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- library(dplyr)
- system.time(df3 <- left_join(select(df1, lat, lon, id, time_hour),
- select(df2, lat, lon, var1, var2, time_words),
- by = c('lat', 'lon', 'time_hour' = 'time_words')
- )
- )
- #21.37 seconds
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