51 lines
1.6 KiB
R
51 lines
1.6 KiB
R
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library(rvest)
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library(dplyr)
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library(tidyr)
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# sudo crontab -e
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# 5 9 * * * su matt -c "cd /home/matt/ham-radio-licenses/; Rscript /home/matt/ham-radio-licenses/scrape-arrl-fcc.R">/dev/null 2>&1
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arrl_url <- "https://www.arrl.org/fcc-license-counts"
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# Read the page
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d_raw <- read_html(arrl_url)
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# Get date
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date_raw <- d_raw %>%
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html_nodes(xpath = "/html/body/div[1]/div/div[2]/div/div[2]/div[1]/p[2]/em") %>%
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# Get date
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html_text() %>%
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gsub(".*, ","",.) %>%
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as.Date(format = "%d-%b-%Y")
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# Get table and clean up
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tab <- d_raw %>%
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html_nodes(xpath="/html/body/div[1]/div/div[2]/div/div[2]/div[1]/table") %>%
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html_table() %>%
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.[[1]] %>%
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# Add date col
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bind_cols(Date = date_raw, .) %>%
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# Insert Tech Plus for compatibility
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mutate("Tech-Plus" = NA,
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.before = General) %>%
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mutate(a=NA, b=NA, c=NA, d=NA, e=NA, f=NA, g=NA,
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source_name = "ARRL FCC License Counts",
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source_detail = "http://www.arrl.org/fcc-license-counts")
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# Append table
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write.table(tab, file = "out/arrl-fcc-licenses-scraped.csv", sep = ",",
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append = TRUE, quote = FALSE,
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col.names = TRUE, row.names = FALSE,
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na = "")
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# Clean up table to remove any duplicates (sometimes the page isn't updated regularly)
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db <- read.csv("out/arrl-fcc-licenses-scraped.csv")
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db2 <- db %>% distinct(.keep_all = TRUE) %>%
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filter(Date != "Date")
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write.csv(db2, "out/arrl-fcc-licenses-scraped.csv",
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quote = F,
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row.names = F,
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na = "")
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