Displaying 20 results from an estimated 4000 matches similar to: "Compare two time series, at each time step"
2011 Dec 01
3
Assign name to object for each iteration in a loop.
Hi R-users,
I'm trying to produce decompositions of a multiple time-series, grouped by a
factor (called "area"). I'm modifying the code in the STLperArea function of
package ndvits, as this function only plots produces stl plots, it does not
return the underlying data.
I want to extract the trend component of each decomposition
("x$time.series[,trend]), assign a name
2010 Oct 27
1
Fill in missing times in a timeseries with NA
Hi,
I have a irregularly spaced time series dataset, which reads in from a .csv.
I need to convert this to a regularly spaced time series by filling in
missing rows of data with NAs.
So my data, called NtuMot, looks like this (I've removed some of the
additional rows for simplicity)....
ELEID date_time height slope
1 2009-06-24 00:00:00
2012 Aug 03
1
SEM standardized path coefficients
Hello,
I have conducted an SEM in which the resultant standardized path coefficients are much higher than would be expected from the raw correlation matrix. To explore further, I stripped the model down to a simple bivariate relationship between two variables (NDVI, and species richness), where it's my understanding that the SEM's standardized path coefficient should equal the correlation
2011 Nov 30
1
RTisean executable problem in STLperArea
Hi,
I?m trying to use the STLperArea function in the ndvits package. I can run
the sample data (?SLPSAs_full?) without any problem. However, when I come to
run the function on my own data, I get the following message.
Waiting to confirm page change...
Error in .checkPath(path) : no TISEAN executables found in that directory.
Please set a proper TISEAN executables path using
2004 Jul 19
1
(no subject)
hello R experts,
my question is regarding arma modelling and specification.
in another older, statistics package , after determining stationarity, i would try to work out the number of ar and ma lags using an lm test.
to do this i would
1. regress my dependant variable on an intercept term then
2. use LM test for serial correlation, and finally
3. use the p value of the ols residuals to get
2009 May 20
1
stationarity tests
How can I make sure the residual signal, after subtracting the trend extracted through some technique, is actually trend-free ?
I would greatly appreciate any suggestion about some Stationarity tests.
I'd like to make sure I have got the difference between ACF and PACF right.
In the following I am citing some definitions. I would appreciate your thoughts.
ACF(k) estimates the correlation
2006 Jul 06
2
KPSS test
Hi,
Am I interpreting the results properly? Are my conclusions correct?
> KPSS.test(df)
---- ----
KPSS test
---- ----
Null hypotheses: Level stationarity and stationarity around a linear trend.
Alternative hypothesis: Unit root.
----
Statistic for the null hypothesis of
level stationarity: 1.089
Critical values:
0.10 0.05 0.025 0.01
0.347 0.463
2011 Feb 03
1
Double user name
I have two samba servers running Ubuntu 10.04 Samba Version 3.4.7
One server acts as domain controller and stores user ids in a .tdb
Somehow I've ended up with a duplicate user name.
On the Domain Controller
# pdbedit -w -L|grep debbie
debbie:1005:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:84DEC6FE3B018B0FB977EDDF5009742C:[U
]:LCT-4D4B086F:
On the other Server running winbind I get
#
2006 Jul 06
1
Access values in kpssstat-class
Hi,
How can I access the Values stored in kpssstat-class given by KPSS.test function and store it in a variable.
For example:
>x <- rnorm(1000)
>test <- KPSS.test(ts(x))
>test
---- ----
KPSS test
---- ----
Null hypotheses: Level stationarity and stationarity around a linear trend.
Alternative hypothesis: Unit root.
----
Statistic for the null
2019 May 27
0
opus-1.3.1 patch for ARM Cortex-M4F (single precision)
The patch prevents KEIL MDK compile warnings, like:
warning: #1035-d: single-precision operand implicitly converted to
double-precision
Actually ARM Cortex-M4F has only a *single precision* (float) FPU.
It's suit for all platforms.
See the comment at the begin of patch file.
Sincerely
Forrest Zhang
-------------- next part --------------
Specify the floating point constant with single
2008 Jan 10
1
question regarding kpss tests from urca, uroot and tseries packages
Hi R users!
