search for: adjoint

Hi there, I'm new to R and despite searching today, I can't find a function which will compute the adjoint of a matrix A. Does this adjoint function exist in R? Thanks in advance!

...1] 1.022929 > dnorm(x=1, mean=1, sd=0.3) [1] 1.329808 > dnorm(x=1, mean=1, sd=0.1) [1] 3.989423 > dnorm(x=1, mean=1, sd=0.01) [1] 39.89423 > dnorm(x=1, mean=1, sd=0.001) [1] 398.9423 Is there a bug with the algorithm? Thanks, Marc ======================== Marc B?lisle Professeur adjoint D?partement de biologie Universit? de Sherbrooke 2500 boul. de l'Universit? Sherbrooke, Qu?bec J1K 2R1 CANADA T?l: +1-819-821-8000 poste 1313 Fax: +1-819-821-8049 Courri?l: Marc.M.Belisle at USherbrooke.ca Site Web: www.usherbrooke.ca/biologie/recherche/ecologie/Belisle/belisle.html

How do you calculate the percentage of data within 2SD, 3SD, 4SD, 5SD, and 6SD of the mean? I used the following link as the data I'm working with: nb10 <- read.table("http://www.adjoint-functors.net/su/web/314/R/NB10") if this helps answer my question. Can you please explain how to calculate the SD's? Please be specific in which part of the function changes when calculating the next SD up. Thanks. -- View this message in context: http://r.789695.n4.nabble.com/How-...

Okay, so I have a homework projecr for R, and we had to input the following link as some sort of data: nb10 <- read.table("http://www.adjoint-functors.net/su/web/314/R/NB10"). Afterwards, we have to use fivenum(nb10) to find max, min, quantiles, and sd, but I'm okay with this. The next question is where I'm stuck. The question is as follows; Compare the median (use the quantiles or median(nb10$V1)) to the mean. I found...

...r-help > > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > > > > > -- > Renaud LANCELOT > Département Elevage et Médecine Vétérinaire (EMVT) du CIRAD > Directeur adjoint chargé des affaires scientifiques > > CIRAD, Animal Production and Veterinary Medicine Department > Deputy director for scientific affairs > > Campus international de Baillarguet > TA 30 / B (Bât. B, Bur. 214) > 34398 Montpellier Cedex 5 - France > Tél +33 (0)4 67 59 37 17 &...

...+ exp((xmid - x)/exp(lscal)))), data = xy, : singular gradient' 6. Would anyone know if I can get R to skip non-converging use of nls() so that I can at least obtain the parameters for the curves which R can fit? Thanks for your time, Marc =================== Marc B?lisle Professeur adjoint Chaire de recherche du Canada en ?cologie spatiale et en ?cologie du paysage D?partement de biologie Universit? de Sherbrooke 2500 Boul. de l'Universit? Sherbrooke, Qu?bec J1K 2R1 Canada T?l: +1-819-821-8000 poste 61313 Fax: +1-819-821-8049 Courri?l: Marc.M.Belisle at USherbrooke.ca

...est]; tmp), possibly extended to handle missing values in test. However, is there a way to avoid the evaluation of the alternative expression in ifelse when the argument test is false ? Best regards, Renaud -- Renaud LANCELOT D?partement Elevage et M?decine V?t?rinaire (EMVT) du CIRAD Directeur adjoint charg? des affaires scientifiques CIRAD, Animal Production and Veterinary Medicine Department Deputy director for scientific affairs Campus international de Baillarguet TA 30 / B (B?t. B, Bur. 214) 34398 Montpellier Cedex 5 - France T?l +33 (0)4 67 59 37 17 Secr. +33 (0)4 67 59 39 04 Fax +33...

...iables, and this, without using loops? For example, I have day, hour, var1 and var2. How could I compute cor(var1,var2) for each day*hour combination and obtain a matrix with day, hour and the cor value for each combination? Thanks for your time, Marc =================== Marc Bélisle Professeur adjoint Chaire de recherche du Canada en écologie spatiale et en écologie du paysage Département de biologie Université de Sherbrooke 2500 Boul. de l'Université Sherbrooke, Québec J1K 2R1 Canada Tél: +1-819-821-8000 poste 1313 Fax: +1-819-821-8049 Courriél: Marc.M.Belisle@USherbrooke.ca [[alternativ...

