Dear R users,
I am analyzing data using a COZIGAM model
The model is:
res - cozigam(Clupeidae~s(temperature,salinity), constraint =
proportional, family = gaussian)
Clupeidae = abundance (from 132 observed 85 items=0 ), LDH = log of a
distance that I am interested in, and
SI3 = is a index
Hi groups
i want plot of phytoplankton density on base of Lon lat, as same as
the description on the cozigam package.
but the main problem is the form of matrix Lon parameters in the example
on eggdata that is negative ,how changed the longitude to this form ?
thanks all
Mahnaz
I don't completely understand your question, but is it perhaps that
west longitude is often represented as negative?
Otherwise, please provide a reproducible example, using data from the
cogizam package if you'd like, or at least a clear guide to where
you've found this example and how it differs
Hello Mahnaz,
Longitude is often expressed as distance or angle east of the prime
meridian, so negative means it is west. If I am reading your question
correctly, you are wondering how to change the longitude to make it negative?
If so, you could create a new variable that is -1 times the
Hello Mahnaz,
I have not used the cozigam package, but I would guess that if your
longitude coordinates are for the western hemisphere you will want to have them
negative. If they are for the eastern hemisphere then what you have is correct.
You can check that they are displaying properly
Hi, everybody
i´m new in this, I need help for work in ENFA anlyses and determine the
habitat selection of a marine specie, i have a data matrix with
oceanographic variables linked to specie presence and i have another matrix
with the same variables but wihtout the presence of the specie
Dear Carolina,
I already replied to your question on R-sig-Geo [1]. Please avoid
cross-posting and continue there if any additional help is required. You
may want to read the R posting guide [2], too.
Mathieu.
[1] https://stat.ethz.ch/pipermail/r-sig-geo/2012-July/015538.html
[2]
