Subset data frame for abstracts published in a specific period only.
subset_year(df, col.year = Year, start = NULL, end = NULL)Data frame containing publication years.
Symbol. Column containing publication years.
Integer. Optional. Beginning of
publication period.
If start = NULL, start is set to the least recent year in df.
Integer. Optional. End of
publication period.
If end = NULL, end is set to the most recent year in df.
Data frame containing abstracts published in a specific period only.
Subset data frame for abstracts published in a specific period only. All other abstracts published not within this period are silently dropped.
subset_research(), subset_review()
Other subset functions:
subset_df(),
subset_mir_threshold(),
subset_mir(),
subset_research(),
subset_review(),
subset_snp()