similar to: Error in eco-model

Hello, I have a syntactic problem with ode. How do I specify vectors of equations in ordinary differential equation systems. (i.e. in my case I want to simulate an a priory undefined number of species that have different parameters but the same behaviour) I demonstrate this using the Lotka Volterra example. The code below does not work and I have not a good idea how to specify this right. ##

Hello, I am an R newbie, trying to use lsoda to solve standard Lotka-Volterra competition equations. My question is: how do I pass a parameter that varies with time, like say, phix <- 0.7 + runif(tmax) in the example below. # defining function lotvol <- function(t,n,p){ x <- n[1]; y <- n[2] rx <- p["rx"]; ry <- p["ry"] Kx <-

I am running R 1.2.3 with ESS5.1.18 with Windows 98. I am trying to use lsoda in the odesolve apckage and am having problems. Question: The return value of the function of the system of ode's has to be a list that includes first, the ode's and second, "a vector (possibly with a `names' attribute) of global values that are required at each point in `times'." I

Hello there, Suppose you want to solve the following system of ODE's (a simple Lotka-Volterra predator prey model) dP/dt = beta*P*V - mu*P dV/dt = r*V - beta*P*V where P and V are the numbers of predators and prey. Now, this is easy to do, but suppose you have a system of equations like this, dP1/dt = beta1*P1*V1 - mu1*P1 dP2/dt = beta2*P2*V2 - mu2*P2 dV1/dt = r1*V1 - beta1*P1*V1

dear all. Would someone be kind and willing to explain the code below for a person who has never used R? ( that is if one has enough time and inclination) It implements gillepsie's stochastic algorithm for Lotka Volterra model. What would help me tremendously is to see the breakdown of the line by line code into plain english. thanks for any insights or other comments. sean

I have a dataframe of animal locations that I need to have in incremental order so that I can calculate the distance traveled between each time step. However, I have identified a few values that don't seem to sort properly. For instance, the last value in the table below should be the first value after sorting, since its time value is '00:01:35'. But, for some reason, it seems to be

I've seen a few threads about this, but none that seem to answer my problem I have a list of .txt files in a directory that I am reading into R and row binding together. I am using the following code to do so: # Directory where files are found my.txt.file.directory <- "C:/Jared/Data/Kenya/Wildebeest/Tracking_Data" names.of.txt.files <-

Does anyone know of example r-code/packages for carrying out analysis? Preferably this would have examples from real experimental data of two or more competing species... Thanks Chris Buddenhagen [[alternative HTML version deleted]]

Dear All! It's now weeks that I'm going crazy with R, and as I'm a new user I now ask for help (also because I still have only a few days to finish..)... So shortly I describe you my Experiment in which I was looking for the decomposition of herbivore dung under different treatments: I made a box design experiment which is structured in the following way: I collected dung from 2

I have tried to print a table of greek alphabet names and symbols without success. I can print one character at a time but can't seem to find a way to automate an entire list of the symbols. Some of the code I have tried is below. I have searched on help, worked the examples in the December 2002 R Help Desk article and plotmath but have not been able to find a way to accomplish the

On 5 June 2018 at 16:23, <dag at cray.com> wrote: > The name "getSizeExpressionInBits" makes me think that a Value > expression will be returned (something like a ConstantExpr that uses > vscale). I would be surprised to get a pair of integers back. Same here. > If we went the ConstantExpr route and added ConstantExpr support to > ScalarEvolution, then SCEVs

While it was a good move from Rails part to escape ERB <%= %> tags by default, it doesn''t seem to happen to Sprockets as well. The strange bit is that according to Sprockets documentation, it would be just a matter of naming your template as .jst.eco to enable Eco: https://github.com/sstephenson/sprockets#javascript-templating-with-ejs-and-eco Then, extracted from Eco

Hello R users: I would like to produce a world map with countries colored according to whether they fall into one of 7 eco-climatic zones. For simplicity, each country is allocated to exactly 1 eco-climatic zone. For this purpose I have looked at the map and mapdata packages, which contain world maps composed of polygons (1 for each country, it seems). Each of the polygons can be referred to by a

Dear Sirs, I wrote a patch for pdbedit (pdb_xml.c) which handles cases with national alphabet characters in GECOS fields. I sent it directly to Jelmer Vernooij, but there was no answer. Who can review the supplied patch ? Cheers, Ilia Chipitsine -------------- next part -------------- --- pdb_xml.c.orig Tue Aug 31 12:12:02 2004 +++ pdb_xml.c Tue Aug 31 12:12:07 2004 @@ -373,6 +373,7 @@

https://bugs.freedesktop.org/show_bug.cgi?id=107431 Bug ID: 107431 Summary: Crash system Product: Mesa Version: 18.0 Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: critical Priority: medium Component: Drivers/DRI/nouveau Assignee: nouveau at

Hi, I am using your eco-cancellation library. can u guide me on how to get the eco frame? Thanking you -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20060511/9e3f52e3/attachment.htm

Hi all, We would like to announce the release of our software, which is now available through CRAN. ===================================================================== eco: R Package for Fitting Bayesian Models of Ecological Inference in 2 by 2 Tables Abstract: eco is a publicly available R package that fits parametric and nonparametric Bayesian models for ecological inference in 2 by 2

Hi all, We would like to announce the release of our software, which is now available through CRAN. ===================================================================== eco: R Package for Fitting Bayesian Models of Ecological Inference in 2 by 2 Tables Abstract: eco is a publicly available R package that fits parametric and nonparametric Bayesian models for ecological inference in 2 by 2

Here is a Compatibility Report for the Eaton Ellipse ECO 1600 UPS. Roger battery.charge: 100 battery.charge.low: 20 battery.runtime: 1575 battery.type: PbAc device.mfr: EATON device.model: Ellipse ECO 1600 device.serial: 000000000 device.type: ups driver.name: usbhid-ups driver.parameter.lowbatt: 37 driver.parameter.offdelay: 30 driver.parameter.ondelay: 40 driver.parameter.pollfreq: 30

Hello all, During discussions in several recent tickets, I've (re?)discovered that NUT codebase is not overly consistent with use of status names (e.g. `!OL` instead of `OB` in some cases), and we seem to lack a consistent approach to "ECO mode" as well (whatever vendors might mena by that, what NUT reflects it as and whether/how it shows up in the status or can be or not be