Displaying 20 results from an estimated 700 matches similar to: "Problem with sequence in loop"
2009 Dec 20
3
Object of type 'closure' not subsettable
Hi all,
How can I overcome the error "object of type 'closure' not subsettable"
I ran the following script
seq <- paste(seq(1914, 1916, by=1), "*.y", sep=".") # make sequence
c <- 3 # total number of files
d2 <- file # creates dummy file
# Input sequence in loop
for (i in 1:3){
list <- list.files("~/ukcp09/txt/x.djf", seq[[i]])
file
2010 Jan 02
1
Question on Reduce + rollmean
Hello useRs,
I'd like to perform a moving average on the dataset, xx. I've tried
combining the functions Reduce and rollmean but it didn't work.
> r <- function(n) rollmean(n, 2) # where 2 = averaging interval
> output < - Reduce("r", x)
Error in f(init, x[[i]]) : unused argument(s) (x[[i]])
Is there anything wrong with the code in the first place?
where
2009 Dec 07
1
Output multiple files
Hello,
I want the ouput to take the name of the original file. I have the following code - but the problem is that the output overrides the original file which I desire not.
So given an input file called File1.txt, I want the ouput to be called File1.out.txt, or something along this line. I'm working with many files, fyi.
out=c("file1.txt", "file2.txt",
2010 Jan 06
1
Increment in loop
useRs,
I'm getting limited success in trying to apply increment in a loop.
The following defined function creates a +1 increment
incr <- function(x){
eval.parent(substitute(x <- x + 1))
print(x) }
How do I apply it in a loop on my test dataset, x1, so that the procedure becomes
x1[c(1:2)]
x1[c(2:3)]
x1[c(3:4)]
where x1 =
> m <- matrix(1:3,3,3)
> x1 <- list(m, m+1,
2009 Dec 30
2
select elements and transpose
Hi all,
Given the following,
> xx
[[1]]
V1 V2 V3
[1,] 1 2 3
[2,] 4 5 6
[3,] 7 8 9
[[2]]
V1 V2 V3
[1,]10 11 12
[2,]13 14 15
[3,]16 17 18
[[3]]
V1 V2 V3
[1,]19 20 21
[2,]22 23 24
[3,]25 26 27
how do i extract elements in each file so that after transpose, it looks
something like the following;
1
10
19
2
11
20
3
12
21
and so on..
Thanks..
--
Muhammad
2009 Dec 04
2
Standard deviation for each element in a set of matrices
Hello R-users,
I would like to know how to find the standard deviation for each element
in a set of matrices.
Given the following files,
File1 File2 File3
1 1 1 4 4 4 7 7 7
2 2 2 5 5 5 8 8 8
3 3 3 6 6 6 9 9 9
I want to calculate the standard deviation for every cell in the file
(I'm using gridded data). The desired output is
Output
3 3 3
3 3
2009 Dec 02
2
Arithmetic on multiple files
Dear R-users,
I'd like to perform arithmetic functions on 1000 files containing a
2000x2000 matrix. Can anyone advise?
For example,
File1 File2 Output
1 1 1 4 4 4 5 5 5
2 2 2 + 5 5 5 = 7 7 7
3 3 3 6 6 6 9 9 9
Muhammad
--
Muhammad Rahiz | Doctoral Student in Regional Climate Modeling
Climate Research
2010 Jan 12
1
Drought Severity Index (DSI)
Does anyone have the code to calculate the drought severity index?
--
Muhammad Rahiz | Doctoral Student in Regional Climate Modeling
Climate Research Laboratory, School of Geography & the Environment
Oxford University Centre for the Environment, University of Oxford
South Parks Road, Oxford, OX1 3QY, United Kingdom
Tel: +44 (0)1865-285194 Mobile: +44 (0)7854-625974
Email: muhammad.rahiz
2009 Dec 27
3
Scaling error
Hi useRs,
I ran into an inconsistent output problem again. Here is the simplify
illustration
I've got a matrix as follows
> x
V1 V2 V3
[1,] 1 2 3
[2,] 4 5 6
[3,] 7 8 9
Associated with the matrix is a scaling factor, sca, derived from, say
the mean of the respective columns, V1-V3;
> sca
V1 V2 V3
2.5 1.7 3.6
2009 Dec 26
1
if else does not return right value
Hi all,
I'm not getting the right results for values that are >99 using the if
else function. The following illustrates the problem
> x <- as.matrix(read.table("test.txt"))
> x
V1 V2 V3
[1,] 47 1 43
[2,] 83 2 42
[3,] 1 3 41
[4,] 39 4 40
[5,] 23 5 39
[6,] 23 6 38
[7,] 39 7 37
[8,] 32 8 36
[9,] 73 9 35
[10,] 124 10 34
Specifying the
2010 Jan 16
2
Drought severity index: Excel to R
Dear all,
I'm trying to make an R code for the drought severity index (DSI)
developed by Philips and McGregor (1998). You can refer to the
description of the algorithm on page 19 from
http://dissertations.port.ac.uk/229/01/MaloneS.pdf
The code is given in Excel as the following and can be found on page 60
from the same link.
