We have a doubt on whether we are applying a lme model correctly.
Our experimental/sampling design is as follows:
We are studying the relationship between two quantitative and continuous
variables at different sampling stations along a transect in the ocean. At each
station, we take three w
Not sure about the first question without knowing more about your model and
research aims. As for the second, there are a number of methods that can be
used to select models--F tests and other variance comparisons being among the
most common. Given your examiner's comment about parsimony, I'm t
Hi,
I am looking at the effect of allelochemicals produced by two freshwater
macrophyte species on two different algal species at different days. I am
comparing the effect of each macrophyte on each algae at each day. I received
help from someone doing the LMEM (Linear mixed-effect models) and
On Fri, 13 Nov 2009, milton ruser wrote:
Hi Ana, you did again :-)
require(fortunes)
fortune("dog")
Firstly, don't call your matrix 'matrix'. Would you call your dog 'dog'?
Anyway, it might clash with the function 'matrix'.
-- Barry Rowlingson
R-help (October 2004)
if you call your dat
Hi Ana, you did again :-)
> require(fortunes)
> fortune("dog")
Firstly, don't call your matrix 'matrix'. Would you call your dog 'dog'?
Anyway, it might clash with the function 'matrix'.
-- Barry Rowlingson
R-help (October 2004)
if you call your data "data" you will crach data() function.
Douglas Bates-2 wrote:
>
> On Thu, Nov 12, 2009 at 10:14 AM, milton ruser
> wrote:
>> Hi Ana,
>>
>> I am not quite sure if it is the problem, but if you call your data.frame
>> as
>> exp,
>> you will crash exp() function... try use another name for your
>> data.frame.
>>
>> By the way, I sugge
On Thu, Nov 12, 2009 at 10:14 AM, milton ruser wrote:
> Hi Ana,
>
> I am not quite sure if it is the problem, but if you call your data.frame as
> exp,
> you will crash exp() function... try use another name for your data.frame.
>
> By the way, I suggest you not use attach().
>
> Try something lik
Hi Ana,
I am not quite sure if it is the problem, but if you call your data.frame as
exp,
you will crash exp() function... try use another name for your data.frame.
By the way, I suggest you not use attach().
Try something like model<-lme(weight~date*diet, data=yourdataframe)
good luck
milton
Milton's point is dead-on, and I would highly encourage you to give the
posting guide a look.
That said... you might try "na.action = na.omit" in your call to...
actually, we don't know what function you are using (see first point).
Regardless, sounds like you have missing data and na.action
Milton's point is dead-on, and I would highly encourage you to give the
posting guide a look.
That said... you might try "na.action = na.omit" in your call to...
actually, we don't know what function you are using (see first point).
Regardless, sounds like you have missing data and na.action is
Dear Ana Golveia,
It is completelly impossible someone realise what kind or help you need or
what is happening. I suggest you give a look on the posting guide, mainly
that part about a minimum reproducible code with self explaining
information, etc.
Cheers
milton
On Wed, Nov 11, 2009 at 7:22 AM
CAN ANYONE PLEASE HELP ME WITH THIS
i HAVE TO DO A MIXED EFFECT LINEAR MODEL WITH MY DATA DUE TO THE FACT THAT I
have pseudoreplication!
Although after reading and trying it for several times can get around due to
"Error in na.fail.default(list(date = c(1L, 2L, 3L, 4L, 5L, 6L, 7L, 8L, :
missing v
12 matches
Mail list logo
