Displaying 20 results from an estimated 20000 matches similar to: "Highly significant intercept and large standard error"
2004 Feb 23
2
About lossless and point stereo
Hi,
I've read the Vorbis stereo documentation on square polar mapping and
currently reading the source code to understand it. But there are some
things which I don't quite understand and hope I can get some guidance on.
I understand the decoding/decoupling part as it is the same as the one
described in the stereo docs:
From mapping0.c:
/* channel coupling */
2007 Aug 07
1
lm( ) for log10-transformed data
Dear help-list,
I would like to perform a linear regression on the log10 of the two
vectors ov.mag.min and res.600nm. The slope and intercept of the
regression I use to plot a wider range of ov.mag.min in a double log plot.
For a linear regression on only tow points, wouldn't I expect the
results for two.points.min to match pretty exactly res.600nm? It does
not seem to be the case here.
2012 Mar 04
2
Can't find all levels of categorical predictors in output of zeroinfl()
Hello,
I?m using zero-inflated Poisson regression via the zeroinfl() function to
analyze data on seed-set of plants, but for some reason, I don?t seem to be
getting the output for all three levels of my two categorical predictors.
More about my data and model:
My response variable is the number of viable seeds (AVInt), and my two
categorical predictors are elevation (Elev) and Treatment
2011 Sep 08
1
predict.rma (metafor package)
Hi
(R 2.13.1, OSX 10.6.8)
I am trying to use predict.rma with continuous and categorical variables. The argument newmods in predict.rma seems to handle coviariates, but appears to falter on factors. While I realise that the coefficients for factors provide the answers, the goal is to eventually use predict.rma with ANCOVA type model with an interaction.
Here is a self contained example
2010 Apr 06
1
CIFS VFS: Send error in read
Hi,
I get while installing windows XP on a I ball Laptop using unattended
(http://unattended.sourceforge.net/)
*** Trying mount.cifs \\ntinstall\install /z -o username=guest,ro,nocase
CIFS VFS: No response to cmd 46 mid 13
CIFS VFS: Send error in read = -11
CIFS VFS: No response to cmd 162 mid 17
CIFS VFS: No response to cmd 162 mid 21
CIFS VFS: No response to cmd 162 mid 25
CIFS VFS: No
2013 Oct 17
1
pamer.fnc y la nueva versión de R
Hola buenas noches,
tengo un problema bastante gordo. ¿A alguno le ha dejado de funcionar las
funciones pamer.fnc y mcp.fnc con la nueva versión de R? La semana pasada
formatee el ordenador y ahora scripts antiguos no funcionan. La cuestión es
que me precupa que no funcione el ejemplo de tutorial del autor.
Os dejo un script que debería de funcionar y no lo hace
2007 Oct 12
1
Differencing data by groups
Colleagues,
I am analyzing data collected during oceanographic cruises. We have
conducted many cruises over the last decade. On each cruise we visit ~50
stations. At each station (termed EventNum)we lower an instrument that
measures depth, temperature, salinity and oxygen every few seconds as it is
lowered through the water. Data from all EventNums on all cruises are
stacked, generating a data
2013 Mar 15
2
nlrob and robust nonlinear regression with upper and/or lower bounds on parameters
I have a question regarding robust nonlinear regression with nlrob. I
would like to place lower bounds on the parameters, but when I call
nlrob with limits it returns the following error:
"Error in psi(resid/Scale, ...) : unused argument(s) (lower = list(Asym
= 1, mid = 1, scal = 1))"
After consulting the documentation I noticed that upper and lower are
not listed as parameter in
2010 Apr 03
2
Using ifelse and grep
Good Morning,
I am trying to create a new column of character strings based on the first
two letters in a string in another column. I believe that I need to use some
combination of ifelse and grep but I am not totally sure how to combine
them. I am not totally sure why the command below isn't working. Obviously
it isn't finding anything that matches my criteria but I am not sure why.
Any
2018 Jun 01
4
Regroup and create new dataframe
Hello folks,
I have a big project to work on and the dataset is classified so I am just
going to use my own example so everyone can understand what I am targeting.
