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Импорт данных XML в R

2013-06-17 2 views
1

Мне кажется, что я схожу с ума.Импорт данных XML в R

Я пытаюсь импортировать XML-данные в R, которые я загрузил из usaspending.gov, используя xpathApply. Прямо сейчас, я просто пытаюсь изолировать аттрибут DateSigned. Я чувствую, что мой синтаксис xpath правильный, но я рисую пустой список. Есть предположения?

require(XML) 

file1 <- "FY12.xml" 

download.file("http://usaspending.gov/fpds/fpds.php?detail=b&fiscal_year=2012&maj_agency_cat=97&max_records=10", file1, method="auto") 

doc <- xmlTreeParse(file1, useInternalNode = TRUE) 
top <- xmlRoot(doc) 
test <- xpathApply(top, "/usaspendingSearchResults/result/doc/DateSigned", xmlValue)

отредактирован ДОБАВЬТЕ XML код:

<?xml version="1.0" encoding="utf-8"?> 
<usaspendingSearchResults xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://usaspending.gov/schemas/" xsi:noNamespaceSchemaLocation="http://usaspending.gov/schemas/PrimeBasicContracts.xsd"> 
    <search_criteria> 
    <search_criterion field="fiscal_year" value="2012"/> 
    <search_criterion field="maj_contracting_agency" value="97*"/> 
    <search_criterion field="Contracts" value="c"/> 
    <search_criterion field="sortby" value="DOLLARS_OBLIGATED desc"/> 
    <search_criterion field="records_from" value="0"/> 
    <search_criterion field="max_records" value="10"/> 
    </search_criteria> 
    <result numFound="1463044" max_records="10"> 
    <doc spendingCategory="Contracts"> 
     <record_count/> 
     <AwardType>Definitive Contract</AwardType> 
     <ContractPricing>Firm Fixed Price</ContractPricing> 
     <ContractingAgency>DEPT OF THE AIR FORCE</ContractingAgency> 
     <DUNSNumber>149879157</DUNSNumber> 
     <parentDUNSNumber>009256819</parentDUNSNumber> 
     <DateSigned>2012-03-08T05:00:00Z</DateSigned> 
     <ContractDescription>RSAF F-15 FLEET MODERNIZATION PROGRAM</ContractDescription> 
     <ReasonForModification/> 
     <DollarsObligated>3373879999.98</DollarsObligated> 
     <ExtentCompeted>NOT AVAILABLE FOR COMPETITION</ExtentCompeted> 
     <FiscalYear>2012</FiscalYear> 
     <TransactionNumber>14</TransactionNumber> 
     <FundingAgency>5700</FundingAgency> 
     <IDVProcurementInstrumentID/> 
     <MajorAgency>9700</MajorAgency> 
     <ContractingAgencyCode>5700</ContractingAgencyCode> 
     <MajorFundingAgency>9700</MajorFundingAgency> 
     <ModificationNumber>0</ModificationNumber> 
     <PSCCategoryCode>1510</PSCCategoryCode> 
     <ParentRecipientOrCompanyName>THE BOEING COMPANY</ParentRecipientOrCompanyName> 
     <PlaceofPerformanceCongDistrict>MO01</PlaceofPerformanceCongDistrict> 
     <PlaceofPerformanceState>MISSOURI</PlaceofPerformanceState> 
     <PlaceofPerformanceZipCode>631341939</PlaceofPerformanceZipCode> 
     <PrincipalNAICSCode>336411</PrincipalNAICSCode> 
     <ProcurementInstrumentID>FA863412C2651</ProcurementInstrumentID> 
     <PrincipalPlaceCountyOrCity/> 
     <ProductorServiceCode>1510</ProductorServiceCode> 
     <ProgramSource/> 
     <ProgramSourceAccountCode>8242</ProgramSourceAccountCode> 
     <ProgramSourceAgencyCode>97</ProgramSourceAgencyCode> 
     <ProgramSourceDescription/> 
     <RecipientAddressLine123>6200 JS MCDONNELL BLVD, , </RecipientAddressLine123> 
     <RecipientCity>SAINT LOUIS</RecipientCity> 
     <RecipientCongressionalDistrict>MO01</RecipientCongressionalDistrict> 
     <RecipientCountyName>SAINT LOUIS</RecipientCountyName> 
     <RecipientName>BOEING COMPANY, THE</RecipientName> 
     <RecipientOrContractorName>BOEING COMPANY, THE</RecipientOrContractorName> 
