Get the measure false origin and units.
[Visual Basic .NET] Public Sub GetMFalseOriginAndUnits ( _ ByRef falseM As Double, _ ByRef mUnits As Double _ )
[C#] public void GetMFalseOriginAndUnits ( ref double falseM, ref double mUnits );
[C++]
HRESULT GetMFalseOriginAndUnits(
double* falseM,
double* mUnits
);
[C++]Parameters
falseM [out] falseM is a parameter of type double mUnits [out] mUnits is a parameter of type double
Product Availability
Description
An alternative method to the GetMDomain method. The falseM value corresponds to the minimum measure value of the measure domain. The mUnits is the same as the precision or scale value. The inverse of the mUnits defines the resolution of the measure data stored in the geodatabase. The resolution is used to snap data when it is stored in the geodatabase.
//This code example shows how to get the M false origin and units of a dataset
//Make sure that the features in the featureClass contain falseM values
private void GetMFalseOriginAndUnits(IFeatureClass featureClass)
{
IGeoDataset geoDataset = featureClass as IGeoDataset;
//get access to SpatialReference through IGeoDataset
ISpatialReference spatialReference = geoDataset.SpatialReference;
//get the M false origin and units of the dataset
double falseM;
double mUnits;
spatialReference.GetMFalseOriginAndUnits(out falseM, out mUnits);
System.Windows.Forms.MessageBox.Show(falseM + ", " + mUnits);
}
'This code example shows how to get the M false origin and units of a 'dataset.
'This example assumes that a valid workspace object has already 'been established.
Sub GetMFalseOriginAndUnits_Example(ByVal pWorkspace As IWorkspace)
Dim pFeatWS As IFeatureWorkspace
pFeatWS = pWorkspace
Dim pFeatDS As IFeatureDataset
pFeatDS = pFeatWS.OpenFeatureDataset("railroad")
Dim pGeoDataset As IGeoDataset
pGeoDataset = pFeatDS
'get access to SpatialReference through IGeoDataset
Dim pSpatRef As ISpatialReference
pSpatRef = pGeoDataset.SpatialReference
'dimension variables that will be used to store the
'M false origin and units of the dataset
Dim dFalseM As Double
Dim dMUnits As Double
'get the M false origin and units of the dataset
pSpatRef.GetMFalseOriginAndUnits(dFalseM, dMUnits)
Debug.Print(dFalseM & ", " & dMUnits)
End Sub