Displaying 9 results from an estimated 9 matches for "theor".
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2010 Sep 11
5
for loop
Hello,
I have a simple question: I want to list numbers 1:k, but if k <1, I hope nothing listed.
how should we do?
k=2
for (i in 1:k) print(i)
[1] 1 # <-correct
[1] 2
k=0
for (i in 1:k) print(i)
[1] 1 #<---- wrong
[1] 0
thanks
jian
[[alternative HTML version deleted]]
2011 Apr 01
1
qcc.overdispersion-test
Hi all,
I have made an overdispersion test for a data set and get the following result
Overdispersion test Obs.Var/Theor.Var Statistic p-value
poisson data 16.24267 47444.85 0
after deleting the outliers from the data set I get the following result
Overdispersion test Obs.Var/Theor.Var Statistic p-value
poisson data 16.27106 0 1
The problem is that the over...
2012 Jan 29
2
Data Structure to Code
...in the workspace.
How can I generate the code that can create that structure? That is, given an example of a data structure, is there a way to generate the code that can greate that structure?
Alternatively, is there a reference that provides a list of dta structures together with a full list of theor respective attributes?
[[alternative HTML version deleted]]
2012 Dec 14
1
Define a custom-built loss function and combine it with nls()
...dimension of a body part (dependent variable) and
x a dimension of body size (independent variable). With applying a
non-linear regression I would like to get estimates for the parameters a
and b.
Fortunately, I already have a recommended loss function, proposed by
Ebert & Russel 1994, J. Theor. Biol.:
loss = abs(y*abs(x-(y/a)^(1/b))-a/(b+1)*abs(x^(b+1)-(y/a)^((b+1)/b)))
How may I define the loss function above and combine it with a
non-linear regression nls() in R?
Example for a data frame with the measured variables x and y:
x<-1:10
y<-c(0.3,0.7,0.9,1.3,2.0,2.4,3.3,3.8,5.0...
2011 Jan 27
1
Quasi-poisson glm and calculating a qAIC and qAICc...trying to modilfy Bolker et al. 2009 function to work for a glm model
...9;ve been a viewer of this forum for a while and it has helped out a lot,
but this is my first time posting something.
I am running glm models for richness and abundances. For example, my beetle
richness is overdispersed:
> qcc.overdispersion.test(beetle.richness)
Overdispersion test Obs.Var/Theor.Var Statistic p-value
poisson data 2.628131 23.65318 0.0048847
So, I am running a simple glm with my distribution as quasipoisson
> glm.richness1<-glm(beetle.richness~log.area, family = quasipoisson)
Now I want to calculate a qAIC and qAICc. I was trying to modify the...
2012 Feb 12
1
how to extract p values in svyglm
summary(result)
Call:
svyglm(Injury ~ seat, sD, family = quasibinomial(link = "logit"))
Survey design:
svydesign(~1, prob = NULL, strata = Data[, 1], weights = Data[,
4], data = Data, fpc = ~fPc)
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) -4.256875 0.001421 -2996.7 <2e-16 ***
seatbad 0.681504 0.001689 403.4 <2e-16 ***
---
2008 Nov 03
0
No subject
...e
keyframe, dropping packets until then.
6) Continue counting down until we reach the target frame, we are now
decoding each frame/packet. At the target frame produce the YUV
output.
You can see this in code here:
http://lives.cvs.sourceforge.net/viewvc/lives/lives-plugins/plugins/decoder=
s/ogg_theora_decoder.c?view=3Dmarkup
My code also builds an index of file_offset/granulepos at it discovers
them, so it is ultra-efficient.
Feel free to make use of this code.
By the way, if anybody wants to use this code in liboggz I would
recommend it. I and other users have been testing it for several w...
2008 Nov 03
0
No subject
...e
keyframe, dropping packets until then.
6) Continue counting down until we reach the target frame, we are now
decoding each frame/packet. At the target frame produce the YUV
output.
You can see this in code here:
http://lives.cvs.sourceforge.net/viewvc/lives/lives-plugins/plugins/decoder=
s/ogg_theora_decoder.c?view=3Dmarkup
My code also builds an index of file_offset/granulepos at it discovers
them, so it is ultra-efficient.
Feel free to make use of this code.
By the way, if anybody wants to use this code in liboggz I would
recommend it. I and other users have been testing it for several w...
2005 Jan 26
1
Re: PC-based video server
On Wednesday 26 January 2005 02:20 pm, Andrey wrote:
> > I've seen pretty good quality theora format video at less than 1 Mbps.
>
> What was the resolution/frame/rate/type of the movie.
A sample video can be downloaded, using BitTorrent, from www.theora.org.
It's in the Contents section on the left side of the page, and labeled "CC
spots." What you actually get is t...