Olá Vitor, pelo que entendi, a solução seria essa:<br /><br />Nomes &lt;- c("PentaE","D18S51","D21S11","TH01","D3S1358","FGA") <br />NAgel &lt;- c(0.14970140,0.06891474,0.13054984,0.26187191,0.06763797,0.08232084)<br />NAcap &lt;- c(0.09954859,0.05968163,0.11116655,0.07833215,0.05561891,0.08612497)<br />Matriz &lt;- matrix(c(NAgel,NAcap),,2)<br /><br />library(plotrix)<br />Matriz&lt;-matrix(c(NAgel,NAcap),ncol=6,by=T)<br />barpos&lt;-barp(Matriz,main="Gráfico de Barras",col=12:13,<br />names.arg=c(Nomes),cex=0.8)<br /><br /><em>Att.<br />André Barbosa Ventura da Silva</em><br /> <br /><br />
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Em 13/08/2012 19:52, <strong>Vitor Aguiar &lt; vitor.aguiar@me.com &gt;</strong> escreveu:<br />Boa tarde,
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<div>gostaria de saber como fazer um simples gráfico de barras com o dataframe abaixo, onde as colunas 2 e 3 seriam barras consecutivas, com o nome na coluna 1 para esse grupo de 2 barras.</div>
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<div style="margin: 0px; font-size: 14.5px; font-family: Monaco; ">Names    NAgel      NAcap</div>
<div style="margin: 0px; font-size: 14.5px; font-family: Monaco; ">1       PentaE 0.14970140 0.09954859</div>
<div style="margin: 0px; font-size: 14.5px; font-family: Monaco; ">2       D18S51 0.06891474 0.05968163</div>
<div style="margin: 0px; font-size: 14.5px; font-family: Monaco; ">3       D21S11 0.13054984 0.11116655</div>
<div style="margin: 0px; font-size: 14.5px; font-family: Monaco; ">4         TH01 0.26187191 0.07833215</div>
<div style="margin: 0px; font-size: 14.5px; font-family: Monaco; ">5      D3S1358 0.06763797 0.05561891</div>
<div style="margin: 0px; font-size: 14.5px; font-family: Monaco; ">6          FGA 0.08232084 0.08612497</div>
<div style="margin: 0px; font-size: 14.5px; font-family: Monaco; "></div>
<div style="margin: 0px; font-size: 14.5px; ">Muito Obrigado,</div>
<div style="margin: 0px; font-size: 14.5px; ">Vitor</div>
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