...
> mydf[2] # ???
B
1 4
2 5
3 6
A data frame is "really" a list of columns, so giving a single value
returns that column.
False. It returns a data frame consisting of a single column = a list
containing a single component.
mydf[[2]]
returns a single component/column.
While these differ
On Tue, Jan 26, 2016 at 4:24 PM, Robert Sherry wrote:
>
> Thank you for the response. As expected, the following expression worked:
> df[order(df$x),]
This says to sort the rows, and leave the columns alone.
Subsetting a 2-dimensional object is via
[rows, columns]
> I would expect the follo
Thank you for the response. As expected, the following expression worked:
df[order(df$x),]
I would expect the following expression to work also:
df[order(df$x)]
However it does not. That is, the comma is needed. Please tell me why
the comma is there.
Thanks
Bob
On 1/26/2016 8:19 A
> On 23.01.2016 01:21, Robert Sherry wrote:
> > In R, I run the following commands:
> > df = data.frame( x=runif(10), y=runif(10) )
> > df2 = df[order(x),]
>
>
> You use another x from your workspace, you actually want to
>
>
> df2 = df[order(df[,"x"]),]
or
df[order(df$x),]
And
On 23.01.2016 01:21, Robert Sherry wrote:
In R, I run the following commands:
df = data.frame( x=runif(10), y=runif(10) )
df2 = df[order(x),]
You use another x from your workspace, you actually want to
df2 = df[order(df[,"x"]),]
Best,
Uwe Ligges
The first, as I would expect
Spring 0.1927715
> #16 Spring 0.1927715
>
> The process you describe does not get me there
>
> Any other recommendations?
>
> -Original Message-
> From: arun [mailto:smartpink...@yahoo.com]
> Sent: Thursday, October 11, 2012 10:33 AM
> To: ROLL Josh F
> Cc: R help
>
ly, the Obs column has only 4 values. Do you want to
get the means???
A.K.
- Original Message -
From: ROLL Josh F
To: 'arun'
Cc: R help
Sent: Thursday, October 11, 2012 1:42 PM
Subject: RE: [R] Sorting a data frame by specifying a vector
Sorry if I wasn't clear but th
Winter 0.9318599
> #10 Winter 0.9318599
> #14 Winter 0.9318599
> #4 Spring 0.1927715
> #8 Spring 0.1927715
> #12 Spring 0.1927715
> #16 Spring 0.1927715
>
> Any other thoughts?
>
> JR
>
>
> -Original Message-
> From: Bert Gunter [mailto:gunter.ber
tober 11, 2012 10:33 AM
To: ROLL Josh F
Cc: R help
Subject: Re: [R] Sorting a data frame by specifying a vector
Hi,
In your dataset, it seems like it is already ordered in the way you wanted to.
df.. <- data.frame(Season=rep(c("Summer","Fall","Winter","Spring&
Hi,
In your dataset, it seems like it is already ordered in the way you wanted to.
df.. <- data.frame(Season=rep(c("Summer","Fall","Winter","Spring"),4),Obs=
runif(length(rep(c("Summer","Fall","Winter","Spring"),4
#Suppose the order you want is:
vec2<-c("Summer","Winter","Fall","Spring")
df1
?order
df[order(yourcolumn, ]
-- Bert
On Thu, Oct 11, 2012 at 10:08 AM, LCOG1 wrote:
> Hello all,
>I cannot seem to figure out this seemingly simple procedure.
>
> I want to sort a data frame by a specified character vector.
>
> So for :
>
> df.. <- data.frame(Season=rep(c("Summer","Fall","
-help@r-project.org
Sent: Tue, June 7, 2011 10:05:37 AM
Subject: Re: [R] Sorting a data frame with values of different lengths
Also, I tried changing a line to store W as numeric:
sample_info<-c(pds_gagehandles[i],p,as.numeric(sample_W))
But it is still sorting incorrectly:
> W_table[order(W
Thanks for catching that, Sarah.
It seems like the problem was that I was using the c() function to combine
terms (including W) that I was adding to a data frame.
This caused R to convert the numeric W to a character string.
I fixed this by using data.frame() and then rbind() instead of c() and
Hi,
On Tue, Jun 7, 2011 at 10:01 AM, William Armstrong
wrote:
> Hi Sarah,
>
> str(W_table) gives me:
>
>> str(W_table)
> 'data.frame': 11 obs. of 3 variables:
> $ pds_gagehandles.i.: Factor w/ 1 level "mibe": 1 1 1 1 1 1 1 1 1 1 ...
> $ p : chr "1" "2" "3" "4" ...
> $ W
Also, I tried changing a line to store W as numeric:
sample_info<-c(pds_gagehandles[i],p,as.numeric(sample_W))
But it is still sorting incorrectly:
> W_table[order(W_table$as.numeric.W.),]
pds_gagehandles.i. p as.numeric.W.
8mibe 81004.5
1mibe 1
Hi Sarah,
str(W_table) gives me:
> str(W_table)
'data.frame': 11 obs. of 3 variables:
$ pds_gagehandles.i.: Factor w/ 1 level "mibe": 1 1 1 1 1 1 1 1 1 1 ...
$ p : chr "1" "2" "3" "4" ...
$ W : chr "746" "870.5" "767" "1066" ...
here is the script I am usi
Hi,
It looks to me that your data frame is being sorted as text.
What does
str(W_table)
show?
How was W_table created? Your W column appears to not be numeric.
Sarah
On Tue, Jun 7, 2011 at 9:51 AM, William Armstrong
wrote:
> Hi all,
>
> I am attempting to run a script in which I permute my da
To sort a character vector in a desired order
you can convert it to a factor with the levels
in the desired order. To sort strings like "2"
and "11" in numerical order, use convert them
to numbers with as.numeric. To sort by two variables,
using the second to break ties in the first,
use data[ord
On Feb 3, 2011, at 10:12 AM, Alastair wrote:
Hi,
I'm trying to present a table of some experimental data, and I want
to order
the rows by the instance names. The issue I've got is that there are a
variety of conventions for the instance names (e.g. competition01,
competition13, small_1, bi
Dear Michael,
Is this what you are looking for?
ex.dat$rn=as.numeric(rownames(ex.dat))
ex.dat
# Are new3 and ex.dat equals?
all.equal(new3,ex.dat)
[1] TRUE
HTH,
Jorge
On Tue, Jul 8, 2008 at 10:58 PM, Michael Rennie <[EMAIL PROTECTED]> wrote:
> Hi there,
>
> I'm sure there's an easy answer to
Can't you just do
newdat <- newdat[order(row.names(newdat)),]
Or am I missing something?
cheers,
Rolf Turner
On 9/07/2008, at 2:58 PM, Michael Rennie wrote:
Hi there,
I'm sure there's an easy answer to this, and I can't wait to see it.
The question: is the
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