Displaying 20 results from an estimated 2000 matches similar to: "Problems with basic loop"
2008 Jun 09
1
Missing Data and applying
Hi All,
Newbie question that i'm sure is easy, but i can't seem to apply properly
I read in a datafram from a CSV file and i want to tell R that from coloum
"n_0" to "n_32" the value "-1" is missing data
i was looking at the
is.na(xx) <- c(..,...,) idea but i can't seem to apply it properly, can
anyone offer advice?
On a side issue while i'm
2011 May 29
2
[LLVMdev] Build error for llvm-2.9 on RHEL5
Hi,
I am getting the following build error while building llvm on RHEL5. Please
help me fix this:
gmake[2]: Leaving directory
`/rhel5pdi/home/asin/llvm_install/tools/llvm-config'
/rhel5pdi/home/asin/llvm_install/Release/bin/llvm-config: line 18: use:
command not found
/rhel5pdi/home/asin/llvm_install/Release/bin/llvm-config: line 19: use:
command not found
2011 May 30
0
[LLVMdev] Build error for llvm-2.9 on RHEL5
On Sun, May 29, 2011 at 4:37 PM, Arjun Singri <arjunsingri at gmail.com> wrote:
> Hi,
> I am getting the following build error while building llvm on RHEL5. Please
> help me fix this:
> gmake[2]: Leaving directory
> `/rhel5pdi/home/asin/llvm_install/tools/llvm-config'
> /rhel5pdi/home/asin/llvm_install/Release/bin/llvm-config: line 18: use:
> command not found
>
2008 Jun 17
1
Z test and proportions
Hi All,
I have a table based on ordial data and i want to compare proportions and
i've seen in the pwr package i can use
power.prop.test
however i want to find out what the sig. value is based on n1,n2,p1,p2 and
this package doesn't contain this..
Does anyone know of a package that does or is it a case of writting a
function specifically for this?
Many thanks in advance
[[alternative
1997 May 11
2
R-alpha: Logarithmic scales
Here are another three problems with logarithmic scales:
1) segments() does not work with logarithmic scales. I suggest to change
lines 962-973 in "plot.c":
for (i = 0; i < n; i++) {
if (FINITE(xt(x0[i%nx0])) && FINITE(yt(y0[i%ny0]))
&& FINITE(xt(x1[i%nx1])) && FINITE(yt(y1[i%ny1]))) {
GP->col = INTEGER(col)[i % ncol];
2007 Oct 17
1
Error message in GAM
Hello useRs!
I have % cover data for different plant species in 300 plots, and I use
the ARCSINE transformation (to deal with % cover data).
When I use a GLM I do not have any problem.
But when I am trying to use a GAM model using mgcv package, to account for
non-linearity I get an ?error message?.
I use the following model:
sp1.gam<-gam(asin(sqrt(0.01*SP1COVER))~
2001 Feb 15
1
cointegrating regression
Hi all,
Can I run a cointegrating regression, for example
delta Xt=a1(Yt-1-cXt-1)+E1t
and
delta Yt=-b1(Yt-1-cXt-1)+E2t
with R were
Xt and Yt are non stationary time series at t
a,b,c are parameters and E1t and E2t are error terms at t.
Yt-Xt is stationary
Any suggestions are welcome.
Best regards,
/fb
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing
2010 Dec 08
2
VARMA
Hi all,
I want to estimate parameters from a VARMA(p,q)-Modell.
The equations of the model or the model structures is given by:
Xt=beta1+beta2*Xt-1+beta3*Yt-1+epsilon1
Yt=beta4+beta5*Yt-1+espilon2
epsilon1 and espilon2 are white noise.
Xt is given by a vector of n elements e.g. (2, 4, 7, 9, …,n)’ and Yt is
given by a vector of n elements e.g. (4,9,12,17,…,n)’.
The lineVar from
2008 Apr 30
2
arcsine transformation
I have been trying to preform both a bartlett's test and an arcsine
transformation on some average percentage data. I've tried inputting it
different ways and I keep getting the same error message:
> head(workingdata)
DYAD BEFORE AFTER
1 BG-FL 4.606772 5.787520
2 BG-LL 5.467503 7.847395
3 AD-MV 5.333735 11.107380
4 MM-FL 5.578708 12.063500
5 MM-MV 2.037605 6.415303
6 MM-RM
2006 Mar 01
6
interrupted time series analysis using ARIMA models
Hi R-users,
I am using arima to fit a time series. Now I would like to include an intervention component "It (0 before intervention, 1 after)" using different types of impacts, that is, not only trying the simple abrupt permanent impact (yt = w It ) with the xreg option but also trying with a gradual permanent impact (yt= d * yt-1 + w * It ), following the filosophy of Box and Tiao
2006 May 11
2
greco-latin square
Hi,
I am analyzing a repeated-measures Greco-Latin Square with the aov command.
