我有这个xml文件,我想将其转换为数据框：
data.xml中
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?> - <graph_data xmlns:ns2="http://www.w3.org/2005/Atom"> <graph_property name="calculation_method" value="Geo Mean" /> <graph_property name="graph_type" value="TIME" /> - <measurement id="521406"> <alias>site4</alias> - <bucket_data> - <bucket id="1" name="2013-MAY-14 07:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="21" /> <perf_data unit="seconds" value="3.102" /> </bucket> - <bucket id="2" name="2013-MAY-14 08:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="13" /> <perf_data unit="seconds" value="3.052" /> </bucket> - <bucket id="3" name="2013-MAY-14 09:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="3.387" /> </bucket> - <bucket id="4" name="2013-MAY-14 10:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="3.338" /> </bucket> - <bucket id="5" name="2013-MAY-14 11:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="2.149" /> </bucket> - <bucket id="6" name="2013-MAY-14 12:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="13" /> <perf_data unit="seconds" value="3.202" /> </bucket> - <bucket id="7" name="2013-MAY-14 01:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="18" /> <perf_data unit="seconds" value="2.883" /> </bucket> - <bucket id="8" name="2013-MAY-14 02:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="2.582" /> </bucket> - <bucket id="9" name="2013-MAY-14 03:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="2.769" /> </bucket> - <bucket id="10" name="2013-MAY-14 04:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="12" /> <perf_data unit="seconds" value="2.669" /> </bucket> - <bucket id="11" name="2013-MAY-14 05:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="2.830" /> </bucket> - <bucket id="12" name="2013-MAY-14 06:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="12" /> <perf_data unit="seconds" value="2.591" /> </bucket> - <bucket id="13" name="2013-MAY-14 07:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="3.213" /> </bucket> - <bucket id="14" name="2013-MAY-14 08:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="2.653" /> </bucket> - <bucket id="15" name="2013-MAY-14 09:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="2.935" /> </bucket> - <bucket id="16" name="2013-MAY-14 10:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="18" /> <perf_data unit="seconds" value="2.495" /> </bucket> - <bucket id="17" name="2013-MAY-14 11:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="3.169" /> </bucket> - <bucket id="18" name="2013-MAY-15 12:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="16" /> <perf_data unit="seconds" value="2.789" /> </bucket> - <bucket id="19" name="2013-MAY-15 01:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="16" /> <perf_data unit="seconds" value="3.245" /> </bucket> - <bucket id="20" name="2013-MAY-15 02:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="3.281" /> </bucket> - <bucket id="21" name="2013-MAY-15 03:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="12" /> <perf_data unit="seconds" value="3.773" /> </bucket> - <bucket id="22" name="2013-MAY-15 04:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="21" /> <perf_data unit="seconds" value="2.648" /> </bucket> - <bucket id="23" name="2013-MAY-15 05:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="3.291" /> </bucket> - <bucket id="24" name="2013-MAY-15 06:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="12" /> <perf_data unit="seconds" value="3.084" /> </bucket> </bucket_data> - <graph_option> <data_cell name="perfwarning" unit="seconds" value="-" /> <data_cell name="perfcritical" unit="seconds" value="-" /> <data_cell name="availwarning" unit="percent" value="-" /> <data_cell name="availcritical" unit="percent" value="-" /> <data_cell name="bucketsize" unit="seconds" value="3600" /> <data_cell name="rows" unit="#" value="24" /> <data_cell name="pagecomponent" unit="seconds" value="Total Time" /> <data_cell name="avg_perf" unit="seconds" value="2.949" /> <data_cell name="avg_avail" unit="percent" value="100.00" /> <data_cell name="total_datapoint_count" unit="#" value="347" /> <data_cell /> </graph_option> </measurement> - <measurement id="521406"> <alias>Site3</alias> - <bucket_data> - <bucket id="1" name="2013-MAY-14 07:00 AM"> <avail_data