private static SkimValue GetValue(int origin, int destination, RosterEntry entry, int minute)
{
if (entry.Name == null)
{
return(new SkimValue());
}
SkimMatrix skimMatrix = _skimMatrices[entry.MatrixIndex];
if (skimMatrix.IsEmpty())
{
return(new SkimValue {
Variable = 0, BlendVariable = 0
});
}
if (skimMatrix == null)
{
throw new SkimMatrixNotFoundException(string.Format("There is not a skim matrix defined for the combination of variable: {0}, mode: {1}, path type: {2}, and minute: {3}. Please adjust the roster accordingly.", entry.Variable, entry.Mode, entry.PathType, minute));
}
SkimValue skimValue = new SkimValue {
Variable = entry.Transpose ? skimMatrix.GetValue(destination, origin) : skimMatrix.GetValue(origin, destination)
};
skimValue.Variable = skimValue.Variable / entry.Scaling;
skimValue.Variable = skimValue.Variable * entry.Factor;
return(skimValue);
}
public static SkimValue GetValue(string variable, int mode, int pathType, double vot, int minute, int origin, int destination)
{
int votGroup = GetVotGroup(vot);
RosterEntry entry = GetEntry(variable, mode, pathType, votGroup, minute);
SkimValue skimValue = GetValue(origin, destination, entry, minute);
//mb fix for 0 intrazonals
if (origin == destination && skimValue.Variable < Constants.EPSILON)
{
if (variable == "distance")
{
skimValue.Variable = 0.25 * Global.Settings.DistanceUnitsPerMile;
}
else if (variable == "ivtime" || variable == "time" || variable == "ivtfree")
{
skimValue.Variable =
(mode == Global.Settings.Modes.Walk) ? 5 :
(mode == Global.Settings.Modes.Bike) ? 2 :
(mode > Global.Settings.Modes.Bike && mode < Global.Settings.Modes.Transit) ? 1 : 0;
}
}
if (string.IsNullOrEmpty(entry.BlendVariable))
{
return(skimValue);
}
RosterEntry blendEntry =
entry.BlendPathType == Global.Settings.PathTypes.None
? GetEntry(entry.BlendVariable, entry.Mode, entry.PathType, votGroup, minute)
: GetEntry(entry.BlendVariable, entry.Mode, entry.BlendPathType, votGroup, minute);
SkimValue blendSkimValue = GetValue(origin, destination, blendEntry, minute);
skimValue.BlendVariable = blendSkimValue.Variable;
//mb fix for 0 intrazonals. Assumes blend variable is distance
if (origin == destination && skimValue.BlendVariable < Constants.EPSILON)
{
skimValue.BlendVariable = 0.25 * Global.Settings.DistanceUnitsPerMile;
}
return(skimValue);
}
public static SkimValue GetValue(string variable, int mode, int pathType, double vot, int minute, IPoint origin, IPoint destination, double circuityDistance = Constants.DEFAULT_VALUE)
{
int votGroup = GetVotGroup(vot);
RosterEntry entry = GetEntry(variable, mode, pathType, votGroup, minute);
SkimValue skimValue = GetValue(origin.ZoneId, destination.ZoneId, entry, minute);
//mb fix for 0 intrazonals
if (Global.Configuration.DestinationScale == Global.Settings.DestinationScales.Zone && origin.ZoneId == destination.ZoneId && skimValue.Variable < Constants.EPSILON)
{
if (variable == "distance")
{
skimValue.Variable = 0.25 * Global.Settings.DistanceUnitsPerMile;
}
else if (variable == "ivtime" || variable == "time" || variable == "ivtfree")
{
skimValue.Variable =
(mode == Global.Settings.Modes.Walk) ? 5 :
(mode == Global.Settings.Modes.Bike) ? 2 :
(mode > Global.Settings.Modes.Bike && mode < Global.Settings.Modes.Transit) ? 1 : 0;
}
}
if (string.IsNullOrEmpty(entry.BlendVariable))
{
return(skimValue);
}
RosterEntry blendEntry =
entry.BlendPathType == Global.Settings.PathTypes.None
? GetEntry(entry.BlendVariable, entry.Mode, entry.PathType, votGroup, minute)
: GetEntry(entry.BlendVariable, entry.Mode, entry.BlendPathType, votGroup, minute);
SkimValue blendSkimValue = GetValue(origin.ZoneId, destination.ZoneId, blendEntry, minute);
if (Global.Configuration.DestinationScale == Global.Settings.DestinationScales.Zone)
