scaleDenominatorAt method

double scaleDenominatorAt({
  1. required double latitude,
  2. required int zoom,
  3. double screenPPI = screenPPIbyOGC,
})

The map scale denominator at given latitude, zoom and screenPPI.

By default screenPPI of ~ 90.7 ppi is used (based on a screen pixel of 0.28 mm defined by OGC). Another common value is 96 ppi.

Implementation

double scaleDenominatorAt({
  required double latitude,
  required int zoom,
  double screenPPI = screenPPIbyOGC,
}) =>
    pixelGroundResolutionAt(latitude: latitude, zoom: zoom) *
    screenPPI /
    0.0254;