popbyage = function(age) { let pop; if (age == 0) { pop = d3.sum(population, d => +d.total); } if (age == 9) { pop = d3.sum( population .filter(d => +d.age_révolu >= 0) .filter(d => +d.age_révolu <= 9), d => +d.total ); } if (age == 17) { pop = d3.sum( population .filter(d => +d.age_révolu >= 17) .filter(d => +d.age_révolu <= 17), d => +d.total ); } if (age == 24) { pop = d3.sum( population .filter(d => +d.age_révolu >= 18) .filter(d => +d.age_révolu <= 24), d => +d.total ); } if (age == 29) { pop = d3.sum( population .filter(d => +d.age_révolu >= 25) .filter(d => +d.age_révolu <= 29), d => +d.total ); } if (age == 39) { pop = d3.sum( population .filter(d => +d.age_révolu >= 30) .filter(d => +d.age_révolu <= 39), d => +d.total ); } if (age == 49) { pop = d3.sum( population .filter(d => +d.age_révolu >= 40) .filter(d => +d.age_révolu <= 49), d => +d.total ); } if (age == 59) { pop = d3.sum( population .filter(d => +d.age_révolu >= 50) .filter(d => +d.age_révolu <= 59), d => +d.total ); } if (age == 69) { pop = d3.sum( population .filter(d => +d.age_révolu >= 60) .filter(d => +d.age_révolu <= 69), d => +d.total ); } if (age == 74) { pop = d3.sum( population .filter(d => +d.age_révolu >= 70) .filter(d => +d.age_révolu <= 74), d => +d.total ); } if (age == 79) { pop = d3.sum( population .filter(d => +d.age_révolu >= 75) .filter(d => +d.age_révolu <= 79), d => +d.total ); } if (age == 80) { pop = d3.sum(population.filter(d => +d.age_révolu >= 80), d => +d.total); } return pop; }