<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div><span>Bom dia senhores!</span></div><div><br><span></span></div><div><span>Suponhamos que eu tenha o seguinte vetor:</span></div><div><br><span></span></div><div><span>nfa <- c('A','JA','K','K:P','P:K','K:P:N')</span></div><div><br><span></span></div><div><span>Se eu quero extrair as palavras com a pontuação : então:<br></span></div><div><span>nfa[grep('[[:punct:]]',nfa)]</span></div><div><span>ou<br></span></div><div><span>nfa[grep(':',nfa)]</span></div><div><br><span></span></div><div><span>No entanto, como eu faço para extrair as palavras que tem as duas pontuações, ou seja, no caso acima 'K:P:N'?</span></div><div><br><span></span></div><div><span>Desde já grato!</span></div><div><br><span></span></div><div><span>(S,f,P)</span></div><div><span>Allaman<br></span></div><div> </div><div
style="background-color:transparent;" align="center"><font style="background-color:transparent;" face="comic sans ms" size="2"><font size="1"><b><br></b></font></font></div><div style="text-align:left;background-color:transparent;" align="center"><font style="background-color:transparent;"><font face="courier, monaco, monospace, sans-serif" size="2">\begin{signature}</font></font></div><div style="text-align:left;background-color:transparent;" align="center"><font style="background-color:transparent;"><font face="courier, monaco, monospace, sans-serif" size="2"><<>>=</font></font></div><div style="text-align:left;background-color:transparent;" align="center"><font class="Apple-style-span" face="courier, monaco, monospace, sans-serif" size="2">Prof. Dr. Ivan Bezerra Allaman</font></div><div style="text-align:left;background-color:transparent;" align="center"><font class="Apple-style-span" face="courier, monaco, monospace, sans-serif"
size="2">Universidade Estadual de Santa Cruz</font></div><div style="text-align:left;background-color:transparent;" align="center"><font class="Apple-style-span" face="courier, monaco, monospace, sans-serif" size="2">Departamento de Ciências Exatas e Tecnológicas</font></div><div style="text-align:left;background-color:transparent;" align="center"><font class="Apple-style-span" face="courier, monaco, monospace, sans-serif" size="2">Ilhéus/BA - Brasil</font></div><div style="text-align:left;background-color:transparent;" align="center"><font class="Apple-style-span" face="courier, monaco, monospace, sans-serif" size="2">Fone: +55 73 3680-5596</font></div><div style="text-align:left;background-color:transparent;" align="center"><font class="Apple-style-span" face="courier, monaco, monospace, sans-serif" size="2">E-mail: ivanalaman@yahoo.com.br/ivanalaman@gmail.com</font></div><div style="text-align:left;background-color:transparent;"
align="center"><font style="background-color:transparent;"><font face="courier, monaco, monospace, sans-serif" size="2">@</font></font></div><div style="text-align:left;background-color:transparent;" align="center"><font style="background-color:transparent;"><font face="courier, monaco, monospace, sans-serif" size="2">\end{signature}</font></font></div></div></body></html>