投影法の変更（座標換算）

Public Sub Conversion()
    '空間参照の作成
    Dim pSpatialReferenceFactory As ISpatialReferenceFactory = New SpatialReferenceEnvironment
    Dim pGCS_JGD2000 As IGeographicCoordinateSystem = pSpatialReferenceFactory.CreateGeographicCoordinateSystem( _
        CType(esriSRGeoCS3Type.esriSRGeoCS_JapanGeodeticDatum2000, Integer))
    Dim pPCS_UTMZone54_JGD2000 As IProjectedCoordinateSystem = pSpatialReferenceFactory.CreateProjectedCoordinateSystem( _
        CType(esriSRProjCS4Type.esriSRProjCS_JGD2000_UTM_Zone_54N, Integer))
 
    Dim pPoint As IPoint = New PointClass
    pPoint.PutCoords(135.0, 35.0)   '緯度経度の設定
    pPoint.SpatialReference = CType(pGCS_JGD2000, ISpatialReference)    '空間参照の定義（GCS_JGD2000）
    pPoint.Project(CType(pPCS_UTMZone54_JGD2000, ISpatialReference))    '投影変換（JGD2000 UTM Zone54に換算）
 
    ShowMessage(pPoint.X.ToString + " " + pPoint.Y.ToString)            '換算後の座標値の取得
End Sub