我有以下XML输出。目标是从String行中提取所有值，并将值存储在此行dataframe中。我将R与XML包一起使用。我的代码使用了许多for循环，无法提取这些值。是否有更好的功能或代码来提取这些值？我想要提取并存储在数据框中的值是：“wc”，“content”，“height”，“width”，“vpos”，“hpos”来自String行。
<Layout>
<Page ID="Page1" PHYSICAL_IMG_NR="1" HEIGHT="3440" WIDTH="2352">
<BottomMargin HEIGHT="3440" WIDTH="2352" VPOS="0" HPOS="0">
<TextBlock ID="Page1_Block1" HEIGHT="222" WIDTH="586" VPOS="466" HPOS="891" language="nl">
<Shape>
<Polygon POINTS="908,503 1489,503 1489,710 908,710 908,503"/>
</Shape>
<TextLine HEIGHT="35" WIDTH="264" VPOS="472" HPOS="902">
<String WC="0.8519999981" CONTENT="SHELL" HEIGHT="30" WIDTH="92" VPOS="472" HPOS="902"/>
<SP WIDTH="20" VPOS="474" HPOS="995"/>
<String WC="0.5462499857" CONTENT="MAATVELD" HEIGHT="32" WIDTH="150" VPOS="475" HPOS="1016"/>
</TextLine>
<TextLine HEIGHT="36" WIDTH="227" VPOS="511" HPOS="901">
<String WC="0.5287500024" CONTENT="RIJKSWEG" HEIGHT="34" WIDTH="150" VPOS="511" HPOS="901"/>
<SP WIDTH="20" VPOS="516" HPOS="1052"/>
<String WC="0.296666652" CONTENT="A20" HEIGHT="31" WIDTH="55" VPOS="515" HPOS="1073"/>
</TextLine>
<TextLine HEIGHT="42" WIDTH="418" VPOS="550" HPOS="900">
<String WC="0.4427272677" CONTENT="NIEUWERKERK" HEIGHT="36" WIDTH="207" VPOS="550" HPOS="900"/>
<SP WIDTH="21" VPOS="556" HPOS="1108"/>
<String WC="0.2633333206" CONTENT="A/D" HEIGHT="31" WIDTH="54" VPOS="557" HPOS="1130"/>
<SP WIDTH="20" VPOS="558" HPOS="1185"/>
<String WC="0.4916666746" CONTENT="IJSSEL" HEIGHT="33" WIDTH="112" VPOS="559" HPOS="1206"/>
</TextLine>
<TextLine HEIGHT="51" WIDTH="570" VPOS="591" HPOS="898">
<String WC="0.4333333373" CONTENT="BTW" HEIGHT="31" WIDTH="54" VPOS="591" HPOS="899"/>
<SP WIDTH="21" VPOS="592" HPOS="954"/>
<String WC="0.6039999723" CONTENT="Shop:" HEIGHT="38" WIDTH="87" VPOS="593" HPOS="975"/>
<SP WIDTH="27" VPOS="595" HPOS="1063"/>
<String WC="0.4900000095" CONTENT="NL" HEIGHT="30" WIDTH="34" VPOS="596" HPOS="1091"/>
<SP WIDTH="21" VPOS="597" HPOS="1126"/>
<String WC="0.6335294247" CONTENT="81.82.19.233.B.01" HEIGHT="39" WIDTH="321" VPOS="597" HPOS="1147"/>
</TextLine>
<TextLine HEIGHT="44" WIDTH="304" VPOS="631" HPOS="897">
<String WC="0.6299999952" CONTENT="BTW" HEIGHT="31" WIDTH="54" VPOS="631" HPOS="898"/>
<SP WIDTH="21" VPOS="632" HPOS="953"/>
<String WC="0.5933333039" CONTENT="Types:" HEIGHT="39" WIDTH="106" VPOS="633" HPOS="974"/>
<SP WIDTH="27" VPOS="636" HPOS="1081"/>
<String WC="0.6980000138" CONTENT="0.1.3" HEIGHT="32" WIDTH="92" VPOS="636" HPOS="1109"/>
</TextLine>
</TextBlock>
<TextBlock ID="Page1_Block3" HEIGHT="218" WIDTH="378" VPOS="782" HPOS="902" language="nl">
<Shape>
<Polygon POINTS="927,819 1300,819 1300,1027 927,1027 927,819"/>
