<div dir="ltr"><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif">Na consulta a documentação da print.xtable() suspeitei que latex.environments= seria a solução. O teste confirmou a suspeita. O CMR abaixo gera um tabela com legenda ambos alinhados à esquerda. A documentação traz mais detalhes.</div>
<div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><br></div><div class="gmail_default"><div class="gmail_default"><font face="courier new, monospace">\documentclass[a4paper,10pt]{article}</font></div>
<div class="gmail_default"><font face="courier new, monospace">\usepackage[utf8]{inputenc}</font></div><div class="gmail_default"><span style="font-family:'courier new',monospace">\usepackage[singlelinecheck=false]{caption} </span><br>
</div><div class="gmail_default"><font face="courier new, monospace"><br></font></div><div class="gmail_default"><font face="courier new, monospace">\begin{document}</font></div><div class="gmail_default"><font face="courier new, monospace"><br>
</font></div><div class="gmail_default"><font face="courier new, monospace"><<results="asis">>=</font></div><div class="gmail_default"><font face="courier new, monospace">require(xtable)</font></div>
<div class="gmail_default"><font face="courier new, monospace">print(xtable(iris[1:5,1:3], caption="Legenda curta."),</font></div><div class="gmail_default"><font face="courier new, monospace"> caption.placement="top",</font></div>
<div class="gmail_default"><font face="courier new, monospace"> <b>latex.environments="flushleft"</b>)</font></div><div class="gmail_default"><font face="courier new, monospace">## ajuda...</font></div><div class="gmail_default">
<font face="courier new, monospace">## help(print.xtable, help_type="html")</font></div><div class="gmail_default"><font face="courier new, monospace">## latex.environments = ,</font></div><div class="gmail_default">
<font face="courier new, monospace">@ </font></div><div class="gmail_default"><font face="courier new, monospace"><br></font></div><div class="gmail_default"><font face="courier new, monospace">\end{document}</font></div>
<div style="font-family:'trebuchet ms',sans-serif"><br></div></div><div class="gmail_default"><div class="gmail_default">À disposição.</div><div class="gmail_default">Walmes.</div></div></div>