Displaying 20 results from an estimated 300 matches similar to: "Left/right hand side characters"
2011 Feb 14
4
sem problem - did not converge
Someone can help me? I tried several things and always don't converge
# Model
library(sem)
dados40.cov <- cov(dados40,method="spearman")
model.dados40 <- specify.model()
F1 -> Item11, lam11, NA
F1 -> Item31, lam31, NA
F1 -> Item36, lam36, NA
F1 -> Item54, lam54, NA
F1 -> Item63, lam63, NA
F1 -> Item65, lam55, NA
F1 -> Item67, lam67, NA
F1 ->
2013 Apr 16
1
Path Diagram
Hi All,
Apologies if this has been answered somewhere else, but I have been
searching for an answer all day and not been able to find one.
I am trying to plot a path diagram for a CFA I have run, I have installed
Rgraphviz and run the following:
pathDiagram(cfa, min.rank='item1, item2, item3, item4, item5, item6,
item7, item8, item9, item10, item11, item12', max.rank='SMP,
2010 Jun 06
1
Why did TukeyHSD not work when I used it for post-hoc for 2way within-subjects anova?
Dear R people,
I have a couple of questions about post-doc analyses for 2 by 2 within
subjects ANOVA. I conducted a psycholinguistic study that combined a 2 by 2
design and a latin square design. Specifically, I had 32 items each of which
generated 4 conditions. Participants saw each of the 32 items only once: 8
in Condition A, 8 in B, 8 in C, and 8 in D. The table below serves as an
example.
2008 Jan 10
1
data.frame manipulation: Unbinding strings in a row
Hi all,
I have a data.frame I received with data that look like this (comma
separated strings in last row):
ID Shop Items
ID1 A1 item1, item2, item3
ID2 A2 item4, item5
ID3 A1 item1, item3, item4
But I would like to unbind the strings in col(2) items so that it will look
like this:
ID Shop Items
ID1 A1 item1
ID1 A1 item2
ID1 A1 item3
ID2 A2 item4
ID2 A2 item5
ID3 A1 item1
ID3 A1 item3
ID3 A1
2010 Feb 25
2
Restructure some data
Suppose I have a data frame like "dat" below. For some context, this is the format that represents student's taking a computer adaptive test. first.item is the first item that student was administered and then score.1 is the student's response to that item and so forth.
item.pool <- paste("item", 1:10, sep = "")
set.seed(54321)
dat <- data.frame(id =
2010 May 20
1
use object within rda file in for loop
Dear users,
I would like to process all the lists from all *.rda files that I have
in one folder.
Up to now, I can load all the *.rda files without any problem.
The problem is when I want to access the list saved within each *.rda
file (only one list per rda file).
Here is my code:
fpath <- "D:/R"
listnames <- list.files(path=fpath, pattern=glob2rx("*.rda"),
2006 Jul 20
2
Timing benefits of mapply() vs. for loop was: Wrap a loop inside a function
List:
Thank you for the replies to my post yesterday. Gabor and Phil also gave
useful replies on how to improve the function by relying on mapply
rather than the explicit for loop. In general, I try and use the family
of apply functions rather than the looping constructs such as for, while
etc as a matter of practice.
However, it seems the mapply function in this case is slower (in terms
of CPU
2006 Feb 27
4
Getting nuts with sortables...
Folks,
It has been a whole day spent on this but I still can''t get my mind
around the most probably very stupid/basic mistake here... First, the
code I use:
<h3>List A</h3>
<ul id="lista" >
<li id="item1"> Item 1</li>
<li id="item2"> Item 2</li>
<li id="item3"> Item 3</li>
</ul>
2004 Jun 08
2
Recoding a multiple response question into a series of 1, 0 variables
Hello R folks.
1) The question that generated the data, which I call Qx:
Which of the following 5 items have you performed in the past month? (multipe response)
2) How the data is coded in my current dataframe:
The first item that a person selected is coded under a field called Qxfirst; the second selected under Qxsecond, etc. For the first Person, the NAs mean that that person only selected
2007 Nov 25
1
Constructin a call of function including permutation of column names - how to escape parentheses?
Dear R-users,
I would like to construct a list of arguments for a function in a format
function (list(item1=c("A","B"), item2=c("B","C")), item3=...):
The individual vectors in the list are permutations of colnames of a
dataframe.
