Displaying 9 results from an estimated 9 matches for "olssen".
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olesen
2011 Mar 10
2
R beginner - Error in as.vector(x, mode)
...3*trunk
model <- list(eqWeight, eqLength)
start.values <- c(a0=0, a1=0, a2=0, a3=0, b0=0, b1=0, b2=0, b3=0)
nlsystemfit("OLS", model, start.values, data = auto)
Error in as.vector(x, mode) :
cannot coerce type 'builtin' to vector of type 'any'
Kind regards,
Alex Olssen
2011 Sep 11
1
Emacs ESS finding all versions of R
...ed only the following lines
(require 'ess-site)
and
(require 'ess-site)
(setq inferior-R-program-name "C:\\Program Files\\R\\R-2.13\\bin\\R")
as well as many variations on the R path, including \, /, and going to
Rterm instead.
Any help would be greatly appreciated.
Thanks,
Alex Olssen
2011 Sep 16
1
xyplot remove ticks from top and right
...wing a graph using xyplot.
The axis labels only appear on the left and bottom axes - I used the option
xyplot(scale = list(alternating = 1))
However while the labels no longer appear on the top and right border
of the graph the ticks do! Any help would be greatly appreciated.
Kind regards,
Alex Olssen
2011 Mar 28
1
maximum likelihood accuracy - comparison with Stata
...-((t(e)%*%e)/(2*sigma2))
return(-logl)
}
p <- optim(c(0,0,0,2), ols.lf, method="BFGS", hessian=T, y=y, x=x)
OI <- solve(p$hessian)
se <- sqrt(diag(OI))
se <- se[1:3]
beta <- p$par[1:3]
results <- cbind(beta, se)
results
sigma2 <- p$par[4]
sigma2
Kind regards,
Alex Olssen
Motu Research
Wellington
New Zealand
2011 Sep 21
1
raster plot is empty
Dear R-help,
I have a problem plotting maps using the raster package when I use R
on my workplace server, but not when I use my own desktop. I suspect
the server version must be missing something and was wondering if
anyone would have any ideas.
The problem occurs after
library(raster)
f <- system.file("external/test.grd", package="raster")
r <- raster(f)
plot(f)
On
2011 Aug 12
2
Getting bootstrap statistic to work
Hi R-help,
I am trying to implement a nonparametric bootstrap to find the
standard errors of a simple statistics - the ratio of two scalars. I
am having difficulty getting boot() to work correctly. I code a
function to create the ratio of the relevant scalars. theta(data, i).
When I call the function for my data and every observation appearing
once, theta(test, c(1)), I get the correct
2011 Mar 14
0
nlysystemfit and loglikelihood values
...() can be used to
obtain loglikelihood values from linear systems estimated by
systemfit().
It seems to me that logLik() cannot be used for nlsystemfit(). Does
anyone know of any other packages that might let me obtain the
loglikelihood of a model estimated with nlsystemfit()?
Kind regards,
Alex Olssen
2011 May 28
1
Installing package rgdal
Dear R-helpers,
I am trying to install the package "rgdal" using the command
install.packages("rgdal")
in R. I get the following error
"Error: proj_api.h not found.
If the PROJ.4 library is installed in a non-standard location,
use --configure-args='--with-proj-include=/opt/local/include'
for example, replacing /opt/local/* with appropriate values
for your
2004 Sep 16
3
multiprocesor : bridge/router ?
hi,
does someone tried bridge and or router functionality of linux kernel on
multiprocessor system.
Does multiprocessor system increase network performance or give
ability to process higher traffic..
What about highest possible troughput someone have achieved ?
etc..
tia
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