I've come across using kpss tests for time series analysis and i have a question that troubles me since i don't have much experience with time series and the mathematical part underlining it.
x<-c(253, 252, 275, 275, 272, 254, 272, 252, 249, 300, 244,
258, 255, 285, 301, 278, 279, 304, 275, 276, 313, 292, 302,
322, 281, 298, 305, 295, 286, 327, 286, 270, 289, 293, 287,
2019 Feb 24
0
Samba Won't start after upgrading Operating system
Top posting...
While I don't really see any details that indicate this is the problem, systemd-resolved causes the packaged 18.04 samba to fail to start [at least in a full AD setup.]
That's because system has a full DNS resolver, and Samba also has it's own DNS resolver. When they both try to start on the same port, the first running wins [systemd] and Samba exits.
Since you're
2019 Feb 24
0
Samba Won't start after upgrading Operating system
On Sun, 24 Feb 2019 13:08:07 -0500
Robert Steinmetz <rob at steinmetznet.com> wrote:
> Rowland Penny via samba wrote:
> On Sat, 23 Feb 2019 19:55:03 -0500
> Robert Steinmetz via samba <samba at lists.samba.org> wrote:
>
> I ungraded my Linux Operating system from Ubuntu 16.04 LTS to 8.04 LTS
>
> Samba will not start after an upgrade to 18.04. My samba is running
2012 Oct 12
1
ks.test not working?
Hi,
I am performing GEV analysis on temperature/precipitation data and want to use the ks.boot function but I am unsure of how to implement it using the pgev distribution.
For example:
ks.test(data,pgev,shape,location,scale)
ks.boot(data,(distribution parameters?),alternative="pgev",nboots=1000)
Any advice? Apologies in advance if I have used the wrong email address.
Regards,
Louise
2012 Oct 16
2
gam (mgcv) problem: Error in while (mean(ldxx/(ldxx + ldss)) > 0.4) { :, missing value where TRUE/FALSE needed
Hi All,
I'm running into a problem with GAM (in the MGCV package). When I try
to estimate the model, I get the following error message:
1> fit <-
gam(ndvi~s(rain)+s(temp)+s(rainl1)+s(rainl2)+s(rainxY)+s(rainl1xY)+s(rainl2xY)+s(tempxY),
data=dsub, weights=wvec)
Error in while (mean(ldxx/(ldxx + ldss)) > 0.4) { :
missing value where TRUE/FALSE needed
Using
2010 Oct 06
1
R getting slower until it breaks...
Hello R-users,
I'm currently facing a pretty hard problem which I'm hopping you'll be able to help me with. I'm using R to create images. That alone is not the problem, the problem is that I'm using R to create 168 000 images... My code (which is given below) use different package (raster and rgdal) to import a image (size 20gig) and divide it into 168 000 pictures that are
2019 Feb 24
1
Samba Won't start after upgrading Operating system
Thanks for the response. I think found and fixed the problem, but I
need to do some more testing tomorrow. It seems that the
"handle_name_resolve_order: WARNING: Ignoring invalid list value
'hosts' for parameter 'name resolve order'"
is not really a warning and it causes testparm to stop processing the
smb.conf. I think that is also what caused the daemons to fail.
2011 Jun 15
1
Legend in lattice
Dear all, I have been working in a plot based on figure 5.6 of the Lattice book (http://lmdvr.r-forge.r-project.org/figures/figures.html).
I
have already modified it to include the size of the circles as another
variable, but I would like to modify the legend to show it (like they do
it in http://www.jstatsoft.org/v15/i05/paper). I have divided my variable in intervals:
DATA$s_Shape_2 <-
2019 Feb 24
4
Samba Won't start after upgrading Operating system
I ungraded my Linux Operating system from Ubuntu 16.04 LTS to 8.04 LTS
Samba will not start after an upgrade to 18.04. My samba is running as
an NT style member server server with smbd nmbd and winbindd all
running. None of them will start.
It worked this morning.
This morning it was running Version 4.3.11-Ubuntu
This afternoon after the upgrade it's Version 4.7.6-Ubuntu
The logs in
2004 Mar 20
2
labels on axis(4) and adaptation of legend to size of the plot
Hi weekend R helpers,
*Is it possible to get a ylabel on the right hand side axis ==> axis(4)?
Thankx,
Jan
opar <- par(mfrow = c(2,1))
plot(ts.Origi[,1],ylab='NDII', main=name)
# Add the legend text in the right order
legend.txt <- c("NDII", "Inverse KBDI")
legend(2001.8,0.29, legend.txt,col=c(1,2), lty=1)