The trouble is that I am not able to handle escaping of parentheses
correctly.
I was trying the following:
library(gregmisc)
2012 Jan 09
3
as.numeric() generates NAs inside an apply call, but fine outside of it
Hello-
I have rather a messy SPSS file which I have imported to R, I've dput'd
some of the columns at the end of this message. I wish to get rid of all
the labels and have numeric values using as.numeric. The funny thing is
it works like this:
as.numeric(mydata[,2]) # generates correct numbers
however, if I pass the whole dataframe at once like this:
apply(mydata, 1:2, function(x)
2010 Nov 11
4
How to get a specific named element in a nested list
Hello,
I have a nested named list structure, like the following:
x <- list(
list(
list(df1,df2)
list(df3,
list(df4,df5))
list(df6,df7)))
with df1...d7 as data frames. Every data frame is named.
Is there a way to get a specific named element in x?
so, for example,
x[[c("df5")]] gives me the data frame 5?
Thank you in advance!
Best,
Friedericksen
2014 Jun 26
1
using 2D array of SEXP for creating dataframe
Hi ,
For our production package i need to create a dataframein C . So I wrote
the following code
SEXP dfm ,head,df , dfint , dfStr,lsnm;
*SEXP valueVector[2];*
char *ab[3] = {"aa","vv","gy"};
int sn[3] ={99,89,12};
char *listnames[2] = {"int","string"};
int i,j;
//=============================
PROTECT(df = allocVector(VECSXP,2));
2005 Jan 31
1
naming list elements
All -
Each time through a loop I create a new dataset, which I would like to
append to a list object. Each item of the list should be the data matrix
created in that step of the loop; I would like the NAME (or tag) of that
list item to be assigned the value of a character string:
I've tried something like this:
running.list <- numeric(0)
for(i in 1:num.files){
.....
running.list
2014 Mar 06
1
Create dataframe in C from table and return to R
Hi ,
I am trying to create a dataframe in C and sebd it back to R. Can anyone
point me to the part of the source code where it is doing , let me explain
the problem I am having .
--------------------------------------------------------------------
My simple implementation is like this
SEXP formDF() {
SEXP dfm ,df , dfint , dfStr,lsnm;
char *ab[3] =
2009 Nov 29
1
optim or nlminb for minimization, which to believe?
I have constructed the function mml2 (below) based on the likelihood function described in the minimal latex I have pasted below for anyone who wants to look at it. This function finds parameter estimates for a basic Rasch (IRT) model. Using the function without the gradient, using either nlminb or optim returns the correct parameter estimates and, in the case of optim, the correct standard
2010 Nov 10
0
Retrieve all names of nested list and index list based on these names
Hi all,
I looked for a function that would retrieve all(!) names of an arbitrary
deeply nested named list. Also, names should optionally be arranged in a
way that reflects the list's hierarchy structure (i.e. 'a$a.1$a.1.1' etc.)
Also, there should be a recursive index linked to a respective list branch
that could be used to index a list by names (as you would do with named
vectors,
1998 Sep 11
3
SAMBA digest 1809
> From: Gary Stainburn <gary.stainburn@ringways.co.uk>
> To: "Samba Mailing List (E-mail)" <samba@samba.anu.edu.au>
> Subject: smbtar multiple machines
> Message-ID: <01BDDD6E.ABFF0580@garys.computer.leeds>
>
> Hi all,
>
> I'm just looking at using smbtar to backup the Win95 PC's on my network, and would like usability ideas please.
>
2008 Mar 11
1
Rtools and GCC4 problem
>>
I am trying to compile rseries from Whit Armstrong and a colleague of mine found
a problem with using GCC4
I get the following error when compiling rseries
g++-sjlj -Ic:/R/include -O2 -Wall -c Rutils.cpp -o Rutils.o
Rutils.cpp: In function 'double* getColPointer(SEXPREC*, int)':
Rutils.cpp:406: warning: deprecated conversion from string constant to 'char*'
2012 May 29
1
model frame and formula mismatch with latent class analysis poLCA
Dear R-users,
I keep getting an ERROR saying " Error in model.matrix.default(formula,
mframe) : model frame and formula mismatch in model.matrix() " when i fit
poLCA with more than 63 variables. Below are the details.
I am trying to do a Latent Class Analysis using poLCA. My data set contains
binary scores of, for instance, 200 students on 100 items. These numbers
could even be more