.../(a exp(n) + x exp (n)) Where a = a0 + a1z b= b0 + b1z x and z are variables y the variable that I am trying to modelise a0, a1, b0 and b1 are parameters to determine. I am wondering if I can use nls and if so how do I have to write my command ? Thanks in advance for your help. Cyrille Barn??rias Adjoint au chef d'??chelon interr??gional de Caen Inventaire forestier national 73 rue Marie Curie 14 200 H??rouville Saint-Clair France Tel : 02.31.47.71.53

...the intercept and slope for each factor level within a matrix? For instance, suppose a dataframe containing 3 variables: id, x and y. I want to compute the function lm() for each level contained in id, as lmList would do... Thanks for your time, Marc =================== Marc B?lisle Professeur adjoint Chaire de recherche du Canada en ?cologie spatiale et en ?cologie du paysage D?partement de biologie Universit? de Sherbrooke 2500 Boul. de l'Universit? Sherbrooke, Qu?bec J1K 2R1 Canada T?l: +1-819-821-8000 poste 61313 Fax: +1-819-821-8049 Courri?l: Marc.M.Belisle at USherbrooke.ca

...hanks very much, Jeff ------------------------------------------ Prof. Jeffrey Cardille jeffrey.cardille@umontreal.ca ************************************************************************ ************************************ ** Département de Géographie ** Bureau: ** ** professeur adjoint / assistant professor ** Salle 440 ** ** Université de Montréal ** Pavillon Strathcona ** ** C.P. 6128 ** 520, chemin de la Côte-Ste-Catherine ** ** Succursale Centre-ville ** Montreal, QC H2V 2B8 ** ** Montréal, QC, H3C 3J7 ** Télé: (514) 343-8003 ** ****...

Hi list, is there any direct way to obtain confidence intervals for the regression slope from lm, predict.lm or the like? (If not, is there any reason? This is also missing in some other statistics softwares, and I thought this would be quite a standard application.) I know that it's easy to implement but it's for explanation to people who faint if they have to do their own programming...

hello I make a subroutine that give-me a (mathematical) function in string format. I would like transform this string into function ( R function ). thanks for any tips. cleber #e.g. fun_String = "-100*x1 + 0*x2 + 100*x3" fun <- function(x1,x2,x3){ return( ############ evaluation( fun_String ) ############ ) True String mathematical function :-( :-( > nomes [1]

...ncial instruments. One area we will apply apply LLVM is compiling instead of interpreting our domain specific language (DSL) that our customers use for modeling complex financial instruments to dramatically improve performance. A less orthodox application is for automatic differentiation, both in adjoint and tangent modes, and both from the DSL above and from C++ through operator overloading. By recording the sequence of operations that produce a result, you can find the derivatives of that result with respect to many inputs accurately. With LLVM we expect to also do that efficiently. I'm inte...

...ts own line, so "tmp" contains a very long column of words. - dump will output the structure of the object so it can be loaded back. - write is suited for matrices of data, not arbitrary objects. Something else i should look at ? Thanks, Chuck --- Charles Dugas, Ph.D., A.S.A. Professeur adjoint, D?partement de Math?matiques et Statistique Universit? de Montr?al www.dms.umontreal.ca t?l. : (514) 343-6433 cell. : (514) 592-9301

Dear Listers, If I have several glm objects with names glm1, glm2.... and want to apply new data to these objects. Instead of typing "predict(glm1, newdata)..." 100 times, is there way I could do so in a loop? Thank you so much! wensui [[alternative HTML version deleted]]

How do one dertermine the optimal number of rescaling cycles to use when performing DCA using the decorana function (library vegan)? Thanks for your time, Marc =================== Marc Bélisle Professeur adjoint Chaire de recherche du Canada en écologie spatiale et en écologie du paysage Département de biologie Université de Sherbrooke 2500 Boul. de l'Université Sherbrooke, Québec J1K 2R1 Canada Tél: +1-819-821-8000 poste 61313 Fax: +1-819-821-8049 Courriél: Marc.M.Belisle@USherbrooke.ca [[alternati...

...List(mass ~ SSfpl(age, A, B, xmid, scal)|id, + na.action=na.omit, + data=data) > reg Call: Model: mass ~ SSfpl(age, A, B, xmid, scal) | id Data: data Coefficients: Error in !unlist(lapply(coefs, is.null)) : incorrect type of argument =================== Marc B?lisle Professeur adjoint Chaire de recherche du Canada en ?cologie spatiale et en ?cologie du paysage D?partement de biologie Universit? de Sherbrooke 2500 Boul. de l'Universit? Sherbrooke, Qu?bec J1K 2R1 Canada T?l: +1-819-821-8000 poste 61313 Fax: +1-819-821-8049 Courri?l: Marc.M.Belisle at USherbrooke.ca

Hello R users: I am fairly new to R and am trying to figure out how to compute an intraclass correlation (ICC) and/or design effect for binary data? More specifically, I am trying to determine the amount of clustering in a data set - that is, whether certain treatment programs tend to work with more or less severe clients. The outcome variable is dichotomous (low severity / high severity)

...join ... worked fine. Except a dns error message, I can see the server in Active Directory. How can I manage this goal ? This is quiet urgent because my chief wants a result in the next 7 days else I will have to use a Windows box :( Regards. -- *Hospices Civils de Beaune* *Patrice OLIVER* /Adjoint du RSIO Service Informatique/ BP 104 21203 BEAUNE Cedex patrice.oliver at ch-beaune.fr <mailto:patrice.oliver at ch-beaune.fr> T. 03 80 24 44 09 / F. 03 80 24 45 90 ------------------------------------------------------------------------ Ce message, y compris les pi?ces jointes, est ?...