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
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 s
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
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) .
Look
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 (ยต) 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
Just to say, I got this solved.
On Wed, Jul 20, 2011 at 7:55 PM, Roland Sookias 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 single model.
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
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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 exponentiall
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?
B
Hello,
I'm very impressed with the prospect of using grofit. It seems to be as
impressive as the Markov msm unit that I've worked with.
I would like to ask: can someone say something about how the starting values
(as well as the values for each time point) are estimated?
That is, is the curve built
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
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