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    Obrigado Rafael,<br>
    <br>
               Mas infelizmente já havia visto esse post do
    stackoverflow. Eu acho que deve funcionar bem para http (mas não
    testei), mas no caso do dropbox que usa https não, quando tento a
    sua sugestão ocorre o erro:<br>
    <br>
    Erro em function (type, msg, asError = TRUE)  : <br>
      SSL certificate problem: unable to get local issuer certificate<br>
    <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>                   
======================================================================</pre>
    <br>
    <div class="moz-cite-prefix">On 14/01/2015 11:55, Fernando Souza
      wrote:<br>
    </div>
    <blockquote cite="mid:54B68346.7000108@gmail.com" type="cite">
      <meta content="text/html; charset=windows-1252"
        http-equiv="Content-Type">
      <div class="moz-cite-prefix">On 14/01/2015 11:37, Rafael Tieppo
        wrote:<br>
      </div>
      <blockquote
cite="mid:1948019653.1023192.1421246238220.JavaMail.yahoo@jws10682.mail.bf1.yahoo.com"
        type="cite">
        <div style="color:#000; background-color:#fff;
          font-family:lucida console, sans-serif;font-size:13px">
          <div dir="ltr" id="yui_3_16_0_1_1421245662500_4102"><span
              id="yui_3_16_0_1_1421245662500_4397">Prezado, passei por
              algo semelhante. Solução:<br>
            </span></div>
          <div id="yui_3_16_0_1_1421245662500_4398" dir="ltr">crédito: <a
              moz-do-not-send="true" class="moz-txt-link-rfc2396E"
href="http://stackoverflow.com/questions/3236651/read-data-from-internet">"http://stackoverflow.com/questions/3236651/read-data-from-internet"</a><br>
          </div>
          <div id="yui_3_16_0_1_1421245662500_4445"><br>
          </div>
          <div id="yui_3_16_0_1_1421245662500_4600" dir="ltr">Usei o
            pacote RCurl, comandos básicos:</div>
          <div id="yui_3_16_0_1_1421245662500_4582" dir="ltr">library(RCurl)<br>
          </div>
          <div id="yui_3_16_0_1_1421245662500_4569" dir="ltr">DADOS
            <-
            read.csv(textConnection(getURL("LINK_DO_SEU_ARQUIVO")),
            sep=",", head=T)<br>
          </div>
          <div id="yui_3_16_0_1_1421245662500_4446"><br>
          </div>
          <div id="yui_3_16_0_1_1421245662500_4601" dir="ltr">Saudações<br>
          </div>
          <div id="yui_3_16_0_1_1421245662500_4129" class="signature">
            <div id="yui_3_16_0_1_1421245662500_4128"><font
                id="yui_3_16_0_1_1421245662500_4131"
                style="font-family:tahoma, 'new york', times,
                serif;line-height:normal;" size="1"><span
                  id="yui_3_16_0_1_1421245662500_4154"
                  class="yui_3_7_2_18_1354538511367_65"
                  style="font-family:verdana, helvetica,
                  sans-serif;font-weight:bold;">Rafael Tieppo</span><br
                  style="font-family:verdana, helvetica, sans-serif;">
              </font>
              <div><font id="yui_3_16_0_1_1421245662500_4131"
                  style="font-family:tahoma, 'new york', times,
                  serif;line-height:normal;" size="1"><span
                    id="yui_3_16_0_1_1421245662500_4259"
                    class="yui_3_7_2_18_1354538511367_67"
                    style="font-family:verdana, helvetica, sans-serif;">UNEMAT

                    - </span><span id="yui_3_16_0_1_1421245662500_4255"
                    class="yui_3_7_2_18_1354538511367_73"
                    style="font-family:verdana, helvetica, sans-serif;"><span
                      style="font-weight:bold;">site</span>:</span><span
                    id="yui_3_16_0_1_1421245662500_4254"
                    class="yui_3_7_2_18_1354538511367_75"
                    style="font-family:verdana, helvetica, sans-serif;"> <a
                      moz-do-not-send="true"
                      id="yui_3_16_0_1_1421245662500_4253"
                      rel="nofollow" target="_blank"
                      href="http://www2.unemat.br/rafaeltieppo">http://www2.unemat.br/rafaeltieppo </a></span></font></div>
              <div id="yui_3_16_0_1_1421245662500_4610" dir="ltr"><font
                  class="" id="yui_3_16_0_1_1421245662500_4131"
                  style="font-family:tahoma, 'new york', times,
                  serif;line-height:normal;" size="1"><span
                    id="yui_3_16_0_1_1421245662500_4259" class=""
                    style="font-family:verdana, helvetica, sans-serif;"></span><span
                    id="yui_3_16_0_1_1421245662500_4255" class=""
                    style="font-family:verdana, helvetica, sans-serif;"><span
                      class="" style="font-weight:bold;">blog</span></span></font>
                - <a moz-do-not-send="true"
                  id="yui_3_16_0_1_1421245662500_4609"
                  href="https://sistemasagricolas.wordpress.com/">https://sistemasagricolas.wordpress.com/</a><br>
              </div>
              <div><font id="yui_3_16_0_1_1421245662500_4131"
                  style="font-family:tahoma, 'new york', times,
                  serif;line-height:normal;" size="1"><span
                    id="yui_3_16_0_1_1421245662500_4254"
                    class="yui_3_7_2_18_1354538511367_75"
                    style="font-family:verdana, helvetica, sans-serif;"></span></font><br>
              </div>
              <div id="yui_3_16_0_1_1421245662500_4605"><font
                  id="yui_3_16_0_1_1421245662500_4131"
                  style="font-family:tahoma, 'new york', times,
                  serif;line-height:normal;" size="1"><span
                    id="yui_3_16_0_1_1421245662500_4130"
                    class="yui_3_7_2_18_1354538511367_76"
                    style="font-family:verdana, helvetica, sans-serif;"><br>
                  </span></font></div>
              <div id="yui_3_16_0_1_1421245662500_4606"><font
                  id="yui_3_16_0_1_1421245662500_4131"
                  style="font-family:tahoma, 'new york', times,
                  serif;line-height:normal;" size="1"><span
                    id="yui_3_16_0_1_1421245662500_4130"
                    class="yui_3_7_2_18_1354538511367_76"
                    style="font-family:verdana, helvetica, sans-serif;">"Evite

