Displaying 20 results from an estimated 1000 matches similar to: "model construction"
2009 Aug 31
2
interactions and stall or memory shortage
Hello,
After putting together interaction code that worked for a single pair of
interactions, when I try to evaluate two pairs of interactions(
flowers*gopher, flowers*rockiness) my computer runs out of memory, and the
larger desktop I use just doesn't go anywhere after about 20 minutes.
Is it really that big a calculation?
to start:
mle2(minuslogl = Lily_sum$seedlings ~ dnbinom(mu = a,
2004 Jan 09
3
ipred and lda
Dear all,
can anybody help me with the program below? The function predict.lda
seems to be defined but cannot be used by errortest.
The R version is 1.7.1
Thanks in advance,
Stefan
----------------
library("MASS");
library("ipred");
data(iris3);
tr <- sample(1:50, 25);
train <- rbind(iris3[tr,,1], iris3[tr,,2], iris3[tr,,3]);
test <- rbind(iris3[-tr,,1],
2006 May 22
4
use join table in paginate
How come I allways immediately run into difficult stuff when I''m trying
some new programming language? Am I blind for the simplicity of
Ruby/Rail, which a see must be there? Anyway, don''t try and answer this
rhetoric question. I have got another one for you, seemingly difficult.
I''m struggling with a n:m relationship (in a database, that is) and its
join table.
2002 May 17
1
split-plot design?
Dear R-gurus,
We are planning an experiment to test if plants produced by selfing are less
fit than those produced by outcrossing. We have plants from three different
alpine valleys, picked randomly among all the possible valleys. In each valley,
we have a number of individuals, also picked at random. seeds from this
individuals were brought back to the green house and sawned. when they
2005 Oct 10
1
interpretation output glmmPQL
Hi !
We study the effect of several variables on fruit set for 44 individuals
(plants). For each individual, we have the number of fruits, the number
of flowers and a value for each variable.
Here is our first model in R :
y <- cbind(indnbfruits,indnbflowers);
model1
<-glm(y~red*yellow+I(red^2)+I(yellow^2)+densite8+I(densite8^2)+freq8_4+I
(freq8_4^2), quasibinomial);
- We have
2007 Nov 28
4
spf record
Your spf record is broken:
dovecot.org. 39942 IN TXT "v=spf1 a -all"
--
Jim Flowers <jflowers at ezo.net>
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
2005 Jun 17
1
Mixed model question
Hi,
I am new to this list as a poster, but a reader for some time.
I've using R for several weeks now, and I have a lot of questions about
certain procedures. Here I go:
I want to test if there are differences in the time spent by pollinators
visiting flowers of a given plant species, according to a number of
experimental manipulations made on those flowers. All experimental
2005 Oct 13
0
[LLVMdev] Next LLVM release thoughts?
>> In that case, it needs a cool "release name". :)
>
> Suggestions welcome!
Names of flowers are numerous but not exactly cool. I do not think any other
software project has used flower names.
Aaron
2002 Jan 06
4
File Info Question
When I run ogginfo on a .ogg file I created with oggenc (RC3), it lists some
things that I have questions about:
1. Ogginfo lists bitrate_average and bitrate_nominal. Now, bitrate_average
(I assume) would mean the overall bitrate average for the entire file but
what does bitrate_nominal mean?
2. How is the serial number created? Can I tell something specific about an
.ogg file by looking at it?
2011 Jun 27
1
import text-records and set the fields in a table
hi!
I apologize in advance if this is a newbie dumm question, but I really can't
figure it ou.
I have lists of sumeric and character data on some URLs, which look like
this:
<photo id="5876248819" owner="13716719 at N04" secret="faf9bb7f52"
server="5264" farm="6" title="our rose garden" ispublic="1"
2005 Nov 10
2
rsync local copy saves ower:group remote copy sets to rsync.conf owner:group
Using sudo and rsync to perform migrations of source from test to prod
When the rsync 'source' 'target' are both on the local server the owner:group
is maintained from the source
When the copy is 'source' local 'target' remote the owner:group changes to
the value specified by uid:gid in the rsyncd.conf
I want the 'target' to always change to uid:gid
2010 Aug 09
1
Need help on heatmap, K-means and hhierarchical clustering methods
Hi folks,
I am new to the R software. I have been going through different materials to
know more about R.