unit="percent" value="85.71" /> <data_count unit="#" value="18" /> <perf_data unit="seconds" value="6.503" /> </bucket> - <bucket id="2" name="2013-MAY-14 08:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="13" /> <perf_data unit="seconds" value="6.330" /> </bucket> - <bucket id="3" name="2013-MAY-14 09:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="7.242" /> </bucket> - <bucket id="4" name="2013-MAY-14 10:00 AM"> <avail_data unit="percent" value="93.33" /> <data_count unit="#" value="14" /> <perf_data unit="seconds" value="7.083" /> </bucket> - <bucket id="5" name="2013-MAY-14 11:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="7.087" /> </bucket> - <bucket id="6" name="2013-MAY-14 12:00 PM"> <avail_data unit="percent" value="76.92" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="6.197" /> </bucket> - <bucket id="7" name="2013-MAY-14 01:00 PM"> <avail_data unit="percent" value="83.33" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="6.772" /> </bucket> - <bucket id="8" name="2013-MAY-14 02:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="5.832" /> </bucket> - <bucket id="9" name="2013-MAY-14 03:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="8.513" /> </bucket> - <bucket id="10" name="2013-MAY-14 04:00 PM"> <avail_data unit="percent" value="91.67" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="7.190" /> </bucket> - <bucket id="11" name="2013-MAY-14 05:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="6.373" /> </bucket> - <bucket id="12" name="2013-MAY-14 06:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="12" /> <perf_data unit="seconds" value="8.440" /> </bucket> - <bucket id="13" name="2013-MAY-14 07:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="6.318" /> </bucket> - <bucket id="14" name="2013-MAY-14 08:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="6.374" /> </bucket> - <bucket id="15" name="2013-MAY-14 09:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="6.773" /> </bucket> - <bucket id="16" name="2013-MAY-14 10:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="18" /> <perf_data unit="seconds" value="6.274" /> </bucket> - <bucket id="17" name="2013-MAY-14 11:00 PM"> <avail_data unit="percent" value="90.00" /> <data_count unit="#" value="9" /> <perf_data unit="seconds" value="5.881" /> </bucket> - <bucket id="18" name="2013-MAY-15 12:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="16" /> <perf_data unit="seconds" value="5.630" /> </bucket> - <bucket id="19" name="2013-MAY-15 01:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="16" /> <perf_data unit="seconds" value="6.585" /> </bucket> - <bucket id="20" name="2013-MAY-15 02:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="7.394" /> </bucket> - <bucket id="21" name="2013-MAY-15 03:00 AM"> <avail_data unit="percent" value="91.67" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="6.427" /> </bucket> - <bucket id="22" name="2013-MAY-15 04:00 AM"> <avail_data unit="percent" value="95.24" /> <data_count unit="#" value="20" /> <perf_data unit="seconds" value="7.140" /> </bucket> - <bucket id="23" name="2013-MAY-15 05:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="7.152" /> </bucket> - <bucket id="24" name="2013-MAY-15 06:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="12" /> <perf_data unit="seconds" value="6.474" /> </bucket> </bucket_data> - <graph_option> <data_cell name="perfwarning" unit="seconds" value="-" /> <data_cell name="perfcritical" unit="seconds" value="-" /> <data_cell name="availwarning" unit="percent" value="-" /> <data_cell name="availcritical" unit="percent" value="-" /> <data_cell name="bucketsize" unit="seconds" value="3600" /> <data_cell name="rows" unit="#" value="24" /> <data_cell name="pagecomponent" unit="seconds" value="Total Time" /> <data_cell name="avg_perf" unit="seconds" value="6.729" /> <data_cell name="avg_avail" unit="percent" value="95.97" /> <data_cell name="total_datapoint_count" unit="#" value="347" /> <data_cell /> </graph_option> </measurement> - <measurement id="521406"> <alias>Site2</alias> - <bucket_data> - <bucket id="1" name="2013-MAY-14 07:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="18" /> <perf_data unit="seconds" value="2.247" /> </bucket> - <bucket id="2" name="2013-MAY-14 08:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="13" /> <perf_data