Displaying 20 results from an estimated 9000 matches similar to: "Problem with strptime"
2014 Apr 10
3
Unión de subconjuntos procedentes de bucles
Buenas tardes a todos los participantes del foro.
Me dirijo a vosotros porque estoy atascado con una duda de programación respecto al data frame:
> dd # Data frame de 5 variables, leído de un archivo txt
id sexo nacim origen final
1 1 0 02/09/1955 01/04/1985 01/02/2014
2 2 1 29/10/1951 15/08/1996 01/05/2009
3 3 0 30/10/1942 02/08/2000 01/02/2014
4 4 1
2011 Nov 16
3
plotting a double y axis when x and y lengths differ
Hello All,
Many thanks to the help I have received so far.
Here is an example data set I hope to plot
Data1
Year Data SE
1 2005 2 0.01
2 2006 4 0.01
3 2007 5 0.01
4 2008 2 0.01
5 2009 3 0.01
6 2010 6 0.01
Data2
Year Data SE
1 2006 32 1
2 2007 100 2
3 2008 60 4
4 2009 67 3
5 2010 8 1
Notice Data2 has one less years worth of data than Data1 (which is my
2013 Jun 10
4
Combining CSV data
Hello R community,
I am trying to combine two CSV files that look like this:
File A
Row_ID_CR, Data1, Data2, Data3
1, aa, bb, cc
2, dd, ee, ff
File B
Row_ID_N, Src_Row_ID, DataN1
1a, 1, This is comment 1
2a, 1, This is comment 2
3a,
2010 Sep 06
1
combining collumns for data.frames
Hi
This question is far less simple than the title suggests, please read carefully, thanks.
I have 2 sets of data, both read into R
>data1<-read.table ("1.txt", header=T, sep="\t")
>data2<-read.table ("2.txt", header=T, sep="\t")
>data1
Taxon stage1 stage2 stage3 stage4
T1 0 0 1 1
T2 0
2008 May 14
4
Accessing items in a list of lists
Using R 2.6.2, say I have the following list of lists, "comb":
data1 <- list(a = 1, b = 2, c = 3)
data2 <- list(a = 4, b = 5, c = 6)
data3 <- list(a = 3, b = 6, c = 9)
comb <- list(data1 = data1, data2 = data2, data3 = data3)
So that all names for the lowest level list are common. How can I most
efficiently access all of the sublist items "a" indexed by the outer
2009 Nov 13
2
why the same values cannot be judged to be the same in R
Hi Rusers,
I found sometimes that the same values cannot be judged to be the same in
R. Anybody knows the probelm? I think i ignored some minor detail. Thanks.
Here is the example.
############
data1<-matrix(data=c(1,1.2,1.3,"3/23/2004",1,1.5,2.3,"3/22/2004",2,0.2,3.3,"4/23/2004",3,1.5,1.3,"5/22/2004"),nrow=4,ncol=4,byrow=TRUE)
2009 Nov 06
1
probem on merge data
Hi there,
data1<-matrix(data=c(1,1.2,1.3,"3/23/2004",1,1.5,2.3,"3/22/2004",2,0.2,3.3,"4/23/2004",3,1.5,1.3,"5/22/2004"),nrow=4,ncol=4,byrow=TRUE)
data1<-data.frame(data1)
names(data1)<-c("areaid","x","y","date")
data1
areaid x y date
1 1 1.2 1.3 3/23/2004
2 1 1.5 2.3 3/22/2004
3 2
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
2003 Apr 10
6
How to plot several graphs in a single 2-D figure?
Hi, R-listers
I tried to plot several graphs in a sigle x-y coordinate settings, like the
following:
|(y) s
| ****** s
| ***** s
| sssssssssssssssssss
|_______________________________(x)
where "*" and "s" denote two diffrent plots.
However, when I used
plot(data1); % data1 is the data points of "*"
2006 May 30
3
Faster way to zero-pad a data frame...?
Hello List,
I am working on creating periodograms from IP network traffic logs using the Fast Fourier Transform. The FFT requires all the data points to be evenly-spaced in the time domain (constant delta-T), so I have a step where I zero-pad the data.
