id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
aps-64	Kimpton, Anthony	Visualising Australia’s older population using grid maps	2020	3	.pdf	application/pdf	990	52	40	There are four critical dimensions when examining population age structures, namely: (1) numbers; (2) characteristics and values; (3) proportions of the population in particular age groups; and (4) spatial distribution (Hugo 2003). For instance, the symbols scaled according to population structure reveal that there are areas without symbols, indicating that fewer than 1 percent of the gridded population are aged 65 or older.	cache/aps-64.pdf	txt/aps-64.txt