Displaying 20 results from an estimated 3000 matches similar to: "many chr2factors ?"
2005 Jan 17
1
merge data frames taking mean/mode of multiple macthes
Hello :)
I have two data frames, one has properties taken on a
piece by piece basis and the other has performance on
a lot by lot basis. I wish to combine these two data
frames but the problem is that each lot has multiple
pieces and hence i need to take a mean of the
properties of multiple pieces and match it to the row
having data about the lot.
I was wondering if there is a simple commmand,
2006 Nov 06
2
comparing 2 dataframes
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2006 Sep 22
2
Merge problem
Hello all,
I have read as many merge issues as I possibly could tonight and
although I presume this is a small error, I have not found the
solution to my problem.
I'm trying to merge two data sets: dat0 and TransTable. As you can
see below, dat0 has 8000 rows, whereas TransTable has 47296 rows. I
would expect when I merge the two data sets, with all.x=F, and
all.y=F, that the
2003 Sep 24
2
data.frame with duplicated id's
Hi,
is there a exstisting function (..i found nothing until now.)
what makes it possible transfrom a dataset:
ID AGE V.MAI V.JUNE
11 20 100 120
12 30 200 90
into
ID AGE V
11 20 100
11 20 120
12 30 200
12 30 90
,or have i to programm ths my self?
Thanks for any comment, help and/or starting point.
regards,christian
2009 Feb 24
2
Syntax in taking log to transfrom the data to fit Gaussian distribution
Hi,
I have a data set (weight) that does not follow the Gaussian (Normal)
distribution. However, I have to transform the data before applying the
Gaussian distribution. I used this syntax and used log(weight) as:
posJy.model<-glm(log(weight) ~ factor(pos),
family=gaussian(link='identity'), subset=Soil=="Jy"). This syntax COULD NOT
transform the data. But if I transform the
2014 Mar 06
1
Fail to convert LXC container configuration into a domain XML fragment
Hi, all,
I used lxc-tools to create a linux container. I am trying to transfrom LXC
container configuration into a domain XML fragment using the following
command:
*$ virsh -c lxc:/// domxml-from-native lxc /var/lib/lxc/my_conatiner/config*
However, I get the error message,
error: this function is not supported by the connection driver:
virConnectDomainXMLFromNative
It seems that
2007 Jan 23
1
"tapply" and "data.frame"?
I want to transform the data by "tapply" to one dataframe. But I can not get
it.
For example:
> tst=tapply(point,pp,length)
> tst[1:10]
p1 p10 p100 p1000 p1001 p1002 p1003 p1004 p1005 p1006
1 5 1 8 6 5 8 7 4 4
> res=as.data.frame(tst) # I try to transform it
> res[1:10,]
p1 p10 p100 p1000 p1001 p1002 p1003 p1004 p1005 p1006
1 5 1 8 6 5
2005 Jan 11
3
Kolmogorov-Smirnof test for lognormal distribution with estimated parameters
Hello all,
Would somebody be kind enough to show me how to do a KS test in R for a
lognormal distribution with ESTIMATED parameters. The R function
ks.test()says "the parameters specified must be prespecified and not
estimated from the data" Is there a way to correct this when one uses
estimated data?
Regards,
Kwabena.
--------------------------------------------
Kwabena Adusei-Poku
2006 Mar 15
2
difftime arguments
Hi
I just started using RGui.exe under widnows.
I have a text file containing date arranged in columns and rows, each column has the same format, each row with different formats. 3 of the columns are something like this 1/12/2006 3:59:45 PM
I need to calculate the different in seconds between 2 selected periods using their row’s index
My solution:
Read the file in a data frame and
2009 Dec 26
3
[LLVMdev] "Graphite" for llvm
Hi ether,
On 12/26/09 13:06, ether zhhb wrote:
> hi,
>
> dose anyone going/planning to add something like
> Graphite(http://gcc.gnu.org/wiki/Graphite) in gcc to llvm(or that
> should be implement at the level of clang?)?