     <RecipientState>MO</RecipientState> 
     <RecipientZipCode>631341939</RecipientZipCode> 
     <TypeofSpending>c</TypeofSpending> 
     <TypeofTransaction>Definitive Contract</TypeofTransaction> 
    </doc> 
    <doc spendingCategory="Contracts"> 
     <record_count/> 
     <AwardType>Definitive Contract</AwardType> 
     <ContractPricing>Combination (two or more)</ContractPricing> 
     <ContractingAgency>DEPT OF THE NAVY</ContractingAgency> 
     <DUNSNumber>963737366</DUNSNumber> 
     <parentDUNSNumber>001381284</parentDUNSNumber> 
     <DateSigned>2012-01-31T05:00:00Z</DateSigned> 
     <ContractDescription>CONSTRUCTION OF SSN 784 (FY 09)</ContractDescription> 
     <ReasonForModification>FUNDING ONLY ACTION</ReasonForModification> 
     <DollarsObligated>2712135779.00</DollarsObligated> 
     <ExtentCompeted>NOT COMPETED</ExtentCompeted> 
     <FiscalYear>2012</FiscalYear> 
     <TransactionNumber>0</TransactionNumber> 
     <FundingAgency>1700</FundingAgency> 
     <IDVProcurementInstrumentID/> 
     <MajorAgency>9700</MajorAgency> 
     <ContractingAgencyCode>1700</ContractingAgencyCode> 
     <MajorFundingAgency>9700</MajorFundingAgency> 
     <ModificationNumber>P00022</ModificationNumber> 
     <PSCCategoryCode>1904</PSCCategoryCode> 
     <ParentRecipientOrCompanyName>GENERAL DYNAMICS CORPORATION</ParentRecipientOrCompanyName> 
     <PlaceofPerformanceCongDistrict>CT02</PlaceofPerformanceCongDistrict> 
     <PlaceofPerformanceState>CONNECTICUT</PlaceofPerformanceState> 
     <PlaceofPerformanceZipCode>063404909</PlaceofPerformanceZipCode> 
     <PrincipalNAICSCode>336611</PrincipalNAICSCode> 
     <ProcurementInstrumentID>N0002409C2104</ProcurementInstrumentID> 
     <PrincipalPlaceCountyOrCity/> 
     <ProductorServiceCode>1904</ProductorServiceCode> 
     <ProgramSource/> 
     <ProgramSourceAccountCode>1611</ProgramSourceAccountCode> 
     <ProgramSourceAgencyCode>17</ProgramSourceAgencyCode> 
     <ProgramSourceDescription/> 
     <RecipientAddressLine123>75 EASTERN POINT RD, , </RecipientAddressLine123> 
     <RecipientCity>GROTON</RecipientCity> 
     <RecipientCongressionalDistrict>CT02</RecipientCongressionalDistrict> 
     <RecipientCountyName>NEW LONDON</RecipientCountyName> 
     <RecipientName>ELECTRIC BOAT CORPORATION</RecipientName> 
     <RecipientOrContractorName>ELECTRIC BOAT CORPORATION</RecipientOrContractorName> 
     <RecipientState>CT</RecipientState> 
     <RecipientZipCode>063404905</RecipientZipCode> 
     <TypeofSpending>c</TypeofSpending> 
     <TypeofTransaction>Definitive Contract</TypeofTransaction> 
    </doc> 
    <doc spendingCategory="Contracts"> 
     <record_count/> 
     <AwardType>Definitive Contract</AwardType> 
     <ContractPricing>Cost Plus Fixed Fee</ContractPricing> 
     <ContractingAgency>DEPT OF THE NAVY</ContractingAgency> 
     <DUNSNumber>830135799</DUNSNumber> 
     <parentDUNSNumber>967362331</parentDUNSNumber> 
     <DateSigned>2012-05-31T04:00:00Z</DateSigned> 
     <ContractDescription>AWARD OF LHA 7 DETAIL DESIGN AND CONSTRUCTION.</ContractDescription> 
     <ReasonForModification>ADDITIONAL WORK (NEW AGREEMENT,FAR PART 6 APPLIES)</ReasonForModification> 
     <DollarsObligated>2156714483.00</DollarsObligated> 
     <ExtentCompeted>NOT COMPETED</ExtentCompeted> 
     <FiscalYear>2012</FiscalYear> 
     <TransactionNumber>0</TransactionNumber> 
     <FundingAgency>1700</FundingAgency> 
     <IDVProcurementInstrumentID/> 
     <MajorAgency>9700</MajorAgency> 
     <ContractingAgencyCode>1700</ContractingAgencyCode> 
