Displaying 20 results from an estimated 500 matches similar to: "Fitting polynomial (power greater than 2)"
2003 Oct 23
2
GIS re-mapping / polygon overlap
In Germany the Unemployment Agency uses a sectioning of the german map that
is different from the usual Administrative Boundaries.
Some demographic data are available in Administrative Boundaries only, some
in Unemployment Boundaries only.
I would like to generate estimates in one boundary system of data availabe
in the other boundary system, and would appreciate advice concerning the
following
2011 Dec 07
1
removing specified length of text after a period in dataframe of char's
Dear all,
I'm trying to remove some text after the period (a decimal point) in
the data frame 'hi', below. This is one step in formatting a table. So
I would like e.g.
"2.0" to become "2"
and "5.3" to be "5.3",
where the variable digordered contains the number of digits after the
decimal that I would like to display, in the same order in which
2010 Mar 27
1
R runs in a usual way, but simulations are not performed
Dear addresses, I need perform a batch of 10 000 simulations for each of
4 options considered. (The idea is to obtain the parameter estimates in
a heteroskedastic linear regression model - with additive or mixed
heteroskedasticity - via the Kenward-Roger small-sample adjusted
covariance matrix of disturbances). For this purpose I wrote an R
program which would capture all possible options (true
2012 Apr 11
1
Problem with effects package
> sessionInfo()
R version 2.15.0 (2012-03-30)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] grid datasets splines utils stats
[6] graphics grDevices methods base
other attached packages:
[1] effects_2.1-0 colorspace_1.1-1
[3] nnet_7.3-1
2003 Nov 05
1
Estimate hazard function from right-censored data only
Dear All,
I would like to ask if it is possible to estimate a hazard function
using the muhaz command when all the data is right-censored. My data
has information of the number of weeks people has been unemployed but
all of them are unemployed at the date of the survey, that is, I cannot
observed when the individuals leave the unemployment state.
I appreciate your help,
Best,
Monica L.
2008 Oct 27
3
counting run lengths
Hello,
I have the following problem.
I am running simulations on possible states of a set of agents
(1=employed, 0=unemployed).
I store these simulated time series in a matrix like the following,
where rows indicates time periods, columns the number of agents (4
agents and 8 periods in this case):
Atr=[
1 1 1 1
1 1 0 1
1 1 0 1
1 1 0 1
0 1 0 1
0
2011 Nov 04
1
survfit function?
Hi, I
am working on fitting a proportional hazard model to predict the
probability of default for mortgage loans. I have a question regarding
survfit function. My
historical data set is a pool of loans with monthly observed default
status for the next 24 months. The data is left truncated (delayed entry
to observation window after the loan is opened) and right censored. I
would like to
2009 May 20
2
How to load data from Statistics Canada
We would like to load data from Statistics Canada
(http://www.statcan.gc.ca/) using R,
for example, Employment and unemployment rates.
It seems to me that the tables are displayed in HTML.
I was wondering if you know how to load these tables. Thanks,
-james
2012 Oct 03
2
Error in if (any(ch)) { : missing value where TRUE/FALSE needed
Can someone please help with the error message below?
thanks!
Start: AIC=-Inf
value ~ 1 + Core_CPI__ + GDP_change + Unemployment + housing +
interest + S_P + d1 + d2 + d3
Error in if (any(ch)) { : missing value where TRUE/FALSE needed
In addition: Warning message:
attempting model selection on an essentially perfect fit is nonsense
2009 Oct 29
1
How to turn individual consecutive information into survival objects?
Dear R List,
I have a dataset with the following structure:
"""personal_id, p_0, p_1, p_2, .... , p_36, p_37
1, NA, 1, 4, .... , 1, NA
2, NA, NA, NA, .... , 4, NA
.
.
.
6020, NA, 3, 3, ...., NA, NA
6021, NA, 2, 2, ...., 4, NA
"""
I used some made-up data. It is just meant to show the structure of the dataset.
The variables of interest are p_0, ... p_37.
