ham-radio-licenses/bin/scrape-ae7q-mass.R
2024-09-29 18:10:44 -05:00

71 lines
2.5 KiB
R

# Counts of license actions by date
# Use this file to scrape a series of dates from AE7Q
# Set start and end date
date_vec <- seq(as.Date("2004-11-29"), as.Date("2024-07-22"), by="days")
# Randomize dates we are querying
date_vec <- sample(date_vec)
dvbackup <- date_vec
date_vec <- date_vec[1687:7176]
ae7q_list <- list()
for(i in 1:length(date_vec)){
ae7q_new_url <- paste0("https://www.ae7q.com/query/list/ProcessDate.php?DATE=", date_vec[i])
print(ae7q_new_url)
# Read the page
ae7q_new_raw <- read_html(ae7q_new_url)
# Make sure the new license table exists first
if(!grepl("No license grants found issued on", ae7q_new_raw %>% html_text())){
# Get tables and clean up
ae7q_new_tables <- ae7q_new_raw %>%
html_elements(xpath = "//table") %>%
html_table()
# Find the right table by the column names
right_table_id <- grep(paste(c("Callsign",
"Region/ State",
"Entity Name",
"Applicant Type",
"Licensee Class",
"License Status",
"Action Type"), collapse = " "),
lapply(ae7q_new_tables, function(x) paste(names(x), collapse = " ")))
ae7q_table_new <- ae7q_new_tables[[right_table_id]]
ae7q_list[[i]] <- ae7q_table_new %>%
#mutate(across(everything(), ~na_if(., "\""))) %>%
mutate(across(everything(),
~ case_when(. == "\"" ~ NA,
TRUE ~ .))) %>%
fill(everything()) %>%
group_by(`Action Type`) %>%
summarize(count = n(), .groups = "keep") %>%
mutate(date = date_vec[i],
source = "AE7Q", source_detail = ae7q_new_url) %>%
relocate(date)
} else {
ae7q_list[[i]]<- data.frame("date" = date_vec[i],
"Action Type" = NA,
"count" = NA,
"source" = "AE7Q",
"source_detail" = ae7q_new_url)
}
# Wait for random time up to 10 seconds
Sys.sleep(sample(1:5, 1))
}
# Combine all the data and sort by date
a <- bind_rows(ae7q_list) %>%
arrange(date) %>%
filter(!is.na(date))
write.csv(a, "out/ae7q-actions-scraped03.csv", row.names = F)