     <MajorFundingAgency>9700</MajorFundingAgency> 
     <ModificationNumber>P00016</ModificationNumber> 
     <PSCCategoryCode>1911</PSCCategoryCode> 
     <ParentRecipientOrCompanyName>Huntington Ingalls Industries Inc.</ParentRecipientOrCompanyName> 
     <PlaceofPerformanceCongDistrict>MS04</PlaceofPerformanceCongDistrict> 
     <PlaceofPerformanceState>MISSISSIPPI</PlaceofPerformanceState> 
     <PlaceofPerformanceZipCode>395680149</PlaceofPerformanceZipCode> 
     <PrincipalNAICSCode>336611</PrincipalNAICSCode> 
     <ProcurementInstrumentID>N0002410C2229</ProcurementInstrumentID> 
     <PrincipalPlaceCountyOrCity/> 
     <ProductorServiceCode>1911</ProductorServiceCode> 
     <ProgramSource/> 
     <ProgramSourceAccountCode>1611</ProgramSourceAccountCode> 
     <ProgramSourceAgencyCode>17</ProgramSourceAgencyCode> 
     <ProgramSourceDescription/> 
     <RecipientAddressLine123>1000 ACCESS RD, , </RecipientAddressLine123> 
     <RecipientCity>PASCAGOULA</RecipientCity> 
     <RecipientCongressionalDistrict>MS00</RecipientCongressionalDistrict> 
     <RecipientCountyName>JACKSON</RecipientCountyName> 
     <RecipientName>NORTHROP GRUMMAN SHIPBUILDING, INC.</RecipientName> 
     <RecipientOrContractorName>NORTHROP GRUMMAN SHIPBUILDING, INC.</RecipientOrContractorName> 
     <RecipientState>MS</RecipientState> 
     <RecipientZipCode>395670149</RecipientZipCode> 
     <TypeofSpending>c</TypeofSpending> 
     <TypeofTransaction>Definitive Contract</TypeofTransaction> 
    </doc> 
    <doc spendingCategory="Contracts"> 
     <record_count/> 
     <AwardType>Definitive Contract</AwardType> 
     <ContractPricing>Firm Fixed Price</ContractPricing> 
     <ContractingAgency>DEPT OF THE AIR FORCE</ContractingAgency> 
     <DUNSNumber>832963495</DUNSNumber> 
     <parentDUNSNumber>009256819</parentDUNSNumber> 
     <DateSigned>2012-06-22T04:00:00Z</DateSigned> 
     <ContractDescription>F-15 S/SA CONVERSION&amp;PROVISIOING</ContractDescription> 
     <ReasonForModification/> 
     <DollarsObligated>1828165500.00</DollarsObligated> 
     <ExtentCompeted>NOT AVAILABLE FOR COMPETITION</ExtentCompeted> 
     <FiscalYear>2012</FiscalYear> 
     <TransactionNumber>6</TransactionNumber> 
     <FundingAgency>5700</FundingAgency> 
     <IDVProcurementInstrumentID/> 
     <MajorAgency>9700</MajorAgency> 
     <ContractingAgencyCode>5700</ContractingAgencyCode> 
     <MajorFundingAgency>9700</MajorFundingAgency> 
     <ModificationNumber>0</ModificationNumber> 
     <PSCCategoryCode>J016</PSCCategoryCode> 
     <ParentRecipientOrCompanyName>THE BOEING COMPANY</ParentRecipientOrCompanyName> 
     <PlaceofPerformanceCongDistrict>MO01</PlaceofPerformanceCongDistrict> 
     <PlaceofPerformanceState>MISSOURI</PlaceofPerformanceState> 
     <PlaceofPerformanceZipCode>631341939</PlaceofPerformanceZipCode> 
     <PrincipalNAICSCode>336413</PrincipalNAICSCode> 
     <ProcurementInstrumentID>FA850512C0001</ProcurementInstrumentID> 
     <PrincipalPlaceCountyOrCity/> 
     <ProductorServiceCode>J016</ProductorServiceCode> 
     <ProgramSource/> 
     <ProgramSourceAccountCode>8242</ProgramSourceAccountCode> 
     <ProgramSourceAgencyCode>97</ProgramSourceAgencyCode> 
     <ProgramSourceDescription/> 
     <RecipientAddressLine123>6200 J S MCDONNELL BLVD, , </RecipientAddressLine123> 
     <RecipientCity>SAINT LOUIS</RecipientCity> 
     <RecipientCongressionalDistrict>MO01</RecipientCongressionalDistrict> 
     <RecipientCountyName>SAINT LOUIS</RecipientCountyName> 
     <RecipientName>BOEING COMPANY, THE</RecipientName> 
