如何將xml文件轉換為R中的數據框
[英]how to convert xml file to a data frame in R
問題描述
我有這個xml文件，我想將其轉換為數據框：
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>
我的數據框需要如下所示：
alias bucket_name avail_data perf_data
我試過這個：
doc1 = xmlParse("data.xml")
df<-xmlToDataFrame(nodes = getNodeSet(doc1, "//alias"))
我只在一個列數據框中獲取別名。 還有什么想法，我在這里缺少什么？
有文件
1 個解決方案
解決方案1
2 已采納 2013-05-16 14:24:26
看起來你的XML有一些問題。 我只能通過刪除以下內容來使其工作：
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
我將它轉換為列表而不是數據框，因為XML似乎不遵循容易轉換為行和列的結構。 之后，根據您的問題，我只提取了“測量”節點的“別名”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))])
然后我瀏覽了每個測量節點，留下別名信息，將桶列表轉換為命名向量，然后將別名和桶綁定到列中。 最后，我將測量節點綁定到行中，並將整個事物轉換為數據幀。
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並將列轉換為適當的類，但它會將您的數據轉換為數據框。
如何將xml文件轉換為R中的數據框？
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