Displaying 20 results from an estimated 30000 matches similar to: "read.table as integer"
2013 Mar 19
4
Copying rows in data frames
Hi,
I'm trying to copy the first row of one data frame to another. This is the
statement I am using :
df2[1,]<-df1[1,];
I have printed them out separately:
df1[1,] = A C D E F
But after copying:
df2[1,] = 96 29 88 122 68
Why isn't it copying? They are both data frames, and "as.character" isn't
working either.
Thanks for your input :)
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2012 Feb 13
3
Change dataframe-structure
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2010 Oct 20
2
rowsum
Hello,
I am trying to achieve something which I *think* is possible using rowsum,
but a little help should be useful:
Consider the following dataframe DF0:
A B C
89 1 140
89 06 20
89 29 137
89 52 13
89 57 10
89 97 23
89 1 37
89 1 12
89 1 3
52 1 11
52 1 31
52 1 16
52 1 6
52 1 10
52 1 13
52 1 10
52 1 25
52 1 2
52 59 38
52 97 75
57 1 14
57 1 13
57 1 14
57 114 12
57 1 23
57 06 26
I need create a
2009 Sep 19
1
Re-order columns
Dear R'sians,
Would really appreciate if you could suggest a more efficient way to order
the columns of a dataset. The column names of the dataset contain indices
separated by a period. Following are examples of my code and the dataset.
oC <- function(tg=x2) {
lth <- length(grep("T",names(tg)))
thix <-
2024 Oct 17
2
DPLYR Multiple Mutate Statements On Same DataFrame
Hi R Helpers,
I have been looking for an example of how to execute different dplyr mutate statements on the same dataframe in a single step. I show how to do what I want to do by going from df0 to df1 to df2 to df3 by applying a mutate statement to each dataframe in sequence, but I would like to know if there is a way to execute this in a single step; so simply go from df0 to df1 while executing
2005 Feb 04
1
(no subject)
Hi.
I have a problem that I can't seem to find an optimal way of solving other
than by doing things manually. I'm trying to subset a data frame by the
number of observations that occurred at a given row but want to take into
account the number of observations of preceding rows. Here's an example.
I'm looking at intervals of data [10,20), [10, 30), ....., [10,120) which
contain a
2024 Oct 18
1
DPLYR Multiple Mutate Statements On Same DataFrame
?s 22:50 de 17/10/2024, Sparks, John escreveu:
> Hi R Helpers,
>
> I have been looking for an example of how to execute different dplyr mutate statements on the same dataframe in a single step. I show how to do what I want to do by going from df0 to df1 to df2 to df3 by applying a mutate statement to each dataframe in sequence, but I would like to know if there is a way to execute this
2016 May 12
2
Division entre el numero de ocurrencias parciales y totales dentro de un DataFrame de manera eficiente
Hola:
A ver si me podéis ayudar que estoy atascado...
Necesito contar los subcasos de la columna 2 de un dataframe respecto a los
casos de la columna 1.
Es decir, tengo un data.frame
a<-c(rep(c('a','b','c','b','c'),3),'b')
b<-c(rep(c('x','y','z','w'),4))
c<-c(rep(c(1,1,0,0),4))
2016 May 13
2
Division entre el numero de ocurrencias parciales y totalesdentro de un DataFrame de manera eficiente
Hola:
Aplicaré lo que dices de usar data.table.
Sobre hacer for, etc. Ya lo he hecho, pero pensaba que usar dplyr haría la
tarea más rápida por estar este implementado en C (si no me equivoco).
Siempre que puedo utilizo estas funciones, porque codificas menos y van más
rápido. En este caso el problema es que no he encontrado la manera de hacer
lo que quiero con dplyr o similar. La idea era al
2012 May 02
5
uneven vector length issue with read.zoo?
I truncated and simplified my code and the read in data that I'm working with
to isolate the issue. Here is the read in data and R script respectively:
http://r.789695.n4.nabble.com/file/n4604287/test.csv test.csv
http://pastebin.com/rCdaDqPm
Here is the terminal/R shell output that I hope the above replicates on your
screen:
> source("elecLoad.r", echo = TRUE)
> #Load
2020 Sep 10
5
aplicar codigo
Hola:
Como dice Carlos, algo así, por ejemplo:
transforma <- function(df) sapply(df, function(x)
ifelse(x%in%c("x1","x2","x3"),
"prueba1",ifelse(x%in%c("x4","x5","x6"),"prueba2",x)))
> transforma(df1)
col1
[1,] "prueba1"
[2,] "prueba1"
[3,] "x11"
[4,]
2012 Nov 14
1
R wildcards, sapply and as.factor
I want to change the type to factor of all variables in a data frame whose names match a certain pattern.