I am using aov to calculate the MSs and then picking by hand the appropriate
neumerator and denominator terms for the F tests.
The data are the following:
responseFinger
mapping.code Subject.n index middle ring
little
----------------------------------------------------------------------------
1 1
2012 Mar 19
3
Issue with asin()
Hello everyone,
I am working for a few days already on a basic algorithm, very common in
applied agronomy, that aims to determine the degree-days necessary for a
given individual to reach a given growth stade. The algorithm (and context)
is explained here: http://www.oardc.ohio-state.edu/gdd/glossary.htm , and
so I implemented my function in R as follows:
DD <- function(Tmin, Tmax, Tseuil,
2006 Oct 02
1
Trig.Rd typo (PR#9269)
Full_Name: Robin Hankin
Version: 2.4.0 RC
OS: MacOSX 10.4.7
Submission from: (NULL) (139.166.242.29)
The first cut line described in Trig.Rd for asin() is incorrect in the ascii
version of the manpage.
The Rd file reads:
For \code{asin()} and \code{acos()}, there are two cuts, both along
the real axis: \eqn{\left(-\infty, -1\right]}{\(-Inf, 1\]} and
Note the inconsistency between the
2011 Sep 22
1
Error in as.vector(data) optim() / fkf()
Dear R users,
When running the program below I receive the following error message:
fit <- optim(parm, objective, yt = tyield, hessian = TRUE)
Error in as.vector(data) :
no method for coercing this S4 class to a vector
I can't figure out what the problem is exactly. I imagine that it has
something to do with "tyield" being a matrix. Any help on explaining what's
going on
2011 Sep 02
2
misclassification rate
Hi users
I'm student who is struggling with basic R programming. Would you please
help me with this problem.
"My english is bad" I hope that my question is clear:
I have a matrix in wich there are two colmns( yp, yt)
Yp: predicted values from my model.
yt: true values ( my dependante variable y is a categorical;3 modalities
(0,1,2)
I don't know how to procede to calculate the
2011 Nov 12
1
State space model
Hi,
I'm trying to estimate the parameters of a state space model of the
following form
measurement eq:
z_t = a + b*y_t + eps_t
transition eq
y_t+h = (I -exp(-hL))theta + exp(-hL)y_t+ eta_{t+h}.
The problem is that the distribution of the innovations of the transition
equation depend on the previous value of the state variable.
To be exact: y_t|y_{t-1} ~N(mu, Q_t) where Q is a diagonal
2008 Aug 28
4
Help with shading a polygon below a segment of a curve (normal distribution)
Dear R users,
I still feel new to R so please apologize if I am doing something stupid
here. My use of the polygon() function produces a result that I cannot
comprehend: In a plot, I would like to shade the area below a normal
distribution. However, I do not want the entire area to be shaded, but
just the area on the right side of a vertical line that I draw through
the distribution (in
2012 Jun 01
1
trouble with append() in a for loop
Hello all,
*
*
I'm having some difficulty, and I think the problem is with how I'm using
append() nested inside a for loop. The data are:
y,x
237537.61,873
5007.148438,227
17705.77306,400
12396.64369,427
228703.4021,1173
350181.9752,1538
59967.79376,630
140322.7774,710
42650.07251,630
5382.858702,264
34405.82429,637
92261.34614,980
144927.1713,1094
362998.7355,1420
203313.6442,1070
2008 Oct 24
1
pwr.2p2n.test when the ratio of n1/n2 is known
Hi,
I am trying to do a power calculation for a difference in proportions
test where I want to estimate the sample size required. I know (well
estimate) that group one (n1) is 10% of the population and group 2 (n2)
is 90% of the population. I know the effect size (h). pwr.2p2n.test
only allows one variable to be left null whereas I would like both n1
and n2 to be determined where I know there
2005 Nov 09
2
problem with Running Locfit
Dear R users,
i am using locfit package developed by loader in R software, my problem is that as i am doing independont forecast using locfit object , i am able to do independont forecast for more than one years simultaniously. But when i am doing one year forecast(single) this code is giving following error...
"Warning message:
'newdata' had 1 rows but variable(s) found have 24