C7 =
IF(C6<0,IF(@SUM(A6:A1)<0,C6+A6,"0"),
2018 Mar 16
1
Help on multi-line plot
Hello R-Users
I am struggling with this line plot, it might be simple but I am missing
something here.
First of all I want to make multiple line plots across seasons
(DJF,MAM,JJA,SON) for 12 variables (here, called nodes) and fill them with
the node.
So that season=x-axis, node=line col and freq=y-axis.
My plot currently links all DJFs, MAMs, JJAs and SONs, however I will like
them to be
2002 May 31
2
error in seq.POSIXt?
I am trying to extract only the winters (defined to be 01-Dec through
28-Feb) of daily data from 1948-2002. There are 90 days in each winter
season. I wrote the following code to gather the winter dates into a
single vector:
DJF <- NULL
for(year in 1949:1999) {
temp.begin <- strptime(paste("01/12", year-1, sep="/"), "%d/%m/%Y")
temp.end <-
2011 Sep 22
2
Subsetting a zooreg object using window / subset
Dear R users,
I am currently working in subsetting a zooreg() object using either window or subset. I have a solution but it may be a bit cumbersome when I start working with actual data. Your inputs would be greatly appreciated.
Example: I have a zooreg() object that starts in 1997 and ends in 2001. This object contains daily data for the 4 years
2009 Nov 17
1
How to plot an image in R
Dear all
Im new in R
I have a necdf data set that I want to plot :
this is my data set
[1] "file Tmax.DJF.daily.1981_1999.echama2.nc has 4 dimensions:"
[1] "longitude Size: 127"
[1] "latitude Size: 110"
[1] "ht Size: 1"
[1] "t Size: 1680"
[1] "------------------------"
[1] "file Tmax.DJF.daily.1981_1999.echama2.nc has 1
2007 Mar 23
2
concatenate 2 data.frames
Dear all,
I would like to know how can I concatenate 2 data.frames into a single one. Both data frames have the same number of columns and the same class type in each correspondent column. So what I want is to have a new data.frame where I have first the values from one data.frame and then the values from a second data.frame would came after in this new data.frame.
Thanks in advance.
Med
2012 Nov 06
1
how Can make function for selecting the products
HI.
I make this code:
getdata<-function('a','b','c' ,'d','e','f'){
drv <- dbDriver("SQLite")
con<-dbConnect(drv, "sqlite.db")
lt<-dbListTables(con)
myf<-data.frame(NULL)
for (i in 1:length(lt))
{
myfile<-dbReadTable(con,lt[i])
myfile1<-myfile[-c(14:44)]
myfile1$MODEL<-gsub(" ",
2013 Apr 15
1
Kruskal-Wallis
Hi,
I have got two groups of samples; and for every row, I wish to calculate
Kruskal-Wallis' p-value.
In the example below, and the stars (****) show where I am struggling to
design and put things together. Any help would be appreciated.
myFile <- data.frame(Sample_1a = 1:10, Sample_1b = 2:11, Sample_1c = 3:12,
Sample_2a=4:13, Sample_2b=7:16, row.names=LETTERS[1:10])
groups <- rep
2011 Sep 24
1
help
Mathew Brown
Institute of Bioclimatology
University of G?ttingen
B?sgenweg 2
37077 G?ttingen, Germany
t: +49 551 39 9359
mathew.brown at forst.uni-goettingen.de
On 9/24/2011 6:00 PM, r-help-request at r-project.org wrote:
> Send R-help mailing list submissions to
> r-help at r-project.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
>
2008 Apr 08
4
permutation test assumption?
Dear all,
Can I do a permutation test if the number of individuals in one group is much bigger than in the other group? I searched the literature but I didin´t find any assumption that refers to this subject for permutation tests.
Best regards
João Fadista
Ph.d. student
UNIVERSITY OF AARHUS
Faculty of Agricultural Sciences
Dept. of Genetics and Biotechnology
Blichers Allé 20, P.O.