private string TranslateCircleRadius(string shapeWKT, SpatialUnits units)
{
var match = CircleShape.Match(shapeWKT);
if (match.Success == false)
{
return(shapeWKT);
}
var radCapture = match.Groups[3];
var radius = double.Parse(radCapture.Value, CultureInfo.InvariantCulture);
radius = TranslateCircleRadius(radius, units);
return(shapeWKT.Substring(0, radCapture.Index) + radius.ToString("F6", CultureInfo.InvariantCulture) +
shapeWKT.Substring(radCapture.Index + radCapture.Length));
}