I already looked into implementing something like Graphite for LLVM.
However just recently, so I have not released any code yet. As soon as
some code is
2006 Sep 25
1
apply: new behaviour for factors in R-2.4.0
Dear R-core
There is a different output for the apply function due to the
change of unlist as mentioned in the R news.
Newly, applying as.factor() (or factor()) in
str(dat <- data.frame(x = 1:10, f1 = gl(2,5,labels = c("A", "B"))))
(d1 <- apply(dat,2,as.factor))
newly returns a character matrix while in R-2.3.1 the same
command resulted in an integer matrix that was
2007 Jun 19
2
Preconditions for a variance analysis
Hello everbody,
i'm currently using the anova()-test for a small data.frame of 40
rows and 2 columns. It works well, but is there any preconditions for
a valid variance analysis, that i should consider?
Thank you for your answer,
Daniel
2006 Apr 25
1
summary.lme: argument "adjustSigma"
Dear R-list
I have a question concerning the argument "adjustSigma" in the
function "lme" of the package "nlme".
The help page says:
"the residual standard error is multiplied by sqrt(nobs/(nobs -
npar)), converting it to a REML-like estimate."
Having a look into the code I found:
stdFixed <- sqrt(diag(as.matrix(object$varFix)))
if (object$method
2005 May 15
3
adjusted p-values with TukeyHSD?
hi list,
i have to ask you again, having tried and searched for several days...
i want to do a TukeyHSD after an Anova, and want to get the adjusted
p-values after the Tukey Correction.
i found the p.adjust function, but it can only correct for "holm",
"hochberg", bonferroni", but not "Tukey".
Is it not possbile to get adjusted p-values after
2006 Jan 18
3
linear contrasts with anova
I have some doubts about the validity of my procedure to estimeate linear contrasts ina a factorial design.
For sake of semplicity, let's imagine a one way ANOVA with three levels. I am interested to test the significance of the difference between the first and third level (called here contrast C1) and between the first and the seconda level (called here contrast C2). I used the following
2005 Aug 02
1
plotting 3 functions on same graph
hi all,
I wish to draw on the same graphic device 3 functions.
But i don't want them to be on different graph, i want to compare them on the same
I don't need mfrow or mfcol, I need something else...
1 graph on 1 device inside this graph 3 ploted function.
I saw something unsing data.frame, but i think it's overkill, and something less complicated must exist, if not why?
why not
2005 Jan 25
1
r square values for independent variables in multiple linear regr ession model -- newbie
Hello
Could you please suggest a way to find out the r square values for each
independent variable while using "lm" for developing a multiple linear
regression model.
Thank you
avneet
"I have no data yet. It is a capital mistake to theorize before one has
data. Insensibly one begins to twist facts to suit theories instead of
theories to suit facts."
~ Sir Arthur Conan Doyle
2006 Jan 30
2
Type II SS for fixed-effect in mixed model
Hi
In mixed-model with lme()
How can I obtain Type II SS or Type III SS for fixed effect?
Thanks
Julien
2006 Feb 01
1
Randomised Block Design
Hi, I'm studying math, and i have to make an analysys using Randomised
Block Design. I have two factors, i know how to do this in Statistica, but
how to do this in R, i read some manuals but the only thing that i have
found was 2 factor ANOVA.
Please could someone help me, or give some usefull links ??
Krzytsztof Suwada
2006 Feb 20
1
Extracting variance components from lmer
Hi All.
I need a bit of help extracting the residual error variance from the VarCorr
structure from lmer.
#Here's a 2-way random effects model
lmer.1 <- lmer(rating ~ (1|person)+(1|rater), data = dat)
#Get the structure
vc.fit <- VarCorr(lmer.1)
#results in.....
$person
1 x 1 Matrix of class "dpoMatrix"
(Intercept)
(Intercept) 0.7755392
$rater
1 x 1 Matrix