我正试图从这个网页上的“团队统计”表中获取数据:
https://www.hockey-reference.com/teams/CGY/2010.html
我对web抓取没有太多经验,但是尝试了一些xml包,现在又尝试了rvest包:

library(rvest)

url <- html("https://www.hockey-reference.com/teams/CGY/2010.html")

url %>%
        html_node(xpath = "//*[@id='team_stats']")

最后出现了一个看似单一的节点:
{xml_node}
<table class="sortable stats_table" id="team_stats" data-cols-to-freeze="1">
[1] <caption>Team Statistics Table</caption>
[2] <colgroup>\n<col>\n<col>\n<col>\n<col>\n<col>\n<col>\n<col>\ ...
[3] <thead><tr>\n<th aria-label="Team" data-stat="team_name" sco ...
[4] <tbody>\n<tr>\n<th scope="row" class="left " data-stat="team ...

如何解析它以获取两行表中的标题和信息?

最佳答案

您只需在链的末尾添加html_table

library(rvest)

url <- read_html("https://www.hockey-reference.com/teams/CGY/2010.html")

url %>%
  html_node(xpath = "//*[@id='team_stats']") %>%
  html_table()

或者:
library(rvest)

url %>%
  html_table() %>%
  .[[1]]

两种解决方案都返回:
            Team AvAge GP  W  L OL PTS  PTS%  GF  GA   SRS  SOS TG/G PP PPO   PP% PPA PPOA   PK% SH SHA    S  S%   SA   SV%   PDO
1 Calgary Flames  28.8 82 40 32 10  90 0.549 201 203 -0.03 0.04 5.05 43 268 16.04  54  305 82.30  7   1 2350 8.6 2367 0.916 100.1
2 League Average  27.9 82 41 31 10  92 0.561 233 233  0.00 0.00 5.68 56 304 18.23  56  304 81.77  6   6 2486 9.1 2479 0.911    NA

关于r - R-用rvest包刮,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/50146342/

10-10 16:51