library(data.table)
# Download: https://apps.fas.usda.gov/psdonline/downloads/psd_alldata_csv.zip
# Unzip it to psd_alldata.csv
psd_data <- fread('psd_alldata.csv', colClasses = 'character')
psd_data[, measuredElementPsd := paste(Attribute_ID, Unit_ID, sep = '.')][, `:=`(Attribute_ID = NULL, Unit_ID = NULL, Calendar_Year = NULL, Month = NULL, Commodity_Description = NULL, Country_Name = NULL, Attribute_Description = NULL, Unit_Description = NULL)]
setnames(psd_data, c("Country_Code", "Commodity_Code", "Market_Year"), c("geographicUsda", "measuredItemPsd", "timePointYears"))
psd_data <- psd_data[measuredElementPsd %in% GetCodeList('usda', 'usda_psd', 'measuredElementPsd')$code]
psd_data <- psd_data[geographicUsda %in% GetCodeList('usda', 'usda_psd', 'geographicUsda')$code]
setcolorder(psd_data, c("geographicUsda", "measuredElementPsd", "measuredItemPsd", "timePointYears", "Value"))
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