unit="seconds" value="2.382" /> </bucket> - <bucket id="3" name="2013-MAY-14 09:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="2.232" /> </bucket> - <bucket id="4" name="2013-MAY-14 10:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="14" /> <perf_data unit="seconds" value="2.223" /> </bucket> - <bucket id="5" name="2013-MAY-14 11:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="2.265" /> </bucket> - <bucket id="6" name="2013-MAY-14 12:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="2.130" /> </bucket> - <bucket id="7" name="2013-MAY-14 01:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="2.153" /> </bucket> - <bucket id="8" name="2013-MAY-14 02:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="2.005" /> </bucket> - <bucket id="9" name="2013-MAY-14 03:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="2.322" /> </bucket> - <bucket id="10" name="2013-MAY-14 04:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="1.918" /> </bucket> - <bucket id="11" name="2013-MAY-14 05:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="1.992" /> </bucket> - <bucket id="12" name="2013-MAY-14 06:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="12" /> <perf_data unit="seconds" value="2.423" /> </bucket> - <bucket id="13" name="2013-MAY-14 07:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="2.327" /> </bucket> - <bucket id="14" name="2013-MAY-14 08:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="2.605" /> </bucket> - <bucket id="15" name="2013-MAY-14 09:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="2.533" /> </bucket> - <bucket id="16" name="2013-MAY-14 10:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="18" /> <perf_data unit="seconds" value="2.077" /> </bucket> - <bucket id="17" name="2013-MAY-14 11:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="9" /> <perf_data unit="seconds" value="2.356" /> </bucket> - <bucket id="18" name="2013-MAY-15 12:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="16" /> <perf_data unit="seconds" value="2.506" /> </bucket> - <bucket id="19" name="2013-MAY-15 01:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="16" /> <perf_data unit="seconds" value="2.422" /> </bucket> - <bucket id="20" name="2013-MAY-15 02:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="2.220" /> </bucket> - <bucket id="21" name="2013-MAY-15 03:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="2.669" /> </bucket> - <bucket id="22" name="2013-MAY-15 04:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="20" /> <perf_data unit="seconds" value="2.274" /> </bucket> - <bucket id="23" name="2013-MAY-15 05:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="2.277" /> </bucket> - <bucket id="24" name="2013-MAY-15 06:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="12" /> <perf_data unit="seconds" value="2.180" /> </bucket> </bucket_data> - <graph_option> <data_cell name="perfwarning" unit="seconds" value="-" /> <data_cell name="perfcritical" unit="seconds" value="-" /> <data_cell name="availwarning" unit="percent" value="-" /> <data_cell name="availcritical" unit="percent" value="-" /> <data_cell name="bucketsize" unit="seconds" value="3600" /> <data_cell name="rows" unit="#" value="24" /> <data_cell name="pagecomponent" unit="seconds" value="Total Time" /> <data_cell name="avg_perf" unit="seconds" value="2.269" /> <data_cell name="avg_avail" unit="percent" value="100.00" /> <data_cell name="total_datapoint_count" unit="#" value="333" /> <data_cell /> </graph_option> </measurement> - <measurement id="521406"> <alias>Site1</alias> - <bucket_data> - <bucket id="1" name="2013-MAY-14 07:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="18" /> <perf_data unit="seconds" value="1.431" /> </bucket> - <bucket id="2" name="2013-MAY-14 08:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="13" /> <perf_data unit="seconds" value="1.559" /> </bucket> - <bucket id="3" name="2013-MAY-14 09:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="1.378" /> </bucket> - <bucket id="4" name="2013-MAY-14 10:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="14" /> <perf_data unit="seconds" value="1.307" /> </bucket> - <bucket id="5" name="2013-MAY-14 11:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="1.458" /> </bucket> - <bucket id="6" name="2013-MAY-14 12:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="1.345" /> </bucket> - <bucket id="7" name="2013-MAY-14 01:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="1.317" /> </bucket> - <bucket id="8" name="2013-MAY-14 02:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="1.465" /> </bucket> - <bucket id="9" name="2013-MAY-14 03:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="1.398" /> </bucket> - <bucket id="10" name="2013-MAY-14 04:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="1.509" /> </bucket> - <bucket id="11" name="2013-MAY-14 05:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="1.284" /> </bucket> - <bucket id="12" name="2013-MAY-14 06:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="12" /> <perf_data unit="seconds" value="1.759" /> </bucket> - <bucket id="13" name="2013-MAY-14 07:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="1.434" /> </bucket> - <bucket id="14" name="2013-MAY-14 08:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="1.402" /> </bucket> - <bucket id="15" name="2013-MAY-14 09:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="1.452" /> </bucket> - <bucket id="16" name="2013-MAY-14 10:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="18" /> <perf_data unit="seconds" value="1.216" /> </bucket> - <bucket id="17" name="2013-MAY-14 11:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="9" /> <perf_data unit="seconds" value="1.381" /> </bucket> - <bucket id="18" name="2013-MAY-15 12:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="16" /> <perf_data unit="seconds" value="1.236" /> </bucket> - <bucket id="19" name="2013-MAY-15 01:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="16" /> <perf_data unit="seconds" value="1.327" /> </bucket> - <bucket id="20" name="2013-MAY-15 02:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="17" /> <perf_data unit="seconds" value="1.465" /> </bucket> - <bucket id="21" name="2013-MAY-15 03:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="1.529" /> </bucket> - <bucket id="22" name="2013-MAY-15 04:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="20" /> <perf_data unit="seconds" value="1.354" /> </bucket> - <bucket id="23" name="2013-MAY-15 05:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="11" /> <perf_data unit="seconds" value="1.372" /> </bucket> - <bucket id="24" name="2013-MAY-15 06:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="12" /> <perf_data unit="seconds" value="1.219" /> </bucket> </bucket_data> - <graph_option> <data_cell name="perfwarning" unit="seconds" value="-" /> <data_cell name="perfcritical" unit="seconds" value="-" /> <data_cell name="availwarning" unit="percent" value="-" /> <data_cell name="availcritical" unit="percent" value="-" /> <data_cell name="bucketsize" unit="seconds" value="3600" /> <data_cell name="rows" unit="#" value="24" /> <data_cell name="pagecomponent" unit="seconds" value="Total Time" /> <data_cell name="avg_perf" unit="seconds" value="1.387" /> <data_cell name="avg_avail" unit="percent" value="100.00" /> <data_cell name="total_datapoint_count" unit="#" value="333" /> <data_cell /> </graph_option> </measurement> <ns2:link href="www.example.com" rel="slotMetadata" type="application/xml" /> </graph_data>
我的数据框需要如下所示：
alias bucket_name avail_data perf_data
我试过这个：
doc1 = xmlParse("data.xml")
df<-xmlToDataFrame(nodes = getNodeSet(doc1,"//alias"))
我只在一个列数据框中获取别名.还有什么想法,我在这里缺少什么？
有文件
解决方法
看起来你的XML有一些问题.我只能通过删除以下内容来使其工作：
Line 58: <measurement id="521406"> Line 107: <measurement id="521406">
所以：
xml_file <- '<?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <graph_data xmlns:ns2="http://www.w3.org/2005/Atom"> <graph_property name="calculation_method" value="Geo Mean" /> <graph_property name="graph_type" value="TIME" /> <measurement id="521406"> <alias>example1.com</alias> <bucket_data> <bucket id="1" name="2013-MAY-14 07:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="21" /> <perf_data unit="seconds" value="3.102" /> </bucket> <bucket id="2" name="2013-MAY-14 08:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="13" /> <perf_data unit="seconds" value="3.052" /> </bucket> <bucket id="3" name="2013-MAY-14 09:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="3.387" /> </bucket> <bucket id="4" name="2013-MAY-14 10:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="3.338" /> </bucket> <bucket