
I have a solution for this problem (see self contained example below)
but it's awkward and