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Muito obrigado Éder!!!!<br>
<br>
Era exatamente a função que eu procurava, funcionou
perfeitamente,<br>
<br>
Abraços,<br>
<pre class="moz-signature" cols="72">--
======================================================================
Alexandre dos Santos
Proteção Florestal
IFMT - Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso
Campus Cáceres
Caixa Postal 244
Avenida dos Ramires, s/n
Bairro: Distrito Industrial
Cáceres - MT CEP: 78.200-000
Fone: (+55) 65 8132-8112 (TIM) (+55) 65 9686-6970 (VIVO)
<a class="moz-txt-link-abbreviated" href="mailto:e-mails:alexandresantosbr@yahoo.com.br">e-mails:alexandresantosbr@yahoo.com.br</a>
<a class="moz-txt-link-abbreviated" href="mailto:alexandre.santos@cas.ifmt.edu.br">alexandre.santos@cas.ifmt.edu.br</a>
Lattes: <a class="moz-txt-link-freetext" href="http://lattes.cnpq.br/1360403201088680">http://lattes.cnpq.br/1360403201088680</a>
OrcID: orcid.org/0000-0001-8232-6722
Researchgate: <a class="moz-txt-link-freetext" href="https://www.researchgate.net/profile/Alexandre_Santos10">https://www.researchgate.net/profile/Alexandre_Santos10</a>
LinkedIn: <a class="moz-txt-link-freetext" href="https://br.linkedin.com/in/alexandre-dos-santos-87961635">https://br.linkedin.com/in/alexandre-dos-santos-87961635</a>
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</pre>
<div class="moz-cite-prefix">Em 09/03/2016 17:39, Éder Comunello
escreveu:<br>
</div>
<blockquote
cite="mid:CABmC8gkVd9cycjGrbSibCLKxNfdRztF1qUiiQ=NPON5xaWRTUQ@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_default"
style="font-family:verdana,sans-serif">Alexandre, boa tarde!</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif"><br>
</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif">Não sei se entendi
direito, mas fiz uma tentativa. Se a ideia servir dá pra
colocar na forma de uma função.</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif"><br>
</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif"><br>
</div>
<div class="gmail_default" style="">
<div class="gmail_default"><font face="monospace, monospace">###
<code r></font></div>
<div class="gmail_default"><font face="monospace, monospace">treat
<- gl(4, 15, labels = paste("t", 1:4, sep="")); treat #
Fatores</font></div>
<div class="gmail_default"><font face="monospace, monospace"><br>
</font></div>
<div class="gmail_default"><font face="monospace, monospace">#
Variables</font></div>
<div class="gmail_default"><font face="monospace, monospace">set.sed(124)</font></div>
<div class="gmail_default"><font face="monospace, monospace">sp
<- cbind(c(rnorm(10, 5, 0.25), rnorm(50, 2.5, 0.25)),
rnorm(60, 2.5, 0.25),</font></div>
<div class="gmail_default"><font face="monospace, monospace">
c(rnorm(10, 12, 0.25), rnorm(50, 2.5, 0.25)),
rnorm(60, 2.5, 0.25))</font></div>
<div class="gmail_default"><font face="monospace, monospace">colnames(sp)
<- c("sp1", "sp2", "sp3", "sp4")</font></div>
<div class="gmail_default"><font face="monospace, monospace">head(sp)</font></div>
<div class="gmail_default"><font face="monospace, monospace"><br>
</font></div>
<div class="gmail_default"><font face="monospace, monospace">#Criação
da matriz de contrastes </font></div>
<div class="gmail_default"><font face="monospace, monospace">TI
<- model.matrix(~ treat-1)</font></div>
<div class="gmail_default"><font face="monospace, monospace">head(TI)</font></div>
<div class="gmail_default"><font face="monospace, monospace"><br>
</font></div>
<div class="gmail_default"><font face="monospace, monospace">f
<- length(levels(treat))</font></div>
<div class="gmail_default"><font face="monospace, monospace">comb
