<div><font face="trebuchet ms,sans-serif">Além da sugestão do PJ, você pode fazer isso com o comando stack(), reshape::melt() e plyr::adply(). Um exemplo disponível em</font></div><div><font face="trebuchet ms,sans-serif"><br>
</font></div><div><a href="http://ridiculas.wordpress.com/2011/05/22/converter-dados-em-formato-amplo-e-formato-longo/">http://ridiculas.wordpress.com/2011/05/22/converter-dados-em-formato-amplo-e-formato-longo/</a></div>
<div><br></div><div>À disposição.</div><div>Walmes.</div><font face="trebuchet ms,sans-serif"><br clear="all"></font><span style="font-family:trebuchet ms,sans-serif">==========================================================================</span><br style="font-family:trebuchet ms,sans-serif">
<span style="font-family:trebuchet ms,sans-serif">Walmes Marques Zeviani</span><br style="font-family:trebuchet ms,sans-serif"><span style="font-family:trebuchet ms,sans-serif">LEG (Laboratório de Estatística e Geoinformação, 25.450418 S, 49.231759 W)</span><br style="font-family:trebuchet ms,sans-serif">
<span style="font-family:trebuchet ms,sans-serif">Departamento de Estatística - Universidade Federal do Paraná</span><br style="font-family:trebuchet ms,sans-serif"><span style="font-family:trebuchet ms,sans-serif">fone: (+55) 41 3361 3573</span><br style="font-family:trebuchet ms,sans-serif">
<span style="font-family:trebuchet ms,sans-serif">VoIP: (3361 3600) 1053 1173</span><br style="font-family:trebuchet ms,sans-serif"><span style="font-family:trebuchet ms,sans-serif">e-mail: <a href="mailto:walmes@ufpr.br" target="_blank">walmes@ufpr.br</a></span><br style="font-family:trebuchet ms,sans-serif">
<span style="font-family:trebuchet ms,sans-serif">twitter: @walmeszeviani</span><br style="font-family:trebuchet ms,sans-serif"><span style="font-family:trebuchet ms,sans-serif">homepage: <a href="http://www.leg.ufpr.br/%7Ewalmes" target="_blank">http://www.leg.ufpr.br/~walmes</a></span><br style="font-family:trebuchet ms,sans-serif">
<span style="font-family:trebuchet ms,sans-serif">linux user number: 531218</span><br style="font-family:trebuchet ms,sans-serif"><span style="font-family:trebuchet ms,sans-serif">==========================================================================</span><br>