Displaying 6 results from an estimated 6 matches for "marcos_sanches".
2001 Aug 16
1
Pie Chart
I've just started using R and I would like to know how to do a pie
chart; The "pie" comand does not exist in the R I am using, why?
Thanks,
Marcos
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2001 Sep 11
1
String variables in GLM
Hello!
I have a dataset with variables in string format (ages class and sex) which
I want to recode as numerical variables. How can I accomplish this? Is
there any way to do that automatically? Could someone help me?
Thanks in advance,
Marcos
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2001 Sep 20
1
How to get residuals with arima0? [fwd]
[accidentally sent to owner-r-help -- please do NOT!
it's "r-help" !]
------- start of forwarded message -------
From: Marcos_Sanches at gallup.com
To: owner-r-help at stat.math.ethz.ch
Subject: How to get residuasl with arima0?
Date: Wed, 19 Sep 2001 15:19:07 -0300
I know this is a basic question, but I've never used the 'ts' package and
I'm having some problem with it. If I type, for example:
>fit1<-ar...
2002 Mar 11
1
Spectral decomposition
Hello all,
I have the square symetric matrix A:
2 1 1
1 2 1
1 1 2
My first question is what is the easiest way to enter this matriz in R?
Second, matrix A has an eigenvalue with multiplicity 2, in this case, how
could I find the two related ortogonal eigenvectors given below by R,
without the help of R, I mean, I want to know how R calculate this
eigenvectors related to the same eigenvalue.
2003 Nov 17
1
Generalized linear model
Hi all!
I am fitting a Poisson model, using the following command:
> fit2<-glm(canc~id1+year1+time+lnpa,family=poisson)
where 'id1', 'year1' and 'time' are factors. I defined them with:
> id1<-C(factor(id1), treatment)
and 'lnpa' is a continuous variable.
The 'summary' function gives me all the effects estimates, that is, for id1,
I
2002 May 02
3
Surface Graphic
Hello list!
I have a problem with the function 'persp'. I have a data set with the
variables
X -> The X coordenate of the insect
Y -> The Y coordenate of the insect
deep-> how deep the insect buried into the soil.
I would like to have a plot with a surface simulating the way the insect
buried. Is it possible? If I type
persp(x,y,deep)
R gives me this error message
Error in