xml解析開始標籤預計R

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我不知道很多關於XML，但我需要閱讀此文件，以便R可以使用它。但是，總是出現一個錯誤：「文檔爲空，預計開始標記，'<'找不到'。但我看不到錯誤的起源。下面是XML文件：xml解析開始標籤預計R

<?xml version="1.0" encoding="UTF-8"?> 
<MappingTest xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://sourceforge.net/projects/alevin/ ./Alevin.xsd" xmlns="http://sourceforge.net/projects/alevin/" name="AdvSubgraphTestGenerator2"> 
    <TestGenerator className="tests.generatorTests.AdvSubgraphTestRunner"/> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="7.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="1612.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="1.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="1.6851389854194017"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="1.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="0.9861088559313271"/> 
    <ScenarioMetric name="StochasticMetric2" result="0.7559889069056674"/> 
    <ScenarioMetric name="VertexConnectivity0" result="1.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="0.6648338346749284"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="1.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="2.279045304613785"/> 
    <ScenarioMetric name="StochasticMetric0" result="0.4505067333055669"/> 
    </ScenarioResult> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="8.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="846.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="1.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="1.741814530894711"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="1.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="1.0019396461682453"/> 
    <ScenarioMetric name="StochasticMetric2" result="0.868390100905683"/> 
    <ScenarioMetric name="VertexConnectivity0" result="1.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="1.854673959898261"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="1.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="1.295691487310222"/> 
    <ScenarioMetric name="StochasticMetric0" result="0.6805885859898158"/> 
    </ScenarioResult> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="9.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="609.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="2.212517958069722"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="0.08677137867839191"/> 
    <ScenarioMetric name="StochasticMetric2" result="1.9927278019276755"/> 
    <ScenarioMetric name="VertexConnectivity0" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="1.6370875136672722"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="1.8573960873462065"/> 
    <ScenarioMetric name="StochasticMetric0" result="1.7266332660325572"/> 
    </ScenarioResult> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="10.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="578.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="1.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="2.145412191385898"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="1.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="0.826946783775961"/> 
    <ScenarioMetric name="StochasticMetric2" result="1.8202071941911595"/> 
    <ScenarioMetric name="VertexConnectivity0" result="1.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="1.5890364574294114"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="1.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="2.2117994159315804"/> 
    <ScenarioMetric name="StochasticMetric0" result="1.1993780131111107"/> 
    </ScenarioResult> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="11.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="797.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="2.3954850079335364"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="0.019578501527560466"/> 
    <ScenarioMetric name="StochasticMetric2" result="3.0860109027715414"/> 
    <ScenarioMetric name="VertexConnectivity0" result="3.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="1.854555495387745"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="3.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="3.584217996538307"/> 
    <ScenarioMetric name="StochasticMetric0" result="2.1648172533072234"/> 
    </ScenarioResult> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="12.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="892.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="2.4913004237744385"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="0.7696498939789347"/> 
    <ScenarioMetric name="StochasticMetric2" result="2.201723978314626"/> 
    <ScenarioMetric name="VertexConnectivity0" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="2.04191205905592"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="2.376993537716656"/> 
    <ScenarioMetric name="StochasticMetric0" result="3.034262661127799"/> 
    </ScenarioResult> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="13.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="872.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="2.047126232292386"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="0.9952229587725951"/> 
    <ScenarioMetric name="StochasticMetric2" result="3.3794406500249257"/> 
    <ScenarioMetric name="VertexConnectivity0" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="1.6523543005400327"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="3.048441149178422"/> 
    <ScenarioMetric name="StochasticMetric0" result="3.133358034963522"/> 
    </ScenarioResult> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="14.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="891.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="1.987660356945407"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="0.2484076205543828"/> 
    <ScenarioMetric name="StochasticMetric2" result="3.9080988222890496"/> 
    <ScenarioMetric name="VertexConnectivity0" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="2.1670218484160566"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="3.2472187629267433"/> 
    <ScenarioMetric name="StochasticMetric0" result="3.1328785000072386"/> 
    </ScenarioResult> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="15.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="1162.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="2.2234619923069414"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="0.45771183680269933"/> 
    <ScenarioMetric name="StochasticMetric2" result="2.9215253413041196"/> 
    <ScenarioMetric name="VertexConnectivity0" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="2.054840069986192"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="3.442550183039827"/> 
    <ScenarioMetric name="StochasticMetric0" result="3.995284651861695"/> 
    </ScenarioResult> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="16.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="1113.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="1.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="2.0926238844236447"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="1.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="0.7808319615152142"/> 
    <ScenarioMetric name="StochasticMetric2" result="3.0087947748201787"/> 
    <ScenarioMetric name="VertexConnectivity0" result="1.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="2.1883371528470357"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="1.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="3.710605434"/> 
    <ScenarioMetric name="StochasticMetric0" result="2.7728208750298773"/> 
    </ScenarioResult> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="17.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="2454.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="2.23606797749979"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="0.0"/> 
    <ScenarioMetric name="StochasticMetric2" result="4.143188604518091"/> 
    <ScenarioMetric name="VertexConnectivity0" result="4.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="3.2916550003635034"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="4.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="2.7605883080698828"/> 
    <ScenarioMetric name="StochasticMetric0" result="5.220399731228472"/> 
    </ScenarioResult> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/> 
    <ScenarioParameter name="Waxman_beta" value="0.5"/> 
    <ScenarioParameter name="NumVNodesPerNet" value="18.0"/> 
    <ScenarioParameter name="NumVNets" value="1.0"/> 
    <ScenarioParameter name="SNetSize" value="100.0"/> 
    <ScenarioParameter name="Min_BW_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_BW_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_BW_Res" value="30.0"/> 
    <ScenarioParameter name="Max_BW_Res" value="100.0"/> 
    <ScenarioParameter name="Min_CPU_Dem" value="10.0"/> 
    <ScenarioParameter name="Max_CPU_Dem" value="50.0"/> 
    <ScenarioParameter name="Min_CPU_Res" value="30.0"/> 
    <ScenarioParameter name="Max_CPU_Res" value="100.0"/> 
    <ScenarioParameter name="NumberOfRun" value="1.0"/> 
    <ScenarioMetric name="Runtime" result="2516.0"/> 
    <ScenarioMetric name="RejectedNetworksNumber" result="0.0"/> 
    <ScenarioMetric name="VertexConnectivity2" result="2.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity2" result="1.9840593925343335"/> 
    <ScenarioMetric name="EdgeConnectivity2" result="2.0"/> 
    <ScenarioMetric name="FabianianCoefficient2" result="1.0"/> 
    <ScenarioMetric name="SpectralGap2" result="0.3636812390986559"/> 
    <ScenarioMetric name="StochasticMetric2" result="4.238514242266579"/> 
    <ScenarioMetric name="VertexConnectivity0" result="3.0"/> 
    <ScenarioMetric name="AlgebraicConnectivity0" result="2.2503830421805113"/> 
    <ScenarioMetric name="EdgeConnectivity0" result="3.0"/> 
    <ScenarioMetric name="FabianianCoefficient0" result="1.0"/> 
    <ScenarioMetric name="SpectralGap0" result="4.0227880048448625"/> 
    <ScenarioMetric name="StochasticMetric0" result="6.649563197244915"/> 
    </ScenarioResult> 
</MappingTest>

