Please keep the conversation on the list, Esra... I don't do personal
tutoring online, and others may answer your questions sooner and better
than I can.
Some comments below:
On Sat, 20 Dec 2014, Esra Ulasan wrote:
Hello,
Thank you very much for your concern. I have these codes for
Thanks Joshua,
Would you kindly explain if I have an xts array with different dates how I
change all dates to 1970-01-01 without touching the time ? I tried with
indexFormat without success. indexFormat(s) - 1970-01-01 %H:%M:%S . when I
plot a graph it still shows original dates.
ce
On Sun, Dec 21, 2014 at 7:59 AM, ce zadi...@excite.com wrote:
Thanks Joshua,
Would you kindly explain if I have an xts array with different dates how I
change all dates to 1970-01-01 without touching the time ? I tried with
indexFormat without success. indexFormat(s) - 1970-01-01 %H:%M:%S
Apologies for re-posting. Any suggestions for clipping/subsetting panel
data (ID=US counties, Time=Week)? I would like start the data to start on
the first Monday and end on the last Sunday for the time period 2026-2045.
Thanks and apologies again.
Sincerely,
Shouro
On Fri, Dec 19, 2014 at
Jane,
My sincere apologies; I don't know what I was seeing/thinking -- your
original post was correct. Namely, you should download and install:
http://ftp.sunet.se/pub/lang/CRAN/bin/macosx/R-3.1.2-snowleopard.pkg
(although, I am use to using the main mirror
Dear Sir/Madam
I am trying to get the Maximum Likelihood Estimation of a parameter in a
probability mass function. The problem is my pmf which includes a summation and
one integral. it is not similar to other known pdfs or pmfs such as normal,
exponential, poisson, .
Does anybody know
Thanks Tom!
One more quick question, regarding choosing mavericks.pkg or snowleopard.pkg.
Will mavericks work for me though I have OS X Lion 10.7.5? I thought I had to
choose snowleopard but are still an unexperienced mac user and have really no
idea.
Just want to dubble check before I run the
Dear All,
I need to do a mediation analysis with survival data (using Cox model).
- The independent variable is categorical (with 3 levels, coded as 1, 2,
3).
- Mediator variable is a 1-10 score variable (derived from a continuous
variable).
I must confess, I am a Stata user.
Thanks, yes I found them in my local installation, just as you said. In
case anyone else wants to get them programatically, here's what I did
(on windows 7, R version 3.1.1):
# navigate to local R installation dir
setwd(system.file())
setwd('../../doc')
# get all news files
news_files -
Hi,
You can try a projected gradient approach, which is implemented in the spg()
function in the BB package. You have to provide a projection function which
will take an infeasible matrix as input and will give a feasible (i.e.
positive-definite) matrix as output. This kind of matrix
Your 'x' has length 2, so x[[3]] cannot be calculated ('subscript out of
bounds' is what I get). You can check for this with length(x)3.
In general, you want to be more precise: 'does not have a value', 'is
NULL', and 'is empty' are not synonymous. I'm not sure what 'does not have
a value'
On Sun, Dec 21, 2014 at 12:09 AM, ce zadi...@excite.com wrote:
Dear all,
I want to create a time series object from 00:00:00 to 23:59:00 without dates
?
I can't figure it out with xts ?
This uses zoo, rather than xts:
library(zoo)
library(chron)
tt - seq(times(00:00:00),
Dear Sacha,
Simply write a function that takes a data set and index vector as arguments,
say statistic(data, index), and have it compute and return either eta^2 or V
depending upon the application. Use the function myCor() in the previous
example as a model.
Best,
John
-Original
Dear Pari
On 21 December 2014 at 06:59, pari hesabi statistic...@hotmail.com wrote:
I am trying to get the Maximum Likelihood Estimation of a parameter
in a probability mass function. The problem is my pmf which includes
a summation and one integral. it is not similar to other known pdfs or
On Dec 19, 2014, at 9:35 AM, Henrik Bengtsson wrote:
On Fri, Dec 19, 2014 at 8:48 AM, John Kane jrkrid...@inbox.com wrote:
Hi,
It looks like you are replying to some phantom. Is your correspondent
actully on R-help?
This most likely happens because OP posted the message via Nabble
Thanks for your response Tom, now I have successfully upgraded and my affy
package problem seems to be is solved with this latest version of R and latest
version of Bioconductor.
Thanks!
/Jane
---
Jane Synnergren, PhD
Dear Professor FOX,
I really thank you lots for all your precisions. One last precision, now if I
want tot calculate the BCa bootstrap CIs for the Cramer's V and the Eta-squared.
## Read in the data file, using headers and Tab separator test =
read.table(file.choose(), header = TRUE, sep = \t)
Dear UseRs,
A point was plotted by the following command
plot(2,4,ylim=c(0,10),xlim=c(0,5))
how to divide the space around the plotted point into six regions each of 60
degree as shown in the Figure 2a) in the following link
http://infolab.usc.edu/csci599/Fall2007/papers/b-2.pdf.
Thankyou very
# A general approach to lines on a plot is provided by segments().
# However in this special case you can use abline().
# You have to take care though that your aspect ratio for the
# plot is exactly 1. Therefore you have to set the asp parameter.
p - c(2,4)
plot(p[1], p[2], xlim=c(0,5),
You may try this:
get.coords.circle - function(x0, y0, r, len, rot){
+ by - seq(from=-pi, to=pi, length.out=len)
+ x - r*cos(by+rot) + x0
+ y - r*sin(by+rot) + y0
+ coords - cbind(x,y)
+ coords[!duplicated(coords),]
+ }
xtms - get.coords.circle(x0=2, y0=4, r=2, len=7, rot=0)
xtms1 -
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