0
所以我想抓取一些NBA数据。以下是我迄今为止,它是完美的功能:使用rvest访问html表格
install.packages('rvest')
library(rvest)
url = "https://www.basketball-reference.com/boxscores/201710180BOS.html"
webpage = read_html(url)
table = html_nodes(webpage, 'table')
data = html_table(table)
away = data[[1]]
home = data[[3]]
colnames(away) = away[1,] #set appropriate column names
colnames(home) = home[1,]
away = away[away$MP != "MP",] #remove rows that are just column names
home = home[home$MP != "MP",]
的问题是,这些表不包括球队的名字,这是很重要的。为了获得这些信息,我想我会在网页上刮掉四个因素表,但是,rvest似乎并不认为这是一张表。包含四个因素表DIV的是:
<div class="overthrow table_container" id="div_four_factors">
并且表:
<table class="suppress_all sortable stats_table now_sortable" id="four_factors" data-cols-to-freeze="1"><thead><tr class="over_header thead">
这让我觉得,我可以沿着
table = html_nodes(webpage,'#div_four_factors')
行通过一些访问表
但这似乎不工作,因为我只是得到一个空的列表。我怎样才能访问四个因素表?