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Я использую XML-пакет в R для очистки таблицы. Тем не менее, я получаю некоторые странные символы в результатах после соскабливания таблицы. Вот мои скрипты, чтобы получить таблицу:r - странные символы при получении tabledata с использованием xpathSApply
TUrlhtml <- htmlParse(htmlfile)
TUrlTable <- xpathSApply(TUrlhtml,
"//table[@class='results_table']/tr/td",
xmlValue)
И вот результат я получил:
[1] "" "\xc2\xa02 HK" "Clp Holdings Limited\xc2\xa0" "\xc2ec-00\xc2\xa0" "66.60\xc2\xa0"
[6] "\xc2\xa026-Feb-12\xc2\xa0" "\xc2\xa0" "" "\xc2\xa03 HK" "Hong Kong & China Gas Co\xc2\xa0"
[11] "\xc2un-03\xc2\xa0" "21.40\xc2\xa0" "\xc2\xa019-Mar-12\xc2\xa0" "\xc2\xa0"
Однако, когда я использовать Internet Explorer или Firefox, чтобы просмотреть файл HTML, нет абсолютно никаких проблем с самим файлом html. Как его разрешить? Большое спасибо за ваш ценный совет! Вот мой HTML-файл:
<table id="main_table" class="results_table" bgcolor="white" cellspacing="0" cellpadding="0" border="0"><thead style="background-color: white;"><tr class="top_row" style="padding-bottom: 3px; color: #0033cc"><th style="vertical-align:bottom">
<!--si--><link rel="stylesheet" href="/classes/user_interface/[email protected]@.css" type="text/css" > <div class="yui-skin-sam">
<div class="vertical_menu_panel" style="display:none">
<div class="hd" style="display:none"></div>
<div class="bd">
<ul> <li class="primary_sort_ascending"><img class="primary_sort_ascending" src="/images/primary_sort_ascending.gif"/> Sort Asc<span class="action" style="display:none">primary_sort_ascending</span></li> <li class="primary_sort_descending"><img class="primary_sort_descending" src="/images/primary_sort_descending.gif"/> Sort Desc<span class="action" style="display:none">primary_sort_descending</span></li> <li class="add_column"><img class="add_column" src="/images/add_column_left.gif"/> Add Column Here<span class="action" style="display:none">add_column</span></li> <li class="remove_column"><img class="remove_column" src="/images/subtract_small.gif"/> Remove Column<span class="action" style="display:none">remove_column</span></li> </ul>
</div>
<div class="ft" style="display:none"></div>
</div>
</div>
<input style="" type="checkbox" id="master_check_box" title="Select All">
</th> <td width="" valign="middle" align="center" nowrap><img alt="" border=0 src="/images/shim.gif" width="1" height="1"></td>
<td width="75" valign="bottom" nowrap class="txtScreen column_header"> <span style="text-decoration: underline;"><br><br><br>Ticker</span><IMG alt="" border="0" height="8" src="/images/b_sort_flat_rv.gif" width="10"> <img class="menu_icon" style="position:absolute; vertical-align:bottom; display:none" border="0" src="/images/arrow_down_button.gif"/> <span class="attributes" style="display: none"><span class="column_id">0</span><span class="display_name">Ticker</span></span></td>
<td valign="bottom" align="left" nowrap class="txtScreen column_header "><span href="#" onclick="return false"><span style="text-decoration: underline;">Company Name</span> <img class="menu_icon" style="position:absolute; vertical-align:bottom; display:none" border="0" src="/images/arrow_down_button.gif"/> <span class="attributes" style="display: none"><span class="column_id">2886069004</span><span class="display_name">Company Name</span></span></td>
<td valign="bottom" align="center" nowrap class="txtScreen column_header "><span href="#" onclick="return false"><span style="text-decoration: underline;">Last<br>Quarter<br>Date</span> <img class="menu_icon" style="position:absolute; vertical-align:bottom; display:none" border="0" src="/images/arrow_down_button.gif"/> <span class="attributes" style="display: none"><span class="column_id">2886070004</span><span class="display_name">Last Quarter Date</span></span></td>
<td valign="bottom" align="center" nowrap class="txtScreen column_header "><span href="#" onclick="return false"><span style="text-decoration: underline;">Price</span> <img class="menu_icon" style="position:absolute; vertical-align:bottom; display:none" border="0" src="/images/arrow_down_button.gif"/> <span class="attributes" style="display: none"><span class="column_id">2886071004</span><span class="display_name">Price</span></span></td>
<td valign="bottom" align="center" nowrap class="txtScreen column_header "><span href="#" onclick="return false"><span style="text-decoration: underline;">Date of<br>Last Report</span> <img class="menu_icon" style="position:absolute; vertical-align:bottom; display:none" border="0" src="/images/arrow_down_button.gif"/> <span class="attributes" style="display: none"><span class="column_id">2886072004</span><span class="display_name">Date of Last Report</span></span></td>
<td width="100%" class="txtScreen"> </td></tr>
</thead>
<tr bgcolor="#eeeeee"> <th style="height: 15px">
<input class="select_cb" type="checkbox" style="height: 13px">
<span class="attributes" style="display: none"><span class="security_id">28411</span></span>
</th>
<td valign="middle" align="center"></td>
<td align="left" nowrap class="txtScreen"> <a href="/stocks/stocks.phtml?security_id=28411&ticker=2+HK" target="_parent" >2 HK</a></td>
<td align="left" nowrap class="txtScreen" title="Company Name">Clp Holdings Limited </td>
<td align="right" nowrap class="txtScreen" title="Last Quarter Date"> Dec-00 </td>
<td align="right" nowrap class="txtScreen" title="Price">66.60 </td>
<td align="right" nowrap class="txtScreen" title="Date of Last Report"> 26-Feb-12 </td>
<td bgcolor="#ffffff"> </td> </tr>
<tr bgcolor="#ffffff"> <th style="height: 15px">
<input class="select_cb" type="checkbox" style="height: 13px">
<span class="attributes" style="display: none"><span class="security_id">48569</span></span>
</th>
<td valign="middle" align="center"></td>
<td align="left" nowrap class="txtScreen"> <a href="/stocks/stocks.phtml?security_id=48569&ticker=3+HK" target="_parent" >3 HK</a></td>
<td align="left" nowrap class="txtScreen" title="Company Name">Hong Kong & China Gas Co </td>
<td align="right" nowrap class="txtScreen" title="Last Quarter Date"> Jun-03 </td>
<td align="right" nowrap class="txtScreen" title="Price">21.40 </td>
<td align="right" nowrap class="txtScreen" title="Date of Last Report"> 19-Mar-12 </td>
<td bgcolor="#ffffff"> </td> </tr>
</table>
в вашем примере xml .. нет таблицы screening_results_table..maybe вы имели в виду '[@ class = results_table]'? – agstudy
@agstudy: да, вы правы, я имел в виду [@ class = results_table], извините за опечатку. Есть ли у вас идеи о том, как их решить? Я достаточно свежий для html;) Я хочу получить значения таблицы (без какого-либо формата), включая заголовки в таблице. – Joyce
Попробуйте это 'as.data.frame (readHTMLTable (TurlHtml)' – agstudy