Lately I've been wondering if there is a faster way to do this. Here's what I've got:
* data1 is a data frame consisting of
2010 May 28
1
Match 2 vectors
Hi,
I have 2 dataframes of unequal length, and I would like to match a
factor to them so that both dataframes will have the same number of
rows.
example:
# create the 2 dataframes with unequal length
data1 <- data.frame(letters, 1:26)[-c(5,10,19:21),]
data2 <- data.frame(letters, 1:26)[-c(6,9,15:18),]
data2a <- match(data1[,1], data2[,1])
data2b <- data2[data2a,]
When I match
2012 Dec 14
2
Manipulation of longitudinal data by row
I have a dataset of the form below, consisting of one unique ID per
row, followed by a series of visit dates. At each visit there are
values for 3 dichotomous variables. Of the 8 different possible
combinations of the three variables, 4 are "abnormal" and the
remaining 4 are "normal". Everyone starts out abnormal, and then
either continues to be abnormal at subsequent visits,
2008 Aug 21
1
problem merging two data sets ( one with a header and one without)
I have two set of data, Data1 and Data2 . Data1 has a header and Data2 does
not. I would like to merge the two data sets after removing some columns
from data2 .
I am having a problem merging so I had to write and read final data and
specify the ?header=F? so the merge can be done by?V1?. Is there a way to
avoid this step. The problem is when I do cbind the FinalData has different
column names
2005 Feb 16
5
scaling axes when plotting multiple data sets
1) When adding additional data sets to a plot using "plot" followed by "lines",
is there a way to automate the scaling of the axes to allow for all data sets
to fit within the plot area?
2) I attempted to solve this by setting
xlim=c(min(c(data1,data2,data3)),max(c(data1,data2,data3)))
however, there are some NAs and Infs in these data sets, and min(data1) and
max(data1) both
2010 Dec 07
4
Creating binary variable depending on strings of two dataframes
Hi,
consider the following two dataframes:
x1=c("232","3454","3455","342","13")
x2=c("1","1","1","0","0")
data1=data.frame(x1,x2)
y1=c("232","232","3454","3454","3455","342","13","13","13","13")
2009 May 24
2
Assigning variable names from one object to another object
Hello
I have 2 datasets say Data1 and Data2 both are of different dimesions.
Data1:
120 rows and 6 columns (Varname, Vartype, Labels, Description, ....)
The column Varname has 120 rows which has variable names such id, age,
gender,.....so on
Data2:
12528 rows and 120 columns
The column names in this case are V1, V2, ......... V120 (which are default
names in R when we say head=F in read.csv)
2009 Sep 03
5
abind, but on lists?
I'm trying to massage some data from Matlab into R. The matlab file
has a "struct array" which when imported into R using the R.matlab
package, becomes an R list with 3+ dimensions, the first of which
corresponds to the structure fields, with corresponding row names, and
the second and third+ dimensions correspond to the dimensions of the
original struct array (as matlab
2019 Mar 28
2
NFSv4: Using fsid=0 but *not* exporting the root filesystem
Hi,
I would like to use the NFSv4 ability to create a "root" filesystem with
fsid=0, so that I don't have to refer to the whole path of the exported
filesystem when I mount it. However I do *not* want this root
filesystem to be mountable by any host. Is that possible and how?
E.g
Filesystem:
/exports/data1
/exports/data2
/exports/data3
/etc/exports:
/exports
2002 Dec 05
1
Passing options as lists
Hi,
I apologize if this has previously been posted. I've just subscribed to the
R-help digest.
I'm writing a plotting function that uses layout() to plot several different
plots on the same device. This function uses plot(), image(), and a custom
function that uses text(). Each cell of the layout needs different par()
parameters, so what I'd like to do is pass them as lists:
2010 Nov 13
1
StorNext CVFS
Morning All!
Anyone ever tried exporting a StorNext CVFS filesystem from a Linux box???
I?ve got this Samba server (3.5.6) running on CentOS 5.4 and it?s working
fine, exporting ext3, nfs and an IBM GPFS filesystem just fine. So I know
Samba is good an my configuration is working.
I tried to add the exportation of a StorNext CVFS volume and that doesn?t
work. All the other volumes still work