     <RecipientOrContractorName>BOEING COMPANY, THE</RecipientOrContractorName> 
     <RecipientState>MO</RecipientState> 
     <RecipientZipCode>631341939</RecipientZipCode> 
     <TypeofSpending>c</TypeofSpending> 
     <TypeofTransaction>Definitive Contract</TypeofTransaction> 
    </doc> 
    <doc spendingCategory="Contracts"> 
     <record_count/> 
     <AwardType>Definitive Contract</AwardType> 
     <ContractPricing>Fixed Price Incentive</ContractPricing> 
     <ContractingAgency>DEPT OF THE NAVY</ContractingAgency> 
     <DUNSNumber>106632750</DUNSNumber> 
     <parentDUNSNumber>106632750</parentDUNSNumber> 
     <DateSigned>2011-11-23T05:00:00Z</DateSigned> 
     <ContractDescription>LOT 16 MV FULL FUNDING</ContractDescription> 
     <ReasonForModification>FUNDING ONLY ACTION</ReasonForModification> 
     <DollarsObligated>1681280764.36</DollarsObligated> 
     <ExtentCompeted>NOT COMPETED</ExtentCompeted> 
     <FiscalYear>2012</FiscalYear> 
     <TransactionNumber>0</TransactionNumber> 
     <FundingAgency>1700</FundingAgency> 
     <IDVProcurementInstrumentID/> 
     <MajorAgency>9700</MajorAgency> 
     <ContractingAgencyCode>1700</ContractingAgencyCode> 
     <MajorFundingAgency>9700</MajorFundingAgency> 
     <ModificationNumber>P00173</ModificationNumber> 
     <PSCCategoryCode>1520</PSCCategoryCode> 
     <ParentRecipientOrCompanyName>BELL BOEING JOINT PROJECT OFFICE</ParentRecipientOrCompanyName> 
     <PlaceofPerformanceCongDistrict>TX13</PlaceofPerformanceCongDistrict> 
     <PlaceofPerformanceState>TEXAS</PlaceofPerformanceState> 
     <PlaceofPerformanceZipCode>791111200</PlaceofPerformanceZipCode> 
     <PrincipalNAICSCode>336411</PrincipalNAICSCode> 
     <ProcurementInstrumentID>N0001907C0001</ProcurementInstrumentID> 
     <PrincipalPlaceCountyOrCity/> 
     <ProductorServiceCode>1520</ProductorServiceCode> 
     <ProgramSource/> 
     <ProgramSourceAccountCode>1506</ProgramSourceAccountCode> 
     <ProgramSourceAgencyCode>17</ProgramSourceAgencyCode> 
     <ProgramSourceDescription/> 
     <RecipientAddressLine123>401 TILTROTOR DR, , </RecipientAddressLine123> 
     <RecipientCity>AMARILLO</RecipientCity> 
     <RecipientCongressionalDistrict>TX13</RecipientCongressionalDistrict> 
     <RecipientCountyName>POTTER</RecipientCountyName> 
     <RecipientName>BELL BOEING JOINT PROJECT OFFICE</RecipientName> 
     <RecipientOrContractorName>BELL BOEING JOINT PROJECT OFFICE</RecipientOrContractorName> 
     <RecipientState>TX</RecipientState> 
     <RecipientZipCode>791111200</RecipientZipCode> 
     <TypeofSpending>c</TypeofSpending> 
     <TypeofTransaction>Definitive Contract</TypeofTransaction> 
    </doc> 
    <doc spendingCategory="Contracts"> 
     <record_count/> 
     <AwardType>Definitive Contract</AwardType> 
     <ContractPricing>Firm Fixed Price</ContractPricing> 
     <ContractingAgency>DEPT OF THE NAVY</ContractingAgency> 
     <DUNSNumber>039267141</DUNSNumber> 
     <parentDUNSNumber>009256819</parentDUNSNumber> 
     <DateSigned>2012-09-21T04:00:00Z</DateSigned> 
     <ContractDescription>DEFINITIZE P-8A LRIP III AIRCRAFT</ContractDescription> 
     <ReasonForModification>OTHER ADMINISTRATIVE ACTION</ReasonForModification> 
     <DollarsObligated>1600492644.00</DollarsObligated> 
     <ExtentCompeted>NOT COMPETED</ExtentCompeted> 
     <FiscalYear>2012</FiscalYear> 
     <TransactionNumber>0</TransactionNumber> 
     <FundingAgency>1700</FundingAgency> 
     <IDVProcurementInstrumentID/> 
     <MajorAgency>9700</MajorAgency> 
     <ContractingAgencyCode>1700</ContractingAgencyCode> 
     <MajorFundingAgency>9700</MajorFundingAgency> 