                    o desperdício: antes de imprimir pense na sua
                    responsabilidade com o ambiente".  </span></font></div>
            </div>
          </div>
          <br>
          <div class="qtdSeparateBR"><br>
            <br>
          </div>
          <div id="yui_3_16_0_1_1421245662500_4147" style="display:
            block;" class="yahoo_quoted">
            <div id="yui_3_16_0_1_1421245662500_4146"
              style="font-family: lucida console, sans-serif; font-size:
              13px;">
              <div id="yui_3_16_0_1_1421245662500_4145"
                style="font-family: HelveticaNeue, Helvetica Neue,
                Helvetica, Arial, Lucida Grande, sans-serif; font-size:
                16px;"><br>
              </div>
            </div>
          </div>
        </div>
        <br>
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        <br>
        <pre wrap="">_______________________________________________
R-br mailing list
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:R-br@listas.c3sl.ufpr.br">R-br@listas.c3sl.ufpr.br</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://listas.inf.ufpr.br/cgi-bin/mailman/listinfo/r-br">https://listas.inf.ufpr.br/cgi-bin/mailman/listinfo/r-br</a>
Leia o guia de postagem (<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.leg.ufpr.br/r-br-guia">http://www.leg.ufpr.br/r-br-guia</a>) e forneça código mínimo reproduzível.</pre>
      </blockquote>
      Eu utilizo o pacote "repmis" , conforme link<br>
      <a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://exploredata.wordpress.com/2014/11/28/importing-data-from-dropbox-into-r/">https://exploredata.wordpress.com/2014/11/28/importing-data-from-dropbox-into-r/</a><br>
      <br>
      <br>
      <hr style="border:none; color:#909090; background-color:#B0B0B0;
        height: 1px; width: 99%;">
      <table style="border-collapse:collapse;border:none;">
        <tbody>
          <tr>
            <td style="border:none;padding:0px 15px 0px 8px"> <a
                moz-do-not-send="true" href="http://www.avast.com/"> <img
                  moz-do-not-send="true"
                  src="http://static.avast.com/emails/avast-mail-stamp.png"
                  border="0"> </a> </td>
            <td>
              <p style="color:#3d4d5a;
                font-family:"Calibri","Verdana","Arial","Helvetica";
                font-size:12pt;"> Este email foi escaneado pelo Avast
                antivírus. <br>
                <a moz-do-not-send="true" href="http://www.avast.com/">www.avast.com</a>
              </p>
            </td>
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      <br>
      <br>
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      <br>
      <pre wrap="">_______________________________________________
R-br mailing list
<a class="moz-txt-link-abbreviated" href="mailto:R-br@listas.c3sl.ufpr.br">R-br@listas.c3sl.ufpr.br</a>
<a class="moz-txt-link-freetext" href="https://listas.inf.ufpr.br/cgi-bin/mailman/listinfo/r-br">https://listas.inf.ufpr.br/cgi-bin/mailman/listinfo/r-br</a>
Leia o guia de postagem (<a class="moz-txt-link-freetext" href="http://www.leg.ufpr.br/r-br-guia">http://www.leg.ufpr.br/r-br-guia</a>) e forneça código mínimo reproduzível.</pre>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">
</pre>
  
<br /><br />
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                <td style='border:none;padding:0px 15px 0px 8px'>
                        <a href="http://www.avast.com/">
                                <img border=0 src="http://static.avast.com/emails/avast-mail-stamp.png" />
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                        <p style='color:#3d4d5a; font-family:"Calibri","Verdana","Arial","Helvetica"; font-size:12pt;'>
                                Este email foi escaneado pelo Avast antivírus.
                                <br><a href="http://www.avast.com/">www.avast.com</a>
                        </p>
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