[R] grofit issues with replicates - probit or logit or glmm

Hello I tried use grofit package in our data set. We provide a subset of our data with X iso, and 4 doses, and insect died was count each day for long 5 days. We started with Y insects per dishes. When one is dead, it was counted and removed. Died insect is cumulative in the next days. i.e. day 1

Re: [R] grofit package problem inputting dataset

Your csv output doesn't have any commas in it. Your email is in HTML format so we cannot trust it to show what is really there (read the Posting Guide). The sink function forwards stuff that would have been printed to a file, but that isn't a particularly good way to exchange data with other

[R] grofit package problem inputting dataset

I've recently wanted to analyze some data sets of growth curves; so, I decided to try out the grofit package the dataset inputting gave me some issues. I've been trying to replicate the example from the grofit package with R foo - ran.data(100, 25) time - foo$time data - foo$data

[R] Grofit package parameters

Good afternoon, I am using the function gcFitModel() from grofit package for modelling grass growth pattern over time. Besides the usual parameters that come out from the model, i.e. A, mu and lambda, I am interested in finding the timepoint at which A is reached (what I call the day_max) .

[R] grofit

Hi, I'm a new user of R I'm using grofit package to fit the grouth curve, but what I actually need is parameters: maximum slope (µ) and the maximum cell growth (A). Can you please explain , how can I get them (for all curves)? Thees parameters are objects from gcFitModel, but i didn't managed

Re: [R] Grofit

Just to say, I got this solved. On Wed, Jul 20, 2011 at 7:55 PM, Roland Sookias r.sook...@gmail.com wrote: Hi Is it possible to use grofit to get the AIC of several (e.g. two) growth models and compare both these and model parameters? All I can get it to do so far is return parameters for a

[R] Grofit

Hi Is it possible to use grofit to get the AIC of several (e.g. two) growth models and compare both these and model parameters? All I can get it to do so far is return parameters for a single model. Cheers Roland [[alternative HTML version deleted]]

[R] grofit package

Does anyone know if it is possible to get the length of the log phase (the main growth phase) from a grofit logistic model? I can get the lag phase length, maximum growth and max rate of growth, but I also want to know the length of the log phase (ie, for how long do the bacteria grow

[R] grofit package

Dear All, I want to use grofit package for biological growth curves. My dataset only includes age variable and size variable. I want to use logistic, gompertz and richards growth curves to predict age from size. How can I implement this data set to the function in grofit package? Best

[R] grofit

Hello, I would like to ask about the statistic used for initial values for models built with grofit. Is the mean (of the experiments or cases) at t1 used? Also at the other time points? regards, Russell [[alternative HTML version deleted]] __