So here I am trying to change the type to factor of all variables whose name begins with?namestub?in the dataframe?df.
attach(df)sapply(grep(glob2rx("namestub*"),names(df)),as.factor)
But this doesn't work since
>levels(df$namestub1)NULL
2011 Nov 29
2
Help with recast() syntax
Dear Help-Rs,
I have data similar to the following:
DF <- structure(list(X = 1:22, RESULT = structure(c(2L, 2L, 2L, 2L,
2L, 2L, 2L, 2L, 2L, 2L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
1L, 1L), .Label = c("NEG", "POS"), class = "factor"), YR_MO = c(201011L,
201012L, 201101L, 201102L, 201103L, 201104L, 201105L, 201106L,
201107L, 201108L, 201109L, 201011L,
2016 Sep 21
2
strcapture enhancement
The new strcapture function in R-devel is handy, capturing
the matches to the parenthesized subpatterns in a regular
expression in the columns of a data.frame, whose column
names and classes are given by the 'proto' argument. E.g.,
> p1 <- data.frame(Name="", Number=0)
> str(strcapture("([[:alpha:]]*) +([[:digit:]]*)", c("Three 3", "Twenty
2012 Nov 22
4
Data Extraction
Hello,
I would appreciate if someone could help me resolve the following:
1. df1[!is.na( X1 | X2 | X3 | X4 | X5),][,1:5] # This does not work
2. Is these message harmful? The following object(s) are masked from 'df1 (position 3)':
X1, X2, X3, X4, X5
Thanks,
Pradip Muhuri
#Reproducible Example
set.seed(5)
df1<-data.frame(matrix(sample(c(1:10,NA),100,replace=TRUE),ncol=5))
2012 Jun 13
5
finding duplicates in a data frame
I have two data frames which has 3 columns each.My first data frame is large
like this below
"new.col ppm.p. freq.p."
"1_3_diaminopropane 3.13859 5.67516"
"1_3_diaminopropane 3.137 6.65388"
"1_3_diaminopropane 3.13541 8.0142"
"1_3_diaminopropane 3.13383 9.64184"
"1_3_diaminopropane 3.12075 298.243"
"1_3_diaminopropane 3.1152
2013 Apr 08
3
Reshaping a table
Hello all,
I have data in the form of a table:
X Y1 Y2
0.1 3 2
0.2 2 1
And I would like to transform in the form:
X Y
0.1 Y1
0.1 Y1
0.1 Y1
0.1 Y2
0.1 Y2
0.2 Y1
0.2 Y1
0.2 Y2
Any ideas how?
Thanks in advance,
IOanna
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2020 Sep 10
3
aplicar codigo
Hola,
me gustar?a hacer algo como en el siguiente ejemplo
A un df a?adirle una columna que es la transformaci?n de otra,
en plan a todo lo que sea x1, x2, x3 lo llamo prueba 1
todo lo que sea x4,x5,x6 lo llamo prueba 2
el resto de x las dejo como est?n.
Ser?a algo as?
col1 <- c('x1', 'x2', 'x11', 'x1','x33', 'x1','x4', 'x5',
2011 Dec 08
2
read.table question
Hello All,
This works,
results <- read.table("plink.txt",T)
while this doesn't.
results <- read.table("plink.txt")
Make sure your data frame contains columns CHR, BP, and P
What does adding the "T" in read.table do? Which argument does this
correspond to? I tried searching for it but didn't find the answer in:
read.table(file, header = FALSE,
1997 Apr 30
2
R-alpha: New Incomplete Beta Function
Here is a drop-in replacement for the R incomplete beta function.
src/math/pbeta.c
It is a slightly modified version of the cephes library one from
Netlib. In the few cases I tried it seems to give at least 14
digit agreement with the one in S-PLUS (its hard to get more).
I'm not sure what performance is like. I'd like to know if it
helps with some of the problems which have been