From: Pen Ttt <myocean135@...>
Date: 2010-08-29T11:37:21+09:00
Subject: Re: select tr>3  with nokogiri

i found some secret,if my file  /home/pt/mytest  was changed into:
<table>
<tr bgcolor="F3F3F3">
<td align="right" width="240"  class="tickerSm">reportdate</td>
  <td align="right" width="65" class="tickerSm">10/31/09</td>
  <td align="right" width="65" class="tickerSm">10/31/08</td>
  <td align="right" width="65" class="tickerSm">10/31/07</td>
  <td align="right" width="65" class="tickerSm">10/31/06</td>
  <td align="right" width="65" class="tickerSm">10/31/05</td>
  </tr>
<tr bgcolor="ffffff">
<td class="tickerSm">Cash &amp; Equivalents</td>
  <td align="right" class="ticker">2,493</td>
  <td align="right" class="ticker">1,429</td>
  <td align="right" class="ticker">1,826</td>
  <td align="right" class="ticker">2,262</td>
  <td align="right" class="ticker">2,251</td>
  </tr>
<tr bgcolor="ffffff">
<td class="ticker">Receivables</td>
  <td align="right" class="ticker">595</td>
  <td align="right" class="ticker">770</td>
  <td align="right" class="ticker">735</td>
  <td align="right" class="ticker">692</td>
  <td align="right" class="ticker">753</td>
  </tr>
<tr bgcolor="ffffff">
<td class="ticker">Notes Receivable</td>
  <td align="right" class="ticker">0</td>
  <td align="right" class="ticker">0</td>
  <td align="right" class="ticker">0</td>
  <td align="right" class="ticker">0</td>
  <td align="right" class="ticker">0</td>
  </tr>
<tr bgcolor="ffffff">
<td class="ticker">Inventories</td>
  <td align="right" class="ticker">552</td>
  <td align="right" class="ticker">646</td>
  <td align="right" class="ticker">643</td>
  <td align="right" class="ticker">627</td>
  <td align="right" class="ticker">722</td>
  </tr>
<table>

with the code ,
  require 'rubygems'
  require 'nokogiri'
  doc = Nokogiri::HTML.parse(open('/home/pt/mytest'))
  result=doc.xpath('//table/tr[*[not(@class="tickerSm")]]')
  puts result

what i can get is:
<tr bgcolor="ffffff">
<td class="tickerSm">Cash &amp; Equivalents</td>
  <td align="right" class="ticker">2,493</td>
  <td align="right" class="ticker">1,429</td>
  <td align="right" class="ticker">1,826</td>
  <td align="right" class="ticker">2,262</td>
  <td align="right" class="ticker">2,251</td>
  </tr>
<tr bgcolor="ffffff">
<td class="ticker">Receivables</td>
  <td align="right" class="ticker">595</td>
  <td align="right" class="ticker">770</td>
  <td align="right" class="ticker">735</td>
  <td align="right" class="ticker">692</td>
  <td align="right" class="ticker">753</td>
  </tr>
<tr bgcolor="ffffff">
<td class="ticker">Notes Receivable</td>
  <td align="right" class="ticker">0</td>
  <td align="right" class="ticker">0</td>
  <td align="right" class="ticker">0</td>
  <td align="right" class="ticker">0</td>
  <td align="right" class="ticker">0</td>
  </tr>
<tr bgcolor="ffffff">
<td class="ticker">Inventories</td>
  <td align="right" class="ticker">552</td>
  <td align="right" class="ticker">646</td>
  <td align="right" class="ticker">643</td>
  <td align="right" class="ticker">627</td>
  <td align="right" class="ticker">722</td>
  </tr>

the row  can not be selected by my code,
<tr bgcolor="F3F3F3">
<td align="right" width="240"  class="tickerSm">reportdate</td>
  <td align="right" width="65" class="tickerSm">10/31/09</td>
  <td align="right" width="65" class="tickerSm">10/31/08</td>
  <td align="right" width="65" class="tickerSm">10/31/07</td>
  <td align="right" width="65" class="tickerSm">10/31/06</td>
  <td align="right" width="65" class="tickerSm">10/31/05</td>
  </tr>
<tr bgcolor="ffffff">

but how  to  delete row with xpath?

<tr bgcolor="ffffff">
<td class="tickerSm">Cash &amp; Equivalents</td>
  <td align="right" class="ticker">2,493</td>
  <td align="right" class="ticker">1,429</td>
  <td align="right" class="ticker">1,826</td>
  <td align="right" class="ticker">2,262</td>
  <td align="right" class="ticker">2,251</td>
  </tr>
it can't work  :
xpath('//table/tr[*[not(@class="tickerSm")]]')
maybe the reason is : some class of td is "ticker",another is 
"tickerSm",
if i don't want to  select it with xpath,how to express it with xpath??
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