private void CreateReachabilityPatch(GraphPatch graphPatch)
{
GridData grid = new GridData(graphPatch.grid, false);
grid.InitGridValues();
grid.minValue = 0;
grid.maxValue = traveTimeSlider.value * travelTimeScale;
grid.minFilter = grid.maxFilter = 0;
grid.metadata = null;
reachabilityPatch = reachabilityLayer.CreateGridPatch(graphPatch.GetSiteName(), graphPatch.Level, DateTime.Now.Year, grid);
dataLayers.UpdateLayer(reachabilityLayer);
}
