Displaying 20 results from an estimated 8000 matches similar to: "using time series"
2013 Apr 26
2
Can a column of a list be called?
Hello Everyone,
I would like to know if I can call one of the columns of a list, to use it
as a variable in a function.
Thanks in advance for any advice!
Jana
--
Jana Makedonska,
B.Sc. Biology, Universite Paul Sabatier Toulouse III
M.Sc. Paleontology, Paleobiology and Phylogeny, Universite de Montpellier II
Ph.D. candidate in Physical Anthropology and Part-time lecturer
Department of
2013 Apr 26
2
Help with dataEllipse function
Hi Everyone,
I am working with the R function "dataEllipse". I plot the 95% confidence
ellipses for several different samples in the same plot and I color-code
the ellipse of each sample, but I do not know how to specify a different
line pattern for each ellipse. I can only modify the pattern for all
ellipses with the "lty" argument. Any help will be highly appreciated.
2014 Oct 28
2
basic configuratio error
Hello list,
After many hours I still fail to configure properly dovecot as the LDA with
opensmtpd, for system users only.
I don't want pop at all, jus lmtp and imap, but still haven't stripped it.
Here is the info, thanks in advance for your response:
=====
# doveconf -n
# 2.2.14: /etc/dovecot/dovecot.conf
# OS: OpenBSD 5.6 i386
auth_verbose = yes
auth_verbose_passwords = yes
2011 Dec 15
1
Inquiry about matrix pooling
Dear R-users,
I am a relatively new R user and I have a simple question. Is there a
command attached to a R function, which performs matrix pooling?
Thanks in advance,
Jana
--
--
"The world is full of mysteries. Life is one. The curious limitations of
finite minds are another."(J.B.S. Haldane, The Causes of Evolution)
Jana Makedonska, M.Sc.
Ph.D. candidate/ Part-time lecturer
2011 Mar 31
2
how to do t-test in r for difference of mean
I am trying to do t-test to test whether the mean of one one column of the
data frame is greater then another. please help me out.
--
Arkajyoti Jana
M. Phil/ 2nd semester
Centre for Economic Studies and planning
School of Social Sciences
Jawaharlal Nehru University
New Delhi-67
[[alternative HTML version deleted]]
2012 May 19
2
how to predict/forecast missing values in time series ?
i have time series as
1.3578511
0.5119648
1.3189847
0.9214787
1.2272616
4.9167998
1.2272616
1.2272616
0.8854192
2.3386331
1.6132899
0.2030302
0.8426226
1.2277843
NA
1.3189847
1.3578511
0.8530141
2.3386331
1.0541099
0.7747481
0.5764672
1.3189847
1.2160533
1.2272616
0.6715839
0.9651803
1.6132899
1.2006974
0.6875047
1.3245534
1.2006974
0.8221709
1.3101684
1.6132899
1.6132899
1.2006974
1.3189847
2002 Mar 15
1
predicting financial time series
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Hash: SHA1
What are the best tools (models within R) for use in predicting stock
market trading values? Currently I'm using the smooth.spline but are there
any others used in practice?
Do I find the mathematical formulations of R-functions somewhere (I now I
could deduct it from the source code algorithms but ...)? Of the
smooth.spline() for example?
Thank
2011 Oct 06
1
Urgent help needed for honours project - breaks between races in one year
Hi to anyone who is willing to help,
I have a csv. file which has 1999 horses as the rows and the age(in years)
of the horse at each race as columns. Ive read this file into R and called
it 'horses'.
Im trying to find the longest break between each race in the horse's first
year of racing. I already have a numeric called 'age.first' which is the age
at which each horse had its
2009 Oct 20
2
LDA Precdict - Seems to be predicting on the Training Data
When I import a simple dataset, run LDA, and then try to use the model to
forecast out of sample data, I get a forecast for the training set not the
out of sample set. Others have posted this question, but I do not see the
answers to their posts.