id="5" name="2013-MAY-14 11:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="2.149" /> </bucket> <bucket id="6" name="2013-MAY-14 12:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="13" /> <perf_data unit="seconds" value="3.202" /> </bucket> <bucket id="7" name="2013-MAY-14 01:00 PM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="18" /> <perf_data unit="seconds" value="2.883" /> </bucket> </bucket_data> <graph_option> <data_cell name="perfwarning" unit="seconds" value="-" /> <data_cell name="perfcritical" unit="seconds" value="-" /> <data_cell name="availwarning" unit="percent" value="-" /> <data_cell name="availcritical" unit="percent" value="-" /> <data_cell name="bucketsize" unit="seconds" value="3600" /> <data_cell name="rows" unit="#" value="24" /> <data_cell name="pagecomponent" unit="seconds" value="Total Time" /> <data_cell name="avg_perf" unit="seconds" value="2.949" /> <data_cell name="avg_avail" unit="percent" value="100.00" /> <data_cell name="total_datapoint_count" unit="#" value="347" /> <data_cell /> </graph_option> </measurement> <measurement id="521406"> <alias>example2.com</alias> <bucket_data> <bucket id="1" name="2013-MAY-14 07:00 AM"> <avail_data unit="percent" value="85.71" /> <data_count unit="#" value="18" /> <perf_data unit="seconds" value="6.503" /> </bucket> <bucket id="2" name="2013-MAY-14 08:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="13" /> <perf_data unit="seconds" value="6.330" /> </bucket> <bucket id="3" name="2013-MAY-14 09:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="15" /> <perf_data unit="seconds" value="7.242" /> </bucket> <bucket id="4" name="2013-MAY-14 10:00 AM"> <avail_data unit="percent" value="93.33" /> <data_count unit="#" value="14" /> <perf_data unit="seconds" value="7.083" /> </bucket> <bucket id="5" name="2013-MAY-14 11:00 AM"> <avail_data unit="percent" value="100.00" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="7.087" /> </bucket> <bucket id="6" name="2013-MAY-14 12:00 PM"> <avail_data unit="percent" value="76.92" /> <data_count unit="#" value="10" /> <perf_data unit="seconds" value="6.197" /> </bucket> </bucket_data> <graph_option> <data_cell name="perfwarning" unit="seconds" value="-" /> <data_cell name="perfcritical" unit="seconds" value="-" /> <data_cell name="availwarning" unit="percent" value="-" /> <data_cell name="availcritical" unit="percent" value="-" /> <data_cell name="bucketsize" unit="seconds" value="3600" /> <data_cell name="rows" unit="#" value="24" /> <data_cell name="pagecomponent" unit="seconds" value="Total Time" /> <data_cell name="avg_perf" unit="seconds" value="6.729" /> <data_cell name="avg_avail" unit="percent" value="95.97" /> <data_cell name="total_datapoint_count" unit="#" value="347" /> <data_cell /> </graph_option> </measurement> </graph_data>' xml_file <- xmlParse(xml_file) # Parse the XML xml_file <- xmlToList(xml_file) # Convert the XML to a list
我将它转换为列表而不是数据框,因为XML似乎不遵循容易转换为行和列的结构.之后,根据您的问题,我只提取了“测量”节点的“别名”或“bucket_data”部分中包含的信息：
xml_file <- xml_file[names(xml_file) == "measurement"]
xml_file <- lapply(xml_file,function(x) x[grep("alias|bucket",names(x))])
然后我浏览了每个测量节点,留下别名信息,将桶列表转换为命名向量,然后将别名和桶绑定到列中.最后,我将测量节点绑定到行中,并将整个事物转换为数据帧.
xml_file <- lapply(xml_file,function(x) {
alias <- x$alias
buckets <- t(sapply(x$bucket_data,unlist))
cbind("alias" = alias,buckets)
})
xml_file <- do.call("rbind",xml_file)
xml_file <- data.frame(xml_file,stringsAsFactors = FALSE)
Warning message:
In data.row.names(row.names,rowsi,i) :
some row.names duplicated: 2,3,4,5,6,7,8,9,10,11,12,13 --> row.names NOT used
str(xml_file)
'data.frame': 13 obs. of 9 variables:
$alias : chr "example1.com" "example1.com" "example1.com" "example1.com" ...
$avail_data.unit : chr "percent" "percent" "percent" "percent" ...
$avail_data.value: chr "100.00" "100.00" "100.00" "100.00" ...
$data_count.unit : chr "#" "#" "#" "#" ...
$data_count.value: chr "21" "13" "15" "15" ...
$perf_data.unit : chr "seconds" "seconds" "seconds" "seconds" ...
$perf_data.value : chr "3.102" "3.052" "3.387" "3.338" ...
$.attrs.id : chr "1" "2" "3" "4" ...
$.attrs.name : chr "2013-MAY-14 07:00 AM" "2013-MAY-14 08:00 AM" "2013-MAY-14 09:00 AM" "2013-MAY-14 10:00 AM" ...
您仍然需要清理列名并将列转换为适当的类,但它会将您的数据转换为数据框.
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