{
//skimValue.BlendVariable = blendSkimValue.BlendVariable;
skimValue.BlendVariable = blendSkimValue.Variable; //JLB replaced above line 20130628
//mb fix for 0 intrazonals. Assumes blend variable is distance
if (origin.ZoneId == destination.ZoneId && skimValue.BlendVariable < Constants.EPSILON)
{
skimValue.BlendVariable = 0.25 * Global.Settings.DistanceUnitsPerMile;
}
return(skimValue);
}
double networkDistance = blendSkimValue.Variable;
double networkFraction = networkDistance / Global.Configuration.MaximumBlendingDistance;
if (networkFraction > 1)
{
networkFraction = 1;
}
//intrazonals - use network fraction = 0, so blend distance is XY distance
if (origin.ZoneId == destination.ZoneId)
{
networkFraction = 0;
}
double xyDistance;
if (networkFraction >= 1)
{
// no blending
xyDistance = networkDistance;
}
else if (circuityDistance > Constants.DEFAULT_VALUE + Constants.EPSILON)
{
// blending with circuity value
//Global.PrintFile.WriteLine("Distances: Network {0} Circuity {1} Orthogonal {2}", networkDistance, circuityDistance,
// (Math.Abs(origin.XCoordinate - destination.XCoordinate) + Math.Abs(origin.YCoordinate - destination.YCoordinate)) / 5280D);
xyDistance = circuityDistance;
}
else
{
if (Global.Configuration.DataType == "Actum")
{
xyDistance = (Math.Abs(origin.XCoordinate - destination.XCoordinate) + Math.Abs(origin.YCoordinate - destination.YCoordinate)) / 5280D;
}
else
{
// default is orthogonal distance, with a miniumum of 300 feet for intra-microzone
xyDistance = Math.Max(300D, (Math.Abs(origin.XCoordinate - destination.XCoordinate) + Math.Abs(origin.YCoordinate - destination.YCoordinate))) / 5280D;
}
}
if (networkDistance >= Constants.EPSILON && xyDistance >= Constants.EPSILON)
{
skimValue.BlendVariable = networkFraction * networkDistance + (1 - networkFraction) * xyDistance;
}
else if (xyDistance >= Constants.EPSILON)
{
skimValue.BlendVariable = xyDistance;
}
else if (networkDistance >= Constants.EPSILON)
{
skimValue.BlendVariable = networkDistance;
}
else
{
skimValue.BlendVariable = 0;
}
if (!skimValue.BlendVariable.AlmostEquals(Constants.DEFAULT_VALUE))
{
//new code for intrazonals allows overriding use of speed from skims
if (Global.Configuration.DataType != "Actum" && (origin.ZoneId == destination.ZoneId))
{
double minutesPerMile =
(mode == Global.Settings.Modes.Walk && Global.Configuration.IntrazonalWalkMinutesPerMile_OverrideSkims > Constants.EPSILON) ? Global.Configuration.IntrazonalWalkMinutesPerMile_OverrideSkims
: (mode == Global.Settings.Modes.Bike && Global.Configuration.IntrazonalBikeMinutesPerMile_OverrideSkims > Constants.EPSILON) ? Global.Configuration.IntrazonalBikeMinutesPerMile_OverrideSkims
: (mode >= Global.Settings.Modes.Sov && mode <= Global.Settings.Modes.Hov3 && Global.Configuration.IntrazonalAutoMinutesPerMile_OverrideSkims > Constants.EPSILON) ? Global.Configuration.IntrazonalAutoMinutesPerMile_OverrideSkims
: networkDistance >= Constants.EPSILON ? skimValue.Variable / networkDistance
: mode == Global.Settings.Modes.Walk ? 20.0
: mode == Global.Settings.Modes.Bike ? 6.0 : 3.0;
skimValue.Variable = skimValue.BlendVariable * minutesPerMile;
}
else if (networkDistance >= Constants.EPSILON)
{
double minutesPerMile = skimValue.Variable / networkDistance;
skimValue.Variable = skimValue.BlendVariable * minutesPerMile;
}
else // if networkDistance is 0 or tiny, cannot use pivot method, multiply blend distance by default speed depending on mode
// TODO: Make these constants for minutesPerMile configurable.
{
double minutesPerMile = entry.Mode == Global.Settings.Modes.Walk ? 20.0 :
entry.Mode == Global.Settings.Modes.Bike ? 6.0 : 3.0;
skimValue.Variable = skimValue.BlendVariable * minutesPerMile;
}
}
return(skimValue);
}
