Displaying 20 results from an estimated 140 matches similar to: "Using the R predict function to forecast a model fit with auto.arima function"
2012 May 04
1
Problems Exporting R Output to an xls file need help
Hello R users,
I want to export to an xls or .csv some predictions I produced with the
auto.arima and forecast functions.
A detail of all my work is presented below. I loaded a package called
dataframes2xls and tried to use the function write.xls without any success.
Can anybody help me figure this out? How could I get R to export the output
to an xls file?
Any help will be greatly
2009 Jul 15
1
loading multiple .Rdata and preserving variable names
Dear R-users,
I need to load outputs from multiple previous calculations into one R
session for comparison and (cross-)analysis. The previous calculations are
stored in different directories in .Rdata files (I don't know if this is the
best storage for later usage, but the previous project could be recalculated
and saved into different format, if needed, potentially.)
I can load consequently
2008 May 19
1
three-dimensional (volumetric) estimation from x,y,z points
Dear all,
I have a set of x,y,z points obtained from
a lizard species and now I would like to
estimate the three-dimensional use of space
for this species. I know that 2D area I can
estimate using adehabitat packages, but
I don´t know how to estimate the volumetric
space.
Any help are welcome.
Miltinho
Brazil
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2008 May 19
0
Re : three-dimensional (volumetric) estimation from x,y,z
You may use the "geometry" package and the "convhulln" function.
This will allow you to compute the convex hull volume of a set of
points in a n-dimensional space.
--
Guilhaumon Fran?ois
Laboratoire "Ecosyst?mes Lagunaires"
UMR 5119 cc 93 Bat 24
Universit? Montpellier II
34 095 Montpellier
France
http://www.ecolag.univ-montp2.fr
2010 Sep 22
1
agregar valores a una tablea de SQL
Hola a todos
Estoy aprendiendo a trabajar con el paquete de RMySQL, y a la vez con bases SQL,
así que a lo mejor no es tan complicado.
Quiero agregar valores, que genero en R, a una tabla de SQL más o menos la idea
es:
> ssql<-"INSERT INTO tabla1 (variableA, variableB) VALUES
(''valor1'',''valor2'')"
> dbSendQuery(conec, ssql)
pero
2018 Mar 28
0
netCDF to GeoTIFF by layer in r
Hi Ahmed,
When reading from a ncdf file you can use the 'varname', 'lvar' and 'level' arguments - see the 'Details' section in the docs
https://www.rdocumentation.org/packages/raster/versions/2.6-7/topics/raster <https://www.rdocumentation.org/packages/raster/versions/2.6-7/topics/raster>
We can't tell what is in the ncdf file from what you report other
2018 Mar 28
2
Fwd: netCDF to GeoTIFF by layer in r
Hi
I have a netCDF file of volumetric soil water content at four
different soil layers and want to convert each soil layer in the
netCDF file to a GeoTIFF layer. This code converts the netCDF file to
one GeoTIFF layer, i.e. unclear which soil depth.
file.nc <- "C:/Soil_Weather_data/Agro/VMC21/VMC21.nc"
file.tiff <- "C:/Soil_Weather_data/Agro /VMC21/VMC21"
importnetcdf
2011 Mar 27
1
Bootstrap 95% confidence intervals for splines
There appear to be reports in the literature that transform continuous
independent variablea by the use of splines, e.g., assume the dependent
variable is hot dogs eaten per week (HD) and the independent variable is
waistline (WL), a normal linear regression model would be:
nonconfusing_regression <- lm(HD ~ WL)
One might use a spline,
confusion_inducing_regression_with_spline <- lm(HD
2011 Oct 18
1
nuisance variables
*Dear experts,*
Please excuse me for disturbing... Right now I am struggling with GLM a
bit... Would you be so kind to provide me a solution on using nuisance
variables. The problem is that I have data on Depression (volumetric
measurements of different brain regions) and I want to include age, gender
and education as nuisance parameters in the model. In the other words I
would like to model the
2008 Feb 22
0
Postfix on one host/Dovecot (mailboxes) on another - How?
