How to convert between high and low precision spatial references

Summary This article shows how to convert a low-precision spatial reference (pre-9.2) to a high-precision spatial reference.

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Converting between high and low precision spatial references

The following code example shows how to convert between high and low precision spatial references:
 

[Java] 
static void lowHighConversion_Example(IFeatureClass pre92FeatureClass)throws
    Exception
{
    IGeoDataset pre92GeoDataset = (IGeoDataset)pre92FeatureClass;

    ISpatialReference pre92SpatialReference =
        pre92GeoDataset.getSpatialReference();

    double falseX[] = new double[1];
    double falseY[] = new double[1];
    double xyUnits[] = new double[1];
    pre92SpatialReference.getFalseOriginAndUnits(falseX, falseY, xyUnits);

    System.out.println("Low precision coordinate grid definition:\n" + 
        "false x: " + falseX[0] + ", false y: " + falseY[0] + 
        ", scale factor: " + xyUnits[0]);


    ISpatialReferenceFactory3 spatialReferenceFactory = new
        SpatialReferenceEnvironment();
    ISpatialReference spatialReference92 =
        spatialReferenceFactory.constructHighPrecisionSpatialReference
        (pre92SpatialReference,  - 1,  - 1,  - 1);

    spatialReference92.getFalseOriginAndUnits(falseX, falseY, xyUnits);
    System.out.println("high precision coordinate grid definition:\n" + 
        "false x: " + falseX[0] + ", false y: " + falseY[0] + 
        ", scale factor: " + xyUnits[0]);
}


See Also:

How to construct a high or low precision spatial reference