Displaying 20 results from an estimated 4000 matches similar to: "Select maximum subset"
2011 Nov 10
2
library(qpcR) cbind.na
I want to use function cbind.na at library(qpcR)
I install package qpcR and I can use functions such
m1 <- pcrfit(reps, 1, 2, l5)
> AICc(m1)
[1] -102.5843
but when i try cbind.na(1, 1:7) i take message
Error: could not find function "cbind.na"
Thanks
--
View this message in context: http://r.789695.n4.nabble.com/library-qpcR-cbind-na-tp4023339p4023339.html
Sent from the
2010 Aug 26
2
Problems when Apply a script to a list
Dear users,
*******I have a function f to simulate data from a model (example below used
only to show my problems)
f<-function(n,mean1){
a<-matrix(rnorm(n, mean1 , sd = 1),ncol=5)
b<-matrix(runif(n),ncol=5)
data<-rbind(a,b)
out<-data
out}
*********I want to simulate 1000 datasets (here only 5) so I use
S<-list()
for (i in 1:5){
S[[i]]<-f(n=10,mean1=0)}
******I have a
2011 Oct 28
2
Faster process for creating a matrix based on matrix element comparison
I have matrix data
data<-matrix(cbind(c(0,0,0),c(NA,0,1),c(1,1,1),c(0,1,1)),ncol=3)
and I want to create a new matrix by checking each element of the data and
put value 0 if i have NA and 1 otherwise.
For this reason i made the function below
pdata<-matrix(NA,ncol=ncol(data),nrow=nrow(data))
pdata<-sapply(1:nrow(data),function(i) sapply (1:ncol(data),function(j)
if (is.na(data[i,j]))
2010 Aug 09
2
Results with name of dataset
I generate and save a dataset
For example
exampledata<-runif(10)
library("R.utils");
saveObject(exampledata, file="exampledata_9810.RData");
exampledata_9810<- loadObject("exampledata_9810.RData");
I use ex function to make alot of calculations using sink to export results
(in this simply example only summary of dataset)
ex<-function(data){
2006 Jun 07
4
Question: coding protected methods
Apologies first, because I need to ramp up on Ruby and coding Ruby in Rails,
however it''s my 3rd day with this beast :) so I''m asking :
When I added protected methods to the model before it was like:
protected
method....................
end
Would this be a valid way to write a protected method as well ?:
attr_protected :column1, :column2
Perhaps this particular call
2012 Nov 23
3
daily maximum temperature
Hello,
I want to filter the daily maximum temperature. For this i made this
skript, but it come out wrong results. Can anybody help me?
Thanks for your help!
Best regards
datos$X <- as.POSIXct(strptime(datos$X, "%d/%m/%Y %H:%M:%S"))
z <- aggregate(zoo(datos$Ta), as.POSIXct(datos$X), max)
> str(datos)
'data.frame': 17137 obs. of 5 variables:
$ X : Factor w/
2004 Mar 28
1
add "select" to subset docs (PR#6710)
Full_Name: ivo welch
Version: current
OS: linux
Submission from: (NULL) (130.132.33.212)
* In the ?subset page, please add
subset( dataframe, select= c(-column1,-column2) )
returns a dara frame that is without columns 1 and 2 .
* Also, in ?lm, it would be nice to add a few more words about how to get a
residuals vector of the same length as the variable vectors, even if there
2008 Jun 16
1
Error in maximum likelihood estimation.
Dear UseRs,
I wrote the following function to use MLE.
---------------------------------------------
mlog <- function(theta, nx = 1, nz = 1, dt){
beta <- matrix(theta[1:(nx+1)], ncol = 1)
delta <- matrix(theta[(nx+2):(nx+nz+1)], ncol = 1)
sigma2 <- theta[nx+nz+2]
gamma <- theta[nx+nz+3]
y <- as.matrix(dt[, 1], ncol = 1)
x <- as.matrix(data.frame(1,
2010 Sep 04
2
Function try and Results of a program
Hello, users.
Dear users,
*******I have a function f to simulate data from a model (example below used
only to show my problems)
f<-function(n,mean1){
a<-matrix(rnorm(n, mean1 , sd = 1),ncol=5)
b<-matrix(runif(n),ncol=5)
data<-rbind(a,b)
out<-data
out}
*********I want to simulate 1000 datasets (here only 5) so I use
S<-list()
for (i in 1:5){
S[[i]]<-f(n=10,mean1=0)}
2010 May 31
2
accessing a data frame with row names
Readers,
I have entered a file into r:
,column1,column2
row1,0.1,0.2
row2,0.3,0.4
using the command:
dataframe<-read.table("/path/to/file.csv",header=T,row.names=1)
When I try the command:
dataframe[,2]
I receive the response:
NULL
I was expecting:
row1 0.2
row2 0.4
What is my error with the syntax please?