     <ModificationNumber>P00045</ModificationNumber> 
     <PSCCategoryCode>1560</PSCCategoryCode> 
     <ParentRecipientOrCompanyName>THE BOEING COMPANY</ParentRecipientOrCompanyName> 
     <PlaceofPerformanceCongDistrict>WA09</PlaceofPerformanceCongDistrict> 
     <PlaceofPerformanceState>WASHINGTON</PlaceofPerformanceState> 
     <PlaceofPerformanceZipCode>980322316</PlaceofPerformanceZipCode> 
     <PrincipalNAICSCode>336411</PrincipalNAICSCode> 
     <ProcurementInstrumentID>N0001909C0022</ProcurementInstrumentID> 
     <PrincipalPlaceCountyOrCity/> 
     <ProductorServiceCode>1560</ProductorServiceCode> 
     <ProgramSource/> 
     <ProgramSourceAccountCode>1506</ProgramSourceAccountCode> 
     <ProgramSourceAgencyCode>17</ProgramSourceAgencyCode> 
     <ProgramSourceDescription/> 
     <RecipientAddressLine123>20403 68TH AVE S MS 8K-10, , </RecipientAddressLine123> 
     <RecipientCity>KENT</RecipientCity> 
     <RecipientCongressionalDistrict>WA09</RecipientCongressionalDistrict> 
     <RecipientCountyName>KING</RecipientCountyName> 
     <RecipientName>THE BOEING COMPANY</RecipientName> 
     <RecipientOrContractorName>THE BOEING COMPANY</RecipientOrContractorName> 
     <RecipientState>WA</RecipientState> 
     <RecipientZipCode>980322316</RecipientZipCode> 
     <TypeofSpending>c</TypeofSpending> 
     <TypeofTransaction>Definitive Contract</TypeofTransaction> 
    </doc> 
    <doc spendingCategory="Contracts"> 
     <record_count/> 
     <AwardType>Definitive Contract</AwardType> 
     <ContractPricing>Fixed Price Incentive</ContractPricing> 
     <ContractingAgency>DEPT OF THE NAVY</ContractingAgency> 
     <DUNSNumber>008016958</DUNSNumber> 
     <parentDUNSNumber>834951691</parentDUNSNumber> 
     <DateSigned>2011-12-09T05:00:00Z</DateSigned> 
     <ContractDescription>AUTHORIZE EFFORTS ASSOCIATED WITH LRIP 5 PRODUCTION UNDEFINITIEZED CONTRACT ACTION (UCA)</ContractDescription> 
     <ReasonForModification>ADDITIONAL WORK (NEW AGREEMENT,FAR PART 6 APPLIES)</ReasonForModification> 
     <DollarsObligated>1592408644.00</DollarsObligated> 
     <ExtentCompeted>NOT COMPETED</ExtentCompeted> 
     <FiscalYear>2012</FiscalYear> 
     <TransactionNumber>0</TransactionNumber> 
     <FundingAgency>1700</FundingAgency> 
     <IDVProcurementInstrumentID/> 
     <MajorAgency>9700</MajorAgency> 
     <ContractingAgencyCode>1700</ContractingAgencyCode> 
     <MajorFundingAgency>9700</MajorFundingAgency> 
     <ModificationNumber>P00014</ModificationNumber> 
     <PSCCategoryCode>1510</PSCCategoryCode> 
     <ParentRecipientOrCompanyName>LOCKHEED MARTIN CORPORATION</ParentRecipientOrCompanyName> 
     <PlaceofPerformanceCongDistrict>TX12</PlaceofPerformanceCongDistrict> 
     <PlaceofPerformanceState>TEXAS</PlaceofPerformanceState> 
     <PlaceofPerformanceZipCode>761017450</PlaceofPerformanceZipCode> 
     <PrincipalNAICSCode>336411</PrincipalNAICSCode> 
     <ProcurementInstrumentID>N0001910C0002</ProcurementInstrumentID> 
     <PrincipalPlaceCountyOrCity/> 
     <ProductorServiceCode>1510</ProductorServiceCode> 
     <ProgramSource/> 
     <ProgramSourceAccountCode>3010</ProgramSourceAccountCode> 
     <ProgramSourceAgencyCode>57</ProgramSourceAgencyCode> 
     <ProgramSourceDescription/> 
     <RecipientAddressLine123>LOCKHEED BLVD, , </RecipientAddressLine123> 
     <RecipientCity>FORT WORTH</RecipientCity> 
     <RecipientCongressionalDistrict>TX00</RecipientCongressionalDistrict> 
     <RecipientCountyName>TARRANT</RecipientCountyName> 
     <RecipientName>LOCKHEED MARTIN CORPORATION</RecipientName> 
