import “day”; import “interval”; import “time”;
d3.time.year = d3_time_interval(function(date) {
date = d3.time.day(date); date.setMonth(0, 1); return date;
}, function(date, offset) {
date.setFullYear(date.getFullYear() + offset);
}, function(date) {
return date.getFullYear();
});
d3.time.years = d3.time.year.range; d3.time.years.utc = d3.time.year.utc.range;