Yours,
r251
mandriva2009
2004 Nov 23
5
number of pairwise present data in matrix with missings
is there a smart way of determining the number of pairwise present data
in a data matrix with missings (maybe as a by-product of some
statistical function?)
so far, i used several loops like:
for (column1 in 1:99) {
for (column2 in 2:100) {
for (row in 1:500) {
if (!is.na(matrix[row,column1]) & !is.na(matrix[row,column2])) {
pairs[col1,col2] <- pairs[col1,col2]+1
2006 Aug 30
4
Barplot
Dear all,
I have a dataset. I want to make barplot from this data.
Zero1 <- "
V1 V2 V3 V4 V5 V6 V7 V8 V9
1 1 0 0 0 1 0 0 0 Positive
2 0 0 1 0 1 0 1 1 Negative
3 0 0 1 0 0 0 1 1 Positive
4 0 1 0 1 1 1 0 1 Negative
5 0 0 1 0 1 1 0 0 Positive
6 0 1 0 0 1 1 1 1 Negative
7 1 0 1 1 1 1 1 1 Negative
8 0 0 0 0 1 0 0 1
2007 Dec 06
2
How can I plot this graph
Hi,
I am having trouble plotting the graph I need given the follow kind of data
> xxx <- data.frame(
"x"=c(1,2,3,4,5),
"y1"=c(2,4,3,5,6),
"y2"=c(3,4,6,3,1),
"y3"=c(1,3,5,7,3),
"z1"=c(1,NA,3,5,NA),
"z2"=c(2,NA,4,6,NA) )
> xxx
x y1 y2 y3
2009 May 14
2
Function to read a string as the variables as opposed to taking the string name as the variable
I am writing a custom function that uses an R-function from the
reshape package: cast. However, my question could be applicable to
any R function.
Normally one writes the arguments directly into a function, e.g.:
result=cast(table1, column1 + column2 + column3 ~ column4,
mean) (1)
I need to be able to write this statement as follows:
result=cast(table1, string_with_columns ~
2006 Apr 12
9
Showing Images from a file store
Hi all.
I am wrting a small content management tool for my company and was
trying to display some images from our file store shown below.
<td> <img src="\\xx.xx.xxx.xx\xx\xx\xxx\abc.gif"/>
The app was displaying the image when it is under the \public\images
directory.
Is there anything special we need to do to get a file from outside the
root of the application?
Any help
2008 Feb 26
1
Split data.frames depeding values of a column
Hello to all
is there a function wich splits a data.frame (column1,column2,column3,....)
into
data1 <-(column1,column3....) #column2 = 1
data2 <-(column1,column3....) #column2 = 2
data3 <-(column1,column3....) #column2 = 3
...
Regards Knut
2009 Jul 07
2
How to separate the string?
Hi everyone,
Hi want to separate the string(column1) for example
column1 column2 column3 column4 column5 column6
bear b e a r
cat c a t
tiger t i g e r
I know how to do this in excel where using MID function.
Now I want to solve it using R. The list of strings is in
2006 May 09
9
Active Record HELP!!!!!
Hello,
Can someone kindly tell what the heck creating a relationship does in
active record?
I understand the idea of joining the tables and such. But how do I use
it? Is it available in a scaffold? How about when I want to view a
record and want to see all the joined data from the other table? Do I
have to manually code the data I want from the other table? Does this
automatically make the
2003 Aug 07
2
Question about 'NA'
Hi all,
Ive got a database with 10 columns (different
variables) for 100 subjects, each column with
different # of NA's. I'd like to know if it is
possible to use a function to exclude the NA's using
only a specific column, lets say:
Data2 <- omit.exclude(Data1$column1) ??, then
Data3 <- omit.exclude(Data1$column2) and so on
I tried the code above but with no results
Thanks
2009 Jun 15
2
Help with syntax error
Hi,
I have written boxplot commands of this form before, but I don''t quite understand why the function call is reporting a syntax error in this instance. All parameters passed to the function are strings.
Thanks in advance.
Payam
> simplevar <- function(wframe,column1,column2) {
+ tframe <- get(wframe)
+ x1 <- which(names(wframe)==column1)
+ x2 <-