<- t(combn(1:f, 2))</font></div>
<div class="gmail_default"><font face="monospace, monospace">n
<- nrow(comb)</font></div>
<div class="gmail_default"><font face="monospace, monospace"><br>
</font></div>
<div class="gmail_default"><font face="monospace, monospace">contr2
<- NULL</font></div>
<div class="gmail_default"><font face="monospace, monospace">for
(x in 1:n) {</font></div>
<div class="gmail_default"><font face="monospace, monospace">
i <- comb[x, 1]</font></div>
<div class="gmail_default"><font face="monospace, monospace">
j <- comb[x, 2]</font></div>
<div class="gmail_default"><font face="monospace, monospace">
tmp <- list(TI[,i] - TI[,j]); names(tmp) <-
paste0("TI",i, "_", j)</font></div>
<div class="gmail_default"><font face="monospace, monospace">
contr2 <- c(contr2, tmp)</font></div>
<div class="gmail_default"><font face="monospace, monospace">}</font></div>
<div class="gmail_default"><font face="monospace, monospace">contr2</font></div>
<div class="gmail_default"><font face="monospace, monospace"><br>
</font></div>
<div class="gmail_default"><font face="monospace, monospace">head(do.call(cbind,
contr2))</font></div>
<div class="gmail_default"><font face="monospace, monospace">#
TI1_2 TI1_3 TI1_4 TI2_3 TI2_4 TI3_4</font></div>
<div class="gmail_default"><font face="monospace, monospace">#
1 1 1 1 0 0 0</font></div>
<div class="gmail_default"><font face="monospace, monospace">#
2 1 1 1 0 0 0</font></div>
<div class="gmail_default"><font face="monospace, monospace">#
3 1 1 1 0 0 0</font></div>
<div class="gmail_default"><font face="monospace, monospace">#
4 1 1 1 0 0 0</font></div>
<div class="gmail_default"><font face="monospace, monospace">#
5 1 1 1 0 0 0</font></div>
<div class="gmail_default"><font face="monospace, monospace">#
6 1 1 1 0 0 0</font></div>
<div class="gmail_default"><font face="monospace, monospace">###
</code></font></div>
</div>
<div class="gmail_extra"><font face="monospace, monospace"><br>
</font></div>
<div class="gmail_extra"><br clear="all">
<div>
<div class="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr"><font style="font-size:small"
face="arial, helvetica, sans-serif">
<div style="font-family:'trebuchet
ms',sans-serif;display:inline"></div>
</font><font style="font-size:12.8px"
face="arial, helvetica, sans-serif"><span
style="font-size:small">================================================</span><br>
Éder Comunello</font>
<div style="font-size:12.8px"><span
style="font-family:arial,helvetica,sans-serif">Agronomist
(UEM), MSc in Environ. Sciences (UEM)</span><font
face="arial, helvetica, sans-serif"><br>
</font></div>
<div style="font-size:12.8px">
<div style="font-size:small"><span
style="font-family:arial,helvetica,sans-serif">DSc
in Agricultural Systems
Engineering (USP/Esalq)</span><br>
</div>
<div><span style="font-size:small">Brazilian
Agricultural Research Corporation (</span><font
style="font-size:small" face="arial,
helvetica, sans-serif">Embrapa)</font></div>
<div>
<div><font style="font-size:small"
face="arial, helvetica, sans-serif">Dourados,
MS, Brazil </font><font size="2"
face="arial, helvetica, sans-serif">|<O>|</font></div>
<div style="font-size:small"><span
style="font-family:arial,helvetica,sans-serif">================================================</span><br>
</div>
</div>
</div>
<div style="font-size:small"><font
face="arial, helvetica, sans-serif">GEO, </font>-22.2752,
-54.8182, 408m<span
style="font-family:arial,helvetica,sans-serif"><br>
</span></div>
<div style="font-size:12.8px"><span
style="font-size:small;font-family:arial,helvetica,sans-serif">UTC-04:00
/ DST: UTC-03:00</span></div>
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