Displaying 20 results from an estimated 718 matches for "parans".
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params
2008 Mar 07
0
A new version of paran is available
Horn's parallel analysis method of deciding how many factors to retain has
been implemented in R in the paran package. This update to paran adds an
option to produce a graph of the analysis along the lines of what Horn
presented in his seminal 1965 paper. It also makes a few minor improvements
to the formatting of the program's output.
Alexis Dinno
2007 Aug 01
1
Is it possible to catch ogg streaming data and write it in other format such as WAV in icecast server?
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2006 Nov 22
4
data in form of a date
Dear all,
I often use dates and times in analyses. I just can't figure out how to
format my date or time column in R. So, apparently R sees the date as
something other than date (character). Let's say I am opening a CSV
file, one of the columns of which is a date or time. How do I specify
that when opening the file?
Thanks for the help,
Jim
--
2008 Mar 04
3
creating a matrix subset based on a threshold cutoff
Hi,
I have a table of x rows and y columns. The table is huge and so i'd like
to create a subset of the data containing rows where any of the y values are
below a threshold, say 1e-4. Is there a simple way of doing this in R?
thanks
Rich
2008 Feb 22
3
Problem with cut
Hi All,
I might misunderstood how cut works. But following behaviour surprises
me.
vv <- seq(150, 346, by= 4)
cc <- cut(vv, 12)
cc[vv == 330]
Results [1] (330,346]
I would have expected 330 to fall into (313,330] category.
Can you please advice what do I do wrong?
Many Thanks,
Jussi Lehto
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2008 Feb 29
4
help
Dear Sir/Madam,
I got some problem about using R.
I am a student, and need to use R a lot. But sometimes when I am working in
computer lab, we can not install some particular pacakges by ourselves because
of the previliges.
Can the folder of Librabry of R, move to, for instance the personal folder, my
documents... then we can install any specified package?
Best regards,
2009 Sep 28
4
How to assess object names within a function in lapply or l_ply?
Dear All,
to produce output of several columns of a data frame, I tried to use
lapply and also l_ply. In both cases, I would like to print a header
line containing also the name of the respective column in the data frame.
For example, I would like the following
lapply(data.frame(a=1:3, b=2:4), function(x) print(deparse(substitute(x))))
to produce:
[1] "a"
[1] "b"
and
2008 Jan 14
2
Permutations of variables in a dataframe
Hallo All,
I would like to apply a function to all permutations of variables in a
dataframe (except the first). What is the best way to achieve this?
I produce the permutations using:
nvar <- ncol(dat) - 1
perms <- as.matrix( expand.grid(rep( list(1:0) , nvar ))[ , nvar:1] )
Thanks in advance
Serguei
Test-dataframe, comma-delimited:
code,wav,w,area,gdp,def,pop,coast,milspend,agr
2010 Aug 10
1
Timeout from server <...> during authentication
Hello, I'm trying to create a vpn using TINC with a WindowsServer2003 as
client, but I'm receiving the following messaging when running "tincd -n
vpn -D -d5"
--------------------
...
Trying to connect to server <...>
Timeout from server <...> during authentication
Could not set up a meta connection to server
...
--------------------
I tried the same tinc
2007 Jul 25
1
if - else
Greetings,
I have some confusion with the use of if - else. Let's say I have a
four variables as follows:
Condition DateFound DateFirstEvent
DateSecondEvent
NA 10Jan2000 NA NA
0 05Jan2000 07Jan2000
10Jan2000
1 07Jan2000 07Jan2000
2008 Mar 07
3
Combine two columns
Is there a way to combine two columns within a data frame?
Example data:
id snp AL1 AL2
1500 30 A B
1510 30 A A
1520 30 A B
This is what I would like:
indv snp AL1AL2
1500 30 AB
1510 30 AA
1520 30 AB
Any help is greatly appreciated.
Alysta
2010 Mar 22
2
Factors attribute?
I noticed that when I fit a linear model using 'lm' there is an attribute called "factors" that is added to the "term". It doesn't seem to appear for 'model.matrix', just 'lm'. I have been unable to find where it gets constructed or what it means? It looks like a two dimensional array that I may be able to use so I would just like to get some
2006 Jul 06
3
Accessing form field contents
I have an HTML form on the screen, that is connected to a database
(standard Ruby way). I found that there are people that would rather not
fill in this information, but would rather search Amazon for the info.
Therefore, I added a link to the right of one of the fields that, when
pressed, will search Amazon for what ever you typed into that field.
So, how can I do that? At first I tried
2003 Sep 30
2
non-linear trends in kriging model
Hi
I am struggling to fit a non-linear trend using the
likfit function in geoR.
Specifically I want a sigmoidal function, something
like SSfpl in the nls package to fit the trend. But
it seems trend.spatial in geoR only works with lm or
glm type models.
Any ideas how I can specify the model to calculate the
kriging parameters using REML, including the
parameters of a sigmoidal trend function
2005 May 06
4
Change class factor to numeric
I am attempting to develop a multiple regression model using selected
model variables that should all be treated as numeric (mostly real)
values.
However, R considers one specific variable "mass" automatically to be of
class "factor", probably because "mass" consists of integer values that
are repeated.
I now want to force R to treat "mass" as a numeric
2008 Sep 13
2
Symbols on a capscale object plot
Hi, I'm a beginner with R, but I'm getting excellent results with it.
Well I've got an capscale object (vegan package) and I want to made a biplot
with symbols representing six groups of areas.
With the plot.cca function and some par attributes (like 'labels') I was
able to substitute the samples names for keyboard symbols ('x','o','#',ect),
but it's
2008 Oct 28
3
Keep the email on the server
Hello,
I migrate my server POP3/IMAP recently the Courier-IMAP for Dovecot and
am having
problems when the user configures your e-mail client to leave a copy of
mail on the server.
All mail in the inbox, are brought all the time that you check your mailbox
input via POP3, causing a large traffic of unnecessary data every time.
In my opinion
you should bring only the new mail, unread.
Can you
2005 Oct 31
3
Applying a function to a vector
I have defined a function to compute the value of a
beta distribution of the second kind (the existing
beta distribution of th stats package is the beta
distribution of the first kind). It works perfectly
for a single value, but I want to apply it to a vector
of 22 000 values. I can use a loop for the calculation
of each value but it runs very very slowly.
So, what can I change ?
Hers's the
2004 Sep 29
2
optim "a log-likelihood function"
Hello,
i know that i have to use optim, but i'm confused how its
possible maximize the sum over all l[i] and get the optimized
max(LL), r and alpha?
LL <- function(trans,time){
for(i in 1:length(trans){
l[i] <- log(lgamma(r+trans[i] -
gamma(r+1)*(alpha/alpha+t[i]))**r)*(t[i]/alpha+t[i]))**trans[i]
}
return(sum(l))
}
i'm confused how i have to set r and alpha
and i
2008 Jun 23
5
Need ideas on how to show spikes in my data and how to code it in R
Hi
I have recently been analyzing birthweight data from a clinic. The
data has obvious defects in that there is digit preference on certain
weights making them overrepresented. This shows as spikes in the
histogram on certain well rounded weights like 2, 2.5, 3, etc. I
would like to show this to government officials but can't figure out
how I should present the finding in an easy to