     <RecipientOrContractorName>LOCKHEED MARTIN CORPORATION</RecipientOrContractorName> 
     <RecipientState>TX</RecipientState> 
     <RecipientZipCode>761087450</RecipientZipCode> 
     <TypeofSpending>c</TypeofSpending> 
     <TypeofTransaction>Definitive Contract</TypeofTransaction> 
    </doc> 
    <doc spendingCategory="Contracts"> 
     <record_count/> 
     <AwardType>Definitive Contract</AwardType> 
     <ContractPricing>Firm Fixed Price</ContractPricing> 
     <ContractingAgency>DEPT OF THE ARMY</ContractingAgency> 
     <DUNSNumber>835551474</DUNSNumber> 
     <parentDUNSNumber>001344142</parentDUNSNumber> 
     <DateSigned>2012-06-06T04:00:00Z</DateSigned> 
     <ContractDescription>MULTI SERVICE, 5 YR, MULTI-YR CONTRACT FOR H-60 HELICOPTERS. FY2012 ¿ FY2016 PRODUCTION CONTRACT FOR ARMY/NAVY/FMS UH/HH/MH-60 HELICOPTERS TO INCLUDE PROCUREMENT OF UP TO 916 EACH AIRCRAFT AND RELATED SUPPORT, SERVICES, SYSTEMS/PROJECT MANAGEMENT, PUBLICATIONS, AND TECHNICAL DATA. FMS COUNTRIES INCLUDE SAUDI ARABIAN NATIONAL GUARD (SANG), TAIWAN, THAILAND AND ROYAL AUSTRALIAN NAVY (RAN).</ContractDescription> 
     <ReasonForModification/> 
     <DollarsObligated>1543229958.00</DollarsObligated> 
     <ExtentCompeted>NOT COMPETED</ExtentCompeted> 
     <FiscalYear>2012</FiscalYear> 
     <TransactionNumber>1</TransactionNumber> 
     <FundingAgency>2100</FundingAgency> 
     <IDVProcurementInstrumentID/> 
     <MajorAgency>9700</MajorAgency> 
     <ContractingAgencyCode>2100</ContractingAgencyCode> 
     <MajorFundingAgency>9700</MajorFundingAgency> 
     <ModificationNumber>0</ModificationNumber> 
     <PSCCategoryCode>1520</PSCCategoryCode> 
     <ParentRecipientOrCompanyName>UNITED TECHNOLOGIES CORPORATION</ParentRecipientOrCompanyName> 
     <PlaceofPerformanceCongDistrict>CT03</PlaceofPerformanceCongDistrict> 
     <PlaceofPerformanceState>CONNECTICUT</PlaceofPerformanceState> 
     <PlaceofPerformanceZipCode>066141385</PlaceofPerformanceZipCode> 
     <PrincipalNAICSCode>336411</PrincipalNAICSCode> 
     <ProcurementInstrumentID>W58RGZ12C0008</ProcurementInstrumentID> 
     <PrincipalPlaceCountyOrCity/> 
     <ProductorServiceCode>1520</ProductorServiceCode> 
     <ProgramSource/> 
     <ProgramSourceAccountCode>2031</ProgramSourceAccountCode> 
     <ProgramSourceAgencyCode>21</ProgramSourceAgencyCode> 
     <ProgramSourceDescription/> 
     <RecipientAddressLine123>6900 MAIN ST, , </RecipientAddressLine123> 
     <RecipientCity>STRATFORD</RecipientCity> 
     <RecipientCongressionalDistrict>CT03</RecipientCongressionalDistrict> 
     <RecipientCountyName>FAIRFIELD</RecipientCountyName> 
     <RecipientName>SIKORSKY AIRCRAFT CORPORATION</RecipientName> 
     <RecipientOrContractorName>SIKORSKY AIRCRAFT CORPORATION</RecipientOrContractorName> 
     <RecipientState>CT</RecipientState> 
     <RecipientZipCode>066141385</RecipientZipCode> 
     <TypeofSpending>c</TypeofSpending> 
     <TypeofTransaction>Definitive Contract</TypeofTransaction> 
    </doc> 
    <doc spendingCategory="Contracts"> 
     <record_count/> 
     <AwardType>Delivery Order</AwardType> 
     <ContractPricing>Fixed Price with Economic Price Adjustment</ContractPricing> 
     <ContractingAgency>DEFENSE LOGISTICS AGENCY</ContractingAgency> 
     <DUNSNumber>004294737</DUNSNumber> 
     <parentDUNSNumber>423792808</parentDUNSNumber> 
     <DateSigned>2012-09-20T04:00:00Z</DateSigned> 
     <ContractDescription>AWARD JP5 
CLIN 0101 FOR 82,349,000 FOB ORIGIN DEER PARK, TX BY TANKER 
CLIN 0201 FOR 212,860,000 FOB ORIGIN DEER PARK, TX BY PIPELINE 