Let's take Target as an example: We consider three brands of tape: Target
brand, 3M and Avery. The original data frame has 4 columns: Year of Record,
Product_Name(which contains three brands of tape), Sales, and Region. I
want to
2007 May 18
4
Simple programming question
Hi R-users,
I have a simple question for R heavy users. If I have a data frame like this
dfr <- data.frame(id=1:16, categ=rep(LETTERS[1:4], 4),
var3=c(8,7,6,6,5,4,5,4,3,4,3,2,3,2,1,1))
dfr <- dfr[order(dfr$categ),]
and I want to score values or points in variable named "var3" following this
kind of logic:
1. the highest value of var3 within category (variable named
2004 Jan 07
2
win 2k3 / XP Pro to Samba 3.0.1 open failed, result=-512
I'm having some confusing problems transferring approximately 16GB, in
about 541,000 individual files.
What is happening is that I am starting with a blank destination
directory on a gentoo system running samba 3.0.1, and pulling from one
of two windows systems. The problems come in that each time I use rsync
(version 2.5.7) over samba to keep the data on the gentoo system's side
in sync
2005 Jan 25
2
tapply and names
I have a data frame containing children, with variables 'year' = birth
year, and 'm.id' = mother's id number. Let's assume that all the births of
each mother is represented in the data frame.
Now I want to create a subset of this data frame containing all children,
whose mother's first birth was in the year 1816 or later. This seems to
work:
mid <-
2009 Mar 20
1
help - smbiod
Hello all,
I need help about smbiod, i have mounted samba server
from linux client with command "mount -t smbfs -o username=root
//10.10.x.x/folder /dest" and then the client ask about password, and
it works, but when i copy files in the middle of the process suddenly
it stoped, then i run command "top" i see "smbiod" use verry high cpu
usage(more than 90%).
Is
2005 Aug 15
2
stepAIC invalid scope argument
I am trying to replicate the first example from stepAIC from the MASS
package with my own dataset but am running into error. If someone can
point where I have gone wrong, I would appreciate it very much.
Here is an example :
set.seed(1)
df <- data.frame( x1=rnorm(1000), x2=rnorm(1000), x3=rnorm(1000) )
df$y <- 0.5*df$x1 + rnorm(1000, mean=8, sd=0.5)
# pairs(df); head(df)
lo <-
2009 Jan 21
1
X matrix deemed to be singular;
Hello,
i'm tring to use a cox's model for a survival analysis. I have a dataset,
this is a part:
VOD SESSO fonte_sct donor RT_CGY STATOBMT TEMPO morto
1 0 F mid related 1200
CP 65 1
2 0 M mid 1200
2RC 5281 0
3 0 M mid unrelated 1200
2010 Jul 22
1
How do I get rid of list elements where the value is NULL before applying rbind?
Here is the function that makes the data.frames in the list:
funweek <- function(df)
if (length(df$elapsed_time) > 5) {
res = fitdist(df$elapsed_time,"exp")
year = df$sale_year[1]
sample = df$sale_week[1]
mid = df$m_id[1]
estimate = res$estimate
sd = res$sd
samplesize = res$n
loglik = res$loglik
aic = res$aic
bic = res$bic
chisq =
2009 Jun 23
5
Merging Irregular Time Series With NAs
Hi
I have two irregular time series, which are of different lengths and being
and end at different times. For the common subset of time that they both
span, they should have the same values, but the values may occur at
slightly different time intervals. I am trying to "line up" the identical
values and reconcile them. I have merged the two series into a zoo object
which looks
2009 Jun 01
1
Generating a count variable
Dear All,
I am practicing data manipulation and I would like to generarte a count
variable. My data looks like this:
Country MID
1 NA
1 0
1 0
1 1
1 0
2 0
2 1
2 0
2 0
2 0
I would like to to generate a variable
2003 Dec 23
1
smbmount to Win2k dying after kernel/samba upgrades
Really odd problem that I'm having, and I'm totally clueless as to whats
causing it.
Scenario:
2 mounts from a W2K machine to a Linux box. The Win2k box gets powered
down overnight. Obviously during this, if i do a df it freezes because it
cant reach the drives. I used to be able to boot the machine back up in
the morning and it would see the drives again. Not anymore. The same