similar to: Any help

Dear colleagues, Von Bertalanffy model is commonly adjust to data on fish length (TL) and age (AGE) TL= Linf*(1-exp(-K*(AGE-t0)). Linf, K and t0 are parameters of the model. One main goal of the growth study is the comparison of growth parameter estimates between sexes of the same species, or estimates from different populations. The realibility statistical tests normally applied are highly

Could someone help me on how to correctly try to correct this error message arning : BCa Intervals used Extreme Quantiles Some BCa intervals may be unstable Warning message: Extreme Order Statistics used as Endpoints in: norm.inter(t, adj.alpha) Regards IF [[alternative HTML version deleted]]

Hi guys, is there a way to see how many channels of an specific tecnology are being used? Like, i have a zap card, e1 (30 channels), and there are 10 channels being used at this moment. When the E1 reaches 15 busy channels I need to receive a call or something like this, telling me that 15 of 30 channels are busy. How can I do this? Thanks! -------------- next part -------------- An HTML

I am a newbie at RoR and am disappointed by the fact that I couldn''t install it in my Ubuntu 10.10 using an IDE. I tried NetBeans 6.9.1, Eclipse 3.6.2, Aptana Studio and its plugin for Eclipse and RubyMine. There was always a problem somewhere (rails, rubygems, rake, etc) preventing me from working with my project. I currently have Netbeans 6.9.1 bundled with java jdk 1.6.0. I''ve

Hi guys, I'm trying to connect Asterisk to the MySQL, but I can't execute it. It returns an error, as below: -- Executing [200 at teste:2] MYSQL("Console/dsp", "Query resultid 1 SELECT/ ramal/ FROM/ colaboradores/ WHERE/ ramal=200") in new stack [Feb 18 15:55:13] WARNING[7696]: app_mysql.c:393 aMYSQL_query: aMYSQL_query: mysql_query failed. Error: You have an error in

Hi guys, i'm trying to use the "featuremap" of features.conf inside the app meetme, but it's no working. like: _5XXX => { Set(DYNAMIC_FEATURES=toca_macaco); MeetMe(${EXTEN},F); //F forces the meetme to pass DTMF Hangup(); }; in features.conf: toca_macaco => 123, peer, Playback,tt-monkeys But, if, inside the room, I press *123* the sound file

Dear colleagues, I have used statistical software "R" in academic research, and I find very interesting. So now I have started my studies at advanced level. I have conducted several statistical models of the type "*nls*". In respect of procedures for models of the type nls, I'd like you answer only one question that I have had doubts, related to the formula

I have to compute some standard errors using the delta method and so have to use the command "numericDeriv" to get the desired gradient. Befor using it on my complicated function, I've done a try with a simple exemple : x <- 1:5 numericDeriv(quote(x^2),"x") and i get : [1] 1 8 27 64 125 216 attr(,"gradient") [,1] [,2] [,3] [,4] [,5] [,6] [1,] Inf

Dear R developers, I've run into a weird behavior of the numericDeriv function (from the stats package) which I also posted on StackOverflow (question has same title as this email, except for the version of R). Running the code bellow we can see that the numericDeriv function gives an error as the derivative of x^a wrt a is x^a * log(x) and log is not defined for negative numbers. However,

Hi, I am stuck on something for a couple days, I am almost about to give up. This looks simple, but I can't figure out. I hope I can get some help here. I am trying to do some symbolic and numerical derivations. Let me explain the problem. Let's say, I have a matrix as follows: > load <- matrix(c(3,0,1,4,1,3),nrow=3,ncol=2,byrow=TRUE) > > load [,1] [,2] [1,] 3 0

R Help List -- I have defined two time-series-vector-valued-functions, let them be f and g, and want to find the numeric derivative of f with respect to the variable x where f depends on x through g: (d/dx)(f (g(x) ) Moreover, x is a vector I tried this out the long way (naming every element of the x vector and then making the 'theta' argument in numericDeriv() the character vector of

> On only ten points, what did you expect ? Even with 1000 > observations, estimating a density is difficult, and has > been the subject of a century of research. Kernel density > estimates are among the most successful. For your immediate > application, try plot(density(rnorm(10)), type="l"), etc. wait, you misunderstood me! I'd like to see 10 or 9 points with

Hello, I don't understand the description / help-text for the numericDeriv() function. Why is there a new environment used? And what is meant with an environment here? Is it similar or the same as a local workspace, like an environment in functional languages? And why is it needed here? numericDeriv could just calculate the difference bewtween two values and divide this difference by the

Currently compression and I assume if encryption is implemented it is turned on or off during mount. There are however many times when a user may want to select which files/directories they want to compress or encrypt. This will also be helpful when implementing btrfs support in grub for example. We can say the disk can be compressed/encrypted except for /boot so compression/encryption

Dear all As far as I could trace, looking at the function C function numeric_deriv, this unwanted behavior comes from the inner most loop in, at the very end of the function, for(i = 0, start = 0; i < LENGTH(theta); i++) { for(j = 0; j < LENGTH(VECTOR_ELT(pars, i)); j++, start += LENGTH(ans)) { SEXP ans_del; double origPar, xx, delta; origPar = REAL(VECTOR_ELT(pars, i))[j];

Dear All, I am trying to solve a Generalized Method of Moments problem which necessitate the gradient of moments computation to get the standard errors of estimates. I know optim does not output the gradient, but I can use numericDeriv to get that. My question is: is this the best function to do this? Thank you Jean,

I fit my CDF to sum of exponentials and now I want to take the numerical derivative of this function to obtain probability density.I will really appreciate your help reagrding the error messages I am getting which I don't understand. * * > fitterma <- function(xtime) { a <- -0.09144115 b <- -0.01335756 c <- -2.368057 d <- -0.00600052

Hello, people. May be i''m offtop, but: how to count traffic from every ip of local network, masqueraded by iptables? like squid log or into mysql tables... Regards, Vitaliy.

i have a centos box (vps) with sendmail and i'am using it to send a newsletter to mail clients. I'am using a machine in my local network to send the e-mails via SMTP (AUTH PLAIN) but after sending some e-mail (35 .. 50) the connection starts to get closed by the server (centos/sendmail) I've searched google for a limit configuration on number of e-mails in sendmail but

Hello, everyone! I would like to know how to calculate the F-value and P-value for a non-linear regression: y ~ a * X^b * W^c ? Note: a, b and c are coefficients of adjustment of the equation and X and W are variables previously measured ... Someone would have any suggestions? Thanks ... [[alternative HTML version deleted]]