</Shape>
<TextLine HEIGHT="28" WIDTH="117" VPOS="788" HPOS="914">
<String WC="0.5157142878" CONTENT="ARTTKFI" HEIGHT="28" WIDTH="117" VPOS="788" HPOS="914"/>
</TextLine>
<TextLine HEIGHT="45" WIDTH="361" VPOS="828" HPOS="912">
<String WC="0.3000000119" CONTENT="D2Gb" HEIGHT="32" WIDTH="73" VPOS="828" HPOS="913"/>
<SP WIDTH="21" VPOS="830" HPOS="986"/>
<String WC="0.5366666913" CONTENT="Brd" HEIGHT="31" WIDTH="56" VPOS="831" HPOS="1007"/>
<SP WIDTH="22" VPOS="832" HPOS="1063"/>
<String WC="0.6299999952" CONTENT="Tonijn" HEIGHT="38" WIDTH="112" VPOS="833" HPOS="1085"/>
<SP WIDTH="21" VPOS="836" HPOS="1197"/>
<String WC="0.6100000143" CONTENT="MSC" HEIGHT="32" WIDTH="55" VPOS="836" HPOS="1218"/>
</TextLine>
<TextLine HEIGHT="46" WIDTH="353" VPOS="867" HPOS="911">
<String WC="0.4950000048" CONTENT="D2Gb" HEIGHT="33" WIDTH="74" VPOS="867" HPOS="911"/>
<SP WIDTH="21" VPOS="870" HPOS="985"/>
<String WC="0.4659999907" CONTENT="Extra" HEIGHT="32" WIDTH="94" VPOS="871" HPOS="1006"/>
<SP WIDTH="21" VPOS="873" HPOS="1100"/>
<String WC="0.5537499785" CONTENT="Speltbol" HEIGHT="40" WIDTH="143" VPOS="873" HPOS="1121"/>
</TextLine>
<TextLine HEIGHT="39" WIDTH="279" VPOS="907" HPOS="909">
<String WC="0.2820000052" CONTENT="CCola" HEIGHT="34" WIDTH="95" VPOS="907" HPOS="909"/>
<SP WIDTH="20" VPOS="910" HPOS="1004"/>
<String WC="0.474999994" CONTENT="Zero" HEIGHT="33" WIDTH="75" VPOS="910" HPOS="1024"/>
<SP WIDTH="21" VPOS="912" HPOS="1099"/>
<String WC="0.4275000095" CONTENT="33cl" HEIGHT="33" WIDTH="68" VPOS="913" HPOS="1120"/>
</TextLine>
<TextLine HEIGHT="45" WIDTH="286" VPOS="947" HPOS="908">
<String WC="0.6075000167" CONTENT="Puro" HEIGHT="33" WIDTH="75" VPOS="947" HPOS="908"/>
<SP WIDTH="21" VPOS="949" HPOS="983"/>
<String WC="0.4560000002" CONTENT="Cappuccino" HEIGHT="42" WIDTH="190" VPOS="950" HPOS="1004"/>
</TextLine>
</TextBlock>
</BottomMargin>
</Page>
</Layout>
答案 0 :(得分：2)
您可以使用包rvest（我将您的数据放入test.xml）：
library(rvest)
test <- read_xml("~/test.xml") %>% xml_nodes("String") %>% xml_attrs()
test <- do.call("rbind", test)
head(test)
WC CONTENT HEIGHT WIDTH VPOS HPOS
[1,] "0.8519999981" "SHELL" "30" "92" "472" "902"
[2,] "0.5462499857" "MAATVELD" "32" "150" "475" "1016"
[3,] "0.5287500024" "RIJKSWEG" "34" "150" "511" "901"
[4,] "0.296666652" "A20" "31" "55" "515" "1073"
[5,] "0.4427272677" "NIEUWERKERK" "36" "207" "550" "900"
[6,] "0.2633333206" "A/D" "31" "54" "557" "1130"
答案 1 :(得分：0)
或者，考虑XML包解决方案：
File "D:/Python/sample codes/pygame.py", line 2, in <module> import pygame
File "D:/Python/sample codes\pygame.py", line 3, in <module> from pygame.locals import * ImportError: No module named locals