similar to: Solve PDE with initial and boundary conditions in R

I haven't used r in quite a while but would like to get back into it. I have a problem that I would like to solve with r. I have some multinomial data that looks to follow an asymmetric sigmoidal growth pattern. Solving a multinomial gompertz partial differential equation in r is what I’m after. Would anyone be able to provide me the code and packages to do something like this? Regards,

Dear all, Does any know how to solve PDE with R? The archive list refers to the use of ODE if PDE are parabolic. I am not a mathematician and this does not mean anything for me! help would be very appreciated. Many thanks -- ___________________________________________________ Christophe NGUYEN UMR 1220 INRA-ENITAB Transfert sol-plante et cycle des ?l?ments min?raux dans les ?cosyst?mes

Is there a package in R which implements numerically solves pde ? Thanks, Tolga

Hi folks, I am working on my student internship to USA, california and would like to attend a R Advanced Programming course while I am in USA. Where can I find such a course. I am new to this list. Trevor O'brien >From Ireland. [[alternative HTML version deleted]]

Is there is an open source ACD component for Asterisk? Likewise, is there an open source CTI component that will work with Asterisk? Regards, Jim O'Brien -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20040504/e6ee98da/attachment.htm

Hi I?m having difficulty configuring Samba running on FreeBSD. Samba version is 2.2.8a. The scenario is that we have an NT4 domain and I am looking to migrate the printers onto Samba. All of the printers are connected via print servers, mainly HP JetDirect. As far as security is concerned I am happy for guest/anonymous logon as the server will only be used for printing but I have set security to

Hello all. I have 14 variables, named D2_1, D2_2,...,D2_14 (inherited from a data set). I would like to create a matrix of correlations, although I would be content in just learning how to create a proper do loop. I tried something like this: (for i in 1:14){cor(D2_[i],D2_[i], use = "complete.obs")} This is wrong, of course, but I don't know how to "tell" R to run

Dear All, I've done some searching, but to no avail -- I'm plotting x-y data via the "plot" command, and the "log=x" command. The graphed x values are in scientific notation (1e-02 1e-01 1e+00 etc). Might you have some idea on how I can get the plot to uses the x values (0.01 0.10 1.0 10.0 etc) instead? A related Q - where might a good place to search for such

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Dear R users, Prof. Ripley just corrected my understanding of the use of weights in glm, which I thought would allow me to correctly use lmer. However I'm still having problems. My data takes the form of # of infected and uninfected individuals that were measured over time under different treatments. I'm using lmer to adjust for the repeated measures over time. In fitting the

Hello List, Can you recommend me if odeSolve can handle stiff delay differential equations with discontinuities? Or any other package? Best, -m

Hi, I am about to conduct an experiment of temperature dependent development of an insect. Here I would like to know is if I could be able to find the parameters of the models what I will use in data analysis with R program. I have found some other softwares that can be used for parameter estimation but liscence would be needed, not open source. So I prefer to use R langauge if it is reliable

I have an AIX 4.3.3.10 Box running Openssh 3.4. I am using Putty to get to this Ssh server. All is good when I Ssh in using root. But when I try another user profile I get the below: Jun 16 17:22:21 walker sshd[8812]: fatal: login_get_lastlog: Cannot find account for uid 95 In addition, I am kicked out of this session right now. TIA!

Hello, I'm currently looking at FXO options to provide a POTS line to Asterisk to trunk calls with. Does anyone have any experience using the Linksys Sipura 3201 as an FXO device for Asterisk? Thanks

I am attempting to build a customized R installer on Windows, using the Inno Setup installer. I am following the instructions in Section 3.1.8 of the R Installation and Administration Manual ("Building the Inno Setup installer"), which includes the following passage: An alternative way to customize the installer starting with a binary distribution is to first make a full

I am trying to build asterisk-0.9.0 on 533MHz 160MB Redhat Linux 9.0 machine. I have followed the instructions to build asterisk. Building zaptel and libpri seemed to go well (lots of messages but nothing that indicated an error) However, when I do the make clean ; make install for asterisk-0.9.0 after running for sometime I get the following: gcc -shared -Xlinker -x -o app_senddtmf.so

Dear R users, I've notice that there are two ways to conduct a binomial GLM with binomial counts using R. The first way is outlined by Michael Crawley in his "Statistical Computing book" (p 520-521): >dose=c(1,3,10,30,100) >dead = c(2,10,40,96,98) >batch=c(100,90,98,100,100) >response = cbind(dead,batch-dead) >model1=glm(y~log(dose),binomial)

Dear R users, I'm wanting to sample from the negative binomial distribution using the rnegbin function from the MASS library to create artificial samples for the purpose of doing some power calculations. However, I would like to work with samples that come from a negative binomial distribution that includes only values greater than or equal to 1 (a truncated negative binomial), and I

Hi, Apologies in advance for any breaches of netiquette, I couldn't find any guidelines about submission to this forum but I'd be grateful for your help on something. My /boot filesystem is being remounted shortly after start-up as read-only. I get the following messages... journal_bmap_Ra7a5f568: journal block not found at offset 12 on ide0(3,1) Aborting journal on device ide0(3,1)

Hi, I'm very confused - that's not too difficult for me. I have written a small plugin change_passwd_plugin.c I would like this custom IMAP command to be available to all users. The code contains the following. void change_passwd_plugin_init(void) { command_register("XCHANGEPASSWORD", cmd_xchangepasswd, 0); str_append(capability_string, " XCHANGEPASSWORD");