2012 Sep 17
2
Problem with Stationary Bootstrap
Dear R experts,
I'm running the following stationary bootstrap programming to find the parameters estimate of a linear model:
X<-runif(10,0,10)
Y<-2+3*X
a<-data.frame(X,Y)
coef<-function(fit){
fit <- lm(Y~X,data=a)
return(coef(fit))
}
result<- tsboot(a,statistic=coef(fit),R = 10,n.sim = NROW(a),sim = "geom",orig.t = TRUE)
Unfortunately, I got this
2009 Aug 01
2
xyplot: superpose 2 time series with different time intervals
I could use some advice regarding xyplot.
I've got 2 time series. Both cover approximately the same period of
time (ie, 1940 to 2009). But one series has annual data and the other
has monthly data. One refers to university enrollment; the other to
unemployment rates. Both are currently in the same data frame.
I'd like to use the monthly times series as a light grayscale
background for a
2012 Oct 09
1
why does R stepAIC keep unsignificant variables?
Ran a bunch of variables in R and the final result of StepAIC is as below:
Why are the first 5 variables kept in the stepwise result?? Are the last
4 variables finally chosen after Stepwise? Thanks
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) 1.315e-01 2.687e-01 0.490 0.63611
Core_CPI__ 1.290e-02 7.496e-03 1.721 0.11927
GDP_change -3.482e-03 2.075e-03 -1.678 0.12767
2009 Jul 10
1
row data manipulation in data frame
R users,
I am a beginner in R. I have a time series data on various macro variables
like GDP, unemployment rate, consumer spending, imports, exports etc. I am
interested in calculating year over year growth rate for each of those
variables. Is there any simple function in R for carrying out such repeated
operations.
I would like to carry out growth rate between two consecutive yearly row
data
2008 Oct 14
1
Labour Statistics
Hi everyone,
This is not so much of an R question as a statistics question. I
currently work for the largest pre employment screening company in
Canada. Upper management has noticed that noticed that usually a month
or so before any big kind of economic shock happens, that our incoming
files (requests for a background check) jump up or down.
As the company statistician, they've asked me
2006 Jun 28
2
hash value won''t increment with =+ operator
I have a database of bookmarks and tags, and want to count the number
of bookmarks each tag is assigned to, for example: user "tyler" has
the tag "concerts" on 15 out of his 30 bookmarks. This code:
hash = Hash.new("0"); @user.tags.each do |t|
@user.bookmarks.each do |b|
x = 0
if b.tags.include?(t) then
hash[b.id] =+ 1
puts "hash is #{hash}
2009 Jul 31
1
superpose 2 time series with different time intervals
I could use some advice.
I've got 2 time series. Both cover approximately the same period of
time (ie, 1940 to 2009). But one series has annual data and the other
has monthly data. One refers to university enrollment; the other to
unemployment rates. Both are currently in the same data frame.
I'd like to use the monthly times series as a light grayscale
background for a plot of the
2012 Feb 07
1
survfit is too slow! Looking for an alternative
Hi All
I found survfit function was very slow for a large
dataset and I am looking for an alternative way to quickly get the predicted
survival probabilities.
My
historical data set is a pool of loans with monthly observed default status for
24 months. I would like to fit the proportional hazard model with time varying
covariate such as unemployment rates and time constant variables at loan
2009 Jan 07
1
troubles performing Moran.I test
dear R users,
I have troubles performing Moran.I test as suggested on
http://www.ats.ucla.edu/stat/r/faq/morans_i.htm
my spatial data are longitude and lattitide of communities. The
calculation of the inverse distance matrix according to the homepage
(using my data)
datAL <- read.csv2("C:\\Konvergenz AL.csv", header=T)
ALdist <- as.matrix(dist(cbind(datAL$L?nge,
2010 Mar 02
1
Reading data file with both fixed and tab-delimited fields
Hello R wizards,
What is the best way to read a data file containing both fixed-width and
tab-delimited files? (More detail follows.)
_*Details:*_
The U.S. Bureau of Labor Statistics provides local area unemployment
statistics at ftp://ftp.bls.gov/pub/time.series/la/, and the data are
documented in the file la.txt
<ftp://ftp.bls.gov/pub/time.series/la/la.txt>. Each data file has five