來源

2014-10-30 Fab Ian

我複製你的代碼到RStudio，在單引號，並將其分配給對象，「DOC」

doc <- '<?xml version="1.0" encoding="UTF-8"?> 
    <MappingTest xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://sourceforge.net/projects/alevin/ ./Alevin.xsd" xmlns="http://sourceforge.net/projects/alevin/" name="AdvSubgraphTestGenerator2"> 
    <TestGenerator className="tests.generatorTests.AdvSubgraphTestRunner"/> 
    <ScenarioResult> 
    <ScenarioParameter name="Waxman_alpha" value="0.4"/>

其餘此處省略

然後下面看起來很好：

test <- htmlTreeParse(doc, useInternal = TRUE)

你想檢索一些el （doc）使用類似

xpathSApply(doc, "xpath expression", xmlValue, trim = TRUE)

來源

2014-10-31 01:41:47 lawyeR

謝謝，它的工作原理。實際上，我想檢索doc的一些元素，但是什麼是xpath擴展。你能給我一個例子，像返回VertexConnectivity的所有結果嗎？爲什麼你不使用xmlParse（）？ – 2014-10-31 11:26:10

將您正在搜索的網站的URL添加到您的問題或評論中，我將向您發送XPath表達式。我需要使用Firebug來查看該URL的實際HTML代碼。至於xmlParse，我其實不知道它是否有所作爲。我一直在使用htmlTreeParse並且從未探索過替代品。 – lawyeR 2014-10-31 13:22:43

這將是非常友善的你。但事實上，沒有URL是因爲我的java程序生成了xml文件。因此，我只需要知道如何將每個度量標準的結果轉化爲向量或其他事物，以便我可以將結果繪製爲函數。 – 2014-10-31 19:25:12

xml解析開始標籤預計R

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