linear method

List<TimeSeriesPoint> linear({
  1. required DateTime start,
  2. required DateTime end,
  3. required Duration interval,
  4. double startValue = 0,
  5. double slope = 1,
  6. double noise = 0,
})

Generates a simple linear trend.

Implementation

List<TimeSeriesPoint> linear({
  required DateTime start,
  required DateTime end,
  required Duration interval,
  double startValue = 0,
  double slope = 1,
  double noise = 0,
}) {
  final points = <TimeSeriesPoint>[];
  var current = start;
  int step = 0;

  while (!current.isAfter(end)) {
    final value = startValue + slope * step + _random.normal(0, noise);
    points.add(TimeSeriesPoint(timestamp: current, value: value));
    current = current.add(interval);
    step++;
  }

  return points;
}