Created
April 1, 2020 02:32
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library(rvest) | |
baseurl <- "https://washingtondc.craigslist.org/search/doc/jjj" | |
raw_query_list <- | |
lapply( | |
paste0( baseurl , "?s=" , seq( 0 , 1469 , 120 ) ) , | |
xml2::read_html | |
) | |
raw_ads_list <- lapply( raw_query_list , html_nodes , "li.result-row" ) | |
raw_ads_times <- lapply( raw_ads_list , html_node , 'time' ) | |
datetimes <- lapply( raw_ads_times , html_attr , 'datetime' ) | |
plot( as.Date( unlist( datetimes ) ) ) | |
march_day <- as.numeric( format( as.Date( unlist( datetimes ) ) , "%d") ) | |
hist( | |
march_day , | |
main = "district of columbia job postings on craigslist.org" , | |
xlab = 'day in march' , | |
breaks = 1:31 , | |
axes = FALSE | |
) | |
axis( side = 1 , at = seq( 1 , 31 ) ) | |
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