I have the R software installed on my windows machine.I would like to know
the R source code for the following problems on iris flower data set.
I need to do the cluster analysis project with the iris data set. The goal
is to cluster the flowers
according to their Sepal.Length, Sepal.Width,
2008 Oct 14
2
help about how can R compute AIC?
Hello.
I need to know how can R compute AIC when I study a regression model?
For example, if I use these data:
growth tannin
1 12 0
2 10 1
3 8 2
4 11 3
5 6 4
6 7 5
7 2 6
8 3 7
9 3 8
and I do
model <- lm (growth ~ tannin)
AIC(model)
R responses:
38.75990
I know the following formula to compute AIC:
AIC=
2009 Dec 01
0
[LLVMdev] Possible bug in ExpandShiftWithUnknownAmountBit
On Mon, Nov 30, 2009 at 7:22 PM, Javier Martinez <javier at jmartinez.org> wrote:
> Hello,
>
> I'm working in adding support for 64-bit integers to my target. I'm using
> LLVM to decompose the 64-bit integer operations by using 32-bit registers
> wherever possible and emulating support where not. When looking at the bit
> shift decomposition I saw what seems to be a
2005 May 24
2
Basic matematical functions with NAs
Dear All,
I've tried to sum columns -- different species of flowers, fruits plus twigs -- with NAs to get litterfall/trap, and then after use litterfall to calculate production (litterfall (grams)/ hectare/ day. But R 'sees' litterfall/trap as a string.
My question: How to use basic mathematical functions to deal with NAs in data management.
Example (as you can note I have many
2008 Apr 18
5
show sum of textboxes
Hi all,
I have multiple textboxes containing numbers. I want to add up all the
numbers and show the sum. Can I select the textboxes by class and sum
the content?
This also has to happen realtime: when a number is changed ina textbox
the sum should also change.
can this be done?
regards,
Stijn
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2010 Oct 16
3
Doubt with symbols in Rails
I was trying to write a wrapper for number_to_currency to return
currency in pounds. I used a helper class to do this.
def number_to_pounds(amt)
number_to_currency(amt, :unit => "£")
end
This works fine, but I am trying to understand why I can''t use a
symbol to pass the values. I thought symbols were like pointers. (you
now know I am a newbie).
def
2009 Dec 01
4
[LLVMdev] Possible bug in ExpandShiftWithUnknownAmountBit
Hello,
I'm working in adding support for 64-bit integers to my target. I'm using
LLVM to decompose the 64-bit integer operations by using 32-bit registers
wherever possible and emulating support where not. When looking at the bit
shift decomposition I saw what seems to be a bug in the implementation. The
affected function is ExpandShiftWithUnknownAmountBit in
LegalizeIntegerTypes.cpp.
2009 Dec 01
2
[LLVMdev] Possible bug in ExpandShiftWithUnknownAmountBit
Hi Duncan,
The problem is the implementation of the expansion. Perhaps an example
can help illustrate better. Take the case of a 64-bit integer shifted
left by say 6 bits and is decomposed using 32-bit registers. Because 6
is less than the 32 (the register size) the resulting low part should be
equal to the source low part shifted left by 6 bits. The current
implementation places a zero
2013 Mar 19
4
Copying rows in data frames
Hi,
I'm trying to copy the first row of one data frame to another. This is the
statement I am using :
df2[1,]<-df1[1,];
I have printed them out separately:
df1[1,] = A C D E F
But after copying:
df2[1,] = 96 29 88 122 68
Why isn't it copying? They are both data frames, and "as.character" isn't
working either.
Thanks for your input :)
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