AWARD JP8 
CLIN 0301 FOR 118,701,000 FOB ORIGIN DEER PARK, TX BY PIPELINE</ContractDescription> 
     <ReasonForModification/> 
     <DollarsObligated>1358320745.62</DollarsObligated> 
     <ExtentCompeted>FULL AND OPEN COMPETITION</ExtentCompeted> 
     <FiscalYear>2012</FiscalYear> 
     <TransactionNumber>0</TransactionNumber> 
     <FundingAgency>97AS</FundingAgency> 
     <IDVProcurementInstrumentID>SP060012D0510</IDVProcurementInstrumentID> 
     <MajorAgency>9700</MajorAgency> 
     <ContractingAgencyCode>97AS</ContractingAgencyCode> 
     <MajorFundingAgency>9700</MajorFundingAgency> 
     <ModificationNumber>0</ModificationNumber> 
     <PSCCategoryCode>9130</PSCCategoryCode> 
     <ParentRecipientOrCompanyName>ROYAL DUTCH SHELL PLC</ParentRecipientOrCompanyName> 
     <PlaceofPerformanceCongDistrict>TX18</PlaceofPerformanceCongDistrict> 
     <PlaceofPerformanceState>TEXAS</PlaceofPerformanceState> 
     <PlaceofPerformanceZipCode>770024916</PlaceofPerformanceZipCode> 
     <PrincipalNAICSCode>324110</PrincipalNAICSCode> 
     <ProcurementInstrumentID>B001</ProcurementInstrumentID> 
     <PrincipalPlaceCountyOrCity/> 
     <ProductorServiceCode>9130</ProductorServiceCode> 
     <ProgramSource/> 
     <ProgramSourceAccountCode>4930</ProgramSourceAccountCode> 
     <ProgramSourceAgencyCode>97</ProgramSourceAgencyCode> 
     <ProgramSourceDescription/> 
     <RecipientAddressLine123>910 LOUISIANA ST STE 2, , </RecipientAddressLine123> 
     <RecipientCity>HOUSTON</RecipientCity> 
     <RecipientCongressionalDistrict>TX18</RecipientCongressionalDistrict> 
     <RecipientCountyName>HARRIS</RecipientCountyName> 
     <RecipientName>EQUILON ENTERPRISES LLC</RecipientName> 
     <RecipientOrContractorName>EQUILON ENTERPRISES LLC</RecipientOrContractorName> 
     <RecipientState>TX</RecipientState> 
     <RecipientZipCode>770024916</RecipientZipCode> 
     <TypeofSpending>c</TypeofSpending> 
     <TypeofTransaction>Delivery Order</TypeofTransaction> 
    </doc> 
    <doc spendingCategory="Contracts"> 
     <record_count/> 
     <AwardType>Definitive Contract</AwardType> 
     <ContractPricing>Firm Fixed Price</ContractPricing> 
     <ContractingAgency>DEPT OF THE ARMY</ContractingAgency> 
     <DUNSNumber>835551474</DUNSNumber> 
     <parentDUNSNumber>001344142</parentDUNSNumber> 
     <DateSigned>2012-06-06T04:00:00Z</DateSigned> 
     <ContractDescription>MULTI SERVICE, 5 YR, MULTI-YR CONTRACT FOR H-60 HELICOPTERS. FY2012 ¿ FY2016 PRODUCTION CONTRACT FOR ARMY/NAVY/FMS UH/HH/MH-60 HELICOPTERS TO INCLUDE PROCUREMENT OF UP TO 916 EACH AIRCRAFT AND RELATED SUPPORT, SERVICES, SYSTEMS/PROJECT MANAGEMENT, PUBLICATIONS, AND TECHNICAL DATA. FMS COUNTRIES INCLUDE SAUDI ARABIAN NATIONAL GUARD (SANG), TAIWAN, THAILAND AND ROYAL AUSTRALIAN NAVY (RAN).</ContractDescription> 
     <ReasonForModification/> 
     <DollarsObligated>1284346737.00</DollarsObligated> 
     <ExtentCompeted>NOT COMPETED</ExtentCompeted> 
     <FiscalYear>2012</FiscalYear> 
     <TransactionNumber>2</TransactionNumber> 
     <FundingAgency>2100</FundingAgency> 
     <IDVProcurementInstrumentID/> 
     <MajorAgency>9700</MajorAgency> 
     <ContractingAgencyCode>2100</ContractingAgencyCode> 
     <MajorFundingAgency>9700</MajorFundingAgency> 
     <ModificationNumber>0</ModificationNumber> 
     <PSCCategoryCode>1520</PSCCategoryCode> 
     <ParentRecipientOrCompanyName>UNITED TECHNOLOGIES CORPORATION</ParentRecipientOrCompanyName> 
     <PlaceofPerformanceCongDistrict>CT03</PlaceofPerformanceCongDistrict> 
     <PlaceofPerformanceState>CONNECTICUT</PlaceofPerformanceState> 
     <PlaceofPerformanceZipCode>066141385</PlaceofPerformanceZipCode> 
     <PrincipalNAICSCode>336411</PrincipalNAICSCode> 
     <ProcurementInstrumentID>W58RGZ12C0008</ProcurementInstrumentID> 
     <PrincipalPlaceCountyOrCity/> 
     <ProductorServiceCode>1520</ProductorServiceCode> 
     <ProgramSource/> 
     <ProgramSourceAccountCode>8242</ProgramSourceAccountCode> 
     <ProgramSourceAgencyCode>11</ProgramSourceAgencyCode> 
     <ProgramSourceDescription/> 
     <RecipientAddressLine123>6900 MAIN ST, , </RecipientAddressLine123> 
     <RecipientCity>STRATFORD</RecipientCity> 
     <RecipientCongressionalDistrict>CT03</RecipientCongressionalDistrict> 
     <RecipientCountyName>FAIRFIELD</RecipientCountyName> 
     <RecipientName>SIKORSKY AIRCRAFT CORPORATION</RecipientName> 
     <RecipientOrContractorName>SIKORSKY AIRCRAFT CORPORATION</RecipientOrContractorName> 
     <RecipientState>CT</RecipientState> 
     <RecipientZipCode>066141385</RecipientZipCode> 
     <TypeofSpending>c</TypeofSpending> 
     <TypeofTransaction>Definitive Contract</TypeofTransaction> 
    </doc> 
    </result> 
</usaspendingSearchResults>

