search for: grothendiek

..., unwittingly leading to the mess. See if it got corrected now (I do not have firefox yet in my computer, so no way of knowing whether it works), and please let me know. Also, made some changes and reformatted the original slides to make them other browser compatible, thanks to comments from Gabor Grothendiek, Stuart Lesk, and Sundar Dorai-Raj. Here is the URL again: http://www.aloofhosting.com/arinbasu/Rintroweb.htm /Arin Basu [[alternative HTML version deleted]]

...hod for two-mode networks. Having a n x m matrix where n is the first set of entities/ actors and m representing the second set, I want to colour both sets of actors differently. I tried "plot.network" from the network-package, but I did not succeed. Even the proposed solution from Gabor Grothendiek (http://finzi.psych.upenn.edu/R/Rhelp02a/archive/87003.html ) seems not well suited for the problem. Further, I'm wondering how to interpret "vertex.col : color for vertices; may be given as a vector or a vertex attribute name, if vertices are to be of different colors." . For the lat...

Hello, I'm using the following for loop to find regression curves using a list of functions (formList), a list of starting values (startList), uppervalues (upperList) and lower values (lowerList). A sample of the list of function I use in the loop is the following: FormList <- list(PTG.P ~ fz1(Portata, a, b), PTG.P ~ fz2(Portata, a, b), PTG.P ~ fz3(Portata,a, b, d, e), PTG.P ~

...Excel date/times values: - dateTimeToStr converts an ole datetime value to a string - strToDateTime vice versa (depends on local settings) - dateTimeToIsoStr } - isoStrToDateTime } independent of local settings (date/time support stimulated by an email of Gabor Grothendiek) - new argument "stringsAsFactors = default.stringsAsFactors()" (proposed by Peter Cock) Remark: this is a *potentially code breaking change*. Until now strings have been retrieved as characters. - new argument "checkNames = TRUE" (proposed...

We would like to fit parameters using a simulation with stochastic processes as theoretical values. We generate a simple exemple with nls.lm to see the logic and the problem: First without stochasticity (it is a dummy example, the fited value is simple the mean of a set of 10 numbers): #Ten numbers x <- 1:10 #Generate 10 Gaussian random number with mean=3 sd=1 simy <- rnorm(length(x),

I saw a similar question but I still don't fully understand how to implement optim. Can someone help me out with this? Thanks. Keun-Hyung > vol<-rep(c(0.03, 0.5, 2, 4, 8, 16, 32), 3) > time<-rep(c(2,4,8),each=7) > p.mated<-c(0.47, 0.48, 0.43, 0.43, 0.26, 0.23, "null", 0.68, 0.62, 0.64, 0.58, 0.53, 0.47, + 0.24, 0.8, 0.79, 0.71, 0.56, 0.74, 0.8, 0.47) >

G'day, I am new user to R, and have been thrown in the deep end with a something my company want me to write. my code is as follows: kenttemp=read.csv("mnowak.11.1.csv") rows=nrow(kenttemp)-5 kent=kenttemp[1:rows,] #have to remove the last 5 lines of the graph as they interfere with rest of data max(kent[,16],na.rm=TRUE)->ymax ymax=ymax+200 #This is to get