Hi,
I'm using Dovecot 1.0.5 on OpenSUSE 10.3.
I run postfix/amavis/clamav on one host, postfix uses LDAP to identify whether or not users exist. On this same machine I was running dovecot, so I used dovecot LDA on Postfix master.cf (as mentioned on http://heinous.org/wiki/Virtual_Domains,_Postfix,_Dovecot_LDA,_and_LDAP#Postfix).
Now I want to run Dovecot on another machine, how should I
2002 Mar 12
0
Vis5D interface package
Greetings,
Summary: Has anyone else started a package (or have code) with the
capability to write Vis5D-readable netCDF files containing
irregularly-spaced data?
I've recently put together what might be the beginnings of a (GPL'ed) R
interface package to the Vis5D volumetric visualization program
(http://vis5d.sourceforge.net). Vis5D is commonly used in the
atmospheric science and
2012 Feb 20
4
Workarounds for Splinter Cell: Conviction
Hi
I've been able to get Splinter Cell: Conviction running quite smooth on my system, and I just want to share with any others what I had to do to get it all working.
A few days ago, I submitted a testreport in AppDB, but it was rejected with the info that I was testing a patched version of wine. Which is true, because vanilla wine just crashes with the exception as tested by other people.
2000 Jun 03
5
Monty on holiday
Hi folks,
My wife and I are taking a long weekend to celibrate our anniversary. I won't
be around again until Wednesday to answer email or do anything else on Vorbis.
Yeah, I know, I usually answer my email once a month anyway (so likely no one
would notice me being gone), but just so folks know if anything really juicy
comes up :-)
I'll be merging my latest branch with mainline
2011 Oct 04
0
how to make ARFIMA forecast by using r?
please help..
I have estimate the value of parameter for AR,MA and fractional d.but I have
problem on having the right command for forecasting ARFIMA model.please
help......
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2009 Jun 23
1
Forecast GARCH model
Hi,
I've fitted a GARCH(1,1) for the residuals of my time serie (X).
X is an ARMA(1,1) process.
Now I want to do a n-step forecast for X, knowing these processes. How can I
do this?
I know that there's a command:
predict() for ARIMA processes and so on, but what about GARCH?
I've got:
arma=arima(x, order=c(1,0,1))
(...)
garch11<-garch(residuals(x),order = c(1, 1))
2010 Jun 22
1
Applying forecast functions to columns in a data frame
Hey,
I have a list of 30 odd time-series (products) in columns of a data-frame.
I want to apply time-series forecasting functions across all the columns of
the data-frame in order to determine which is the best model to use.
How do I go about this?
Phani
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2011 Feb 18
0
Is the Diebold Mariano Test in forecast package adjusted?
Hello
I would like to know if the Diebold Mariano Test in the forecast Package is adjusted to small samples (as Harvey, Leybourne, Newbold suggest) If not, how can I do that manually?
Paka
2012 Nov 13
0
Forecast Package: Draw two lines on the same plot
Hi,
How is it possible to draw to different data on the same graph using
forecast package? The first is the observed data and the second set is the
fitted values. I want the observed data to show as solid line while the
fitted values to show as dashed or dotted line.
regards
Leo
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2010 May 06
0
forecast using arfima
Hello!
I used the function fracdiff(dn, nar=1, nma=1) and got the values of d, ar
and ma coefficients.
Also another coefficients were get under fdGPH, fdSperio.
How could I get the forecasts in these models?
Thank you very much
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2012 Sep 17
0
arima forecast without the first order of auto-regressor
Hi, I want to predict using airma, but I want to predict using t-2 or t-3,
instead of t-1
right now the arima() function doesn't allow me to do that, it will alwasy
return with variable t-1 ,
what is the way to skip that variable?
thanks ®ards
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