источник

2013-06-17 E. Vincenti

ответ

3 
require(XML) 
require(RCurl) 
rURL <- "http://usaspending.gov/fpds/fpds.php?detail=b&fiscal_year=2012&maj_agency_cat=97&max_records=10" 
rData <- getURL(rURL, useragent = 'mozilla', followlocation = TRUE) 
xData <- xmlParse(rData)

Наблюдайте

> xmlNamespaceDefinitions(xData ,simplify = TRUE) 
             xsi 
"http://www.w3.org/2001/XMLSchema-instance" 

      "http://usaspending.gov/schemas/" 
attr(,"class") 
[1] "SimplifiedXMLNamespaceDefinitions" "XMLNamespaceDefinitions"

так есть несколько ОПРЕДЕЛЕНИЙ пространства имен. Tell R, который должен использовать

test <- xpathApply(xData, "//def:DateSigned" 
         , namespaces = c(def = "http://usaspending.gov/schemas/")) 


> test 
[[1]] 
<DateSigned>2012-03-08T05:00:00Z</DateSigned> 

[[2]] 
<DateSigned>2012-01-31T05:00:00Z</DateSigned> 

[[3]] 
<DateSigned>2012-05-31T04:00:00Z</DateSigned> 

[[4]] 
<DateSigned>2012-06-22T04:00:00Z</DateSigned>

Для получения дополнительной информации см. How can I use xpath querying using R's XML library?.

От `? XpathApply»

Когда пространство имен определяется на узле в документе XML, Н. XPath выражения должны использовать пространство имен, даже если это пространство имен по умолчанию для документа XML/узел. Например, предположим, что у нас есть XML-документ «...». К найти все узлы темы, мы могли бы использовать выражение XPath ''/help/topic "'. Однако мы должны использовать явный префикс пространства имен , связанный с URI 'http://www.r-project.org/Rd', соответствующий тому, который содержится в документе XML . Поэтому мы будем использовать «getNodeSet (doc,«/r: help/r: topic », c (r =" http://www.r-project.org/Rd ")) '.

источник

2013-06-18 04:34:34 user1609452

0

Есть довольно много онлайн-инструментов, которые вы можете играть с, чтобы проверить свои XPath против XML, как:

У первого даже есть некоторые минимальные описания из 1 строки в наиболее распространенных случаях. Вероятно, это может вам помочь. Это может быть тривиальная проблема с отображением пространства имен, иначе ваш XPath выглядит нормально для меня.

источник

2013-06-18 01:01:27 rlegendi

1

Другой способ:

test = getNodeSet(doc, "//*[local-name() = 'DateSigned']")

источник

2013-06-18 12:01:52 topchef

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