Here is some sample data:
Date Names v1 v2 v3 c1
1/31/2009 Name1 0.714472361 0.902552278 0.783353694 a
1/31/2009 Name2 0.512158919 0.770451596
2023 Aug 12
1
time series transformation....
dear members,
I have a heteroscedastic time series which I want to transform to make it homoscedastic by a box cox transformation. I am using Otexts by RJ hyndman and George Athanopolous as my textbook. They discuss transformation and also say the fpp3 and the fable package automatically back transforms the point forecast. they also discuss the process which I find to be
2006 Apr 18
1
gettin erro with xapian binidngs 0.9.5
hi
i had created an indexer n searcher in php in 0.9.4 and it was workin fine.
now i installed 0.9.5 but i m getting following error
*Fatal error*: No matching function for overloaded 'Document_add_posting' in
*/home/jana/public_html/final_file_search/file_indexer.php* on line *48
*this is the fragment of my code where i m gettin the error.
2012 Jan 18
1
forecasting a time series
Couldn't find this in the archives. I'm fitting a series of historical
weather-related data, but would like to use the latest values to forecast.
So let's say that I'm using 1970-2000 to fit a model (using fourier terms
and arima/auto.arima), but now would like to use the last X values to
predict tomorrow's weather. I'm at a loss. All the functions I've come
across
2012 Feb 29
2
How to extract numerical values from time series forecast
hi all. i'm busy with some time series data, starting from an earlier period
until the current day.
i have created a time series forecast taking into account the entire data
from the earlier date up until 2007, using the "forecast" package for R. i
am comparing this forecasted data to the actual/ observed data (which starts
from the earlier date up until the current day).
my
2007 Dec 04
1
Best forecasting methods with Time Series ?
Hello,
In order to do a future forecast based on my past Time Series data sets
(salespricesproduct1, salespricesproduct2, etc..), I used arima() functions
with different parameter combinations which give the smallest AIC. I also
used auto.arima() which finds the parameters with the smallest AICs. But
unfortuanetly I could not get satisfactory forecast() results, even
sometimes catastrophic
2005 Sep 26
1
RECYCLER and recycler bin
Hello,
I have recognized a pretty annoying thing with my Samba-Server:
My smb.conf is set, that deletet files go into the dir
".Papierkorb". It works well one one Client, but when the user deletes Files on the other client, a dir called "RECYCLER" appears with the file and some .ini files in it. Is there a way to solve this?
Both clients are WinXP, I'm using Samba
2018 Jun 01
2
Time-series moving average question
My guess would be that if you inspect the output from
ma(dat3[1:28], order=3)
you will find some NAs in it. And then forecast() doesn't like NAs.
But I can't check, because I can't find the ma() and forecast() functions. I assume they come from some package you installed; it would be helpful to say which package.
-Don
--
Don MacQueen
Lawrence Livermore National Laboratory
7000
2018 Jun 01
0
Time-series moving average question
Hello Don, thank you for your response. I appreciate your help.
I am using the forecast package, originally I found it following a forecasting example on bloggers.com
https://www.r-bloggers.com/time-series-analysis-using-r-forecast-package/
And subsequently located the complete pdf https://cran.r-project.org/web/packages/forecast/forecast.pdf
Since I created this practice data using the
2012 Jan 07
1
using deltat parameter in time series in HoltWinters prediction
Hi.
I have to forecast a time series of a Internet network traffic bitrate.
The data are in file
http://www.forumaltavilla.it/joomla/datitesi/dati.datand the sampling
time is every 0.05 seconds.
Now, i want to use HoltWinters forecasting. This is my script.
dt=1.58443823e-9 #0.05 seconds in years
dati.ts=ts(scan("dati.dat"),start=0,deltat=dt)
model=HoltWinters(dati.ts)
2018 Jun 01
2
Time-series moving average question
You are right that there are no NAs in the practice data. But there are NAs in the moving average data.
To see this, break your work into two separate steps, like this:
tnr.ma <- ma(dat3[1:28], order=3)
TNR_moving_average <- forecast(tnr.ma, h=8)
I think you will find that the warning comes from the second step.
Print tnr.ma and you will see some NAs.
-Don
--
Don MacQueen
Lawrence
2007 Nov 26
3
Time Series Issues, Stationarity ..
Hello,
I am very new to R and Time Series. I need some help including R codes
about the following issues. I' ll really appreciate any number of
answers...
# I have a time series data composed of 24 values:
myinput = c(n1,n2...,n24);
# In order to make a forecasting a, I use the following codes
result1 = arima(ts(myinput),order = c(p,d,q),seasonal = list(order=c(P,D,Q)))
result2 =