SELECT table_name FROM information_schema.columns WHERE column_name = 'satellite_group_id';
Monday, April 23, 2012
If you want to get a list of all the tables in a DB that have a particular column name:
Monday, April 2, 2012
Transform non lat/long coordinate to lat/long using proj.net
This took me some time. I eventually found something online close and created this method. The inputs are authority and the native point to be transformed. The authority is the string that you would use in a program like cs2cs.exe to make a transform.
Proj.net
private static double[] TransformCoordToLatLong(string authority, double[] fromPoint)
{
// The authority type needs to be proj4, and we will be turning the coordinate into lat/long (WGS84)
string authType = "proj4";
string WGS84WKT = "GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\"," +
"6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY[\"EPSG\",\"6326" +
"\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\"," +
"0.01745329251994328, AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"4326\"]]";
SpatialReferenceTransformation srt = new SpatialReferenceTransformation();
SR.AuthorityTransformationResult[] transformations;
transformations = srt.TransformToKnownAuthorities(authType, authority, null);
transformations = srt.AddLocalTransformation(transformations);
ICoordinateSystem pcs_New = CoordinateSystemWktReader.Parse(transformations[0].AuthorityText) as ICoordinateSystem;
ICoordinateSystem pcs_wgs84 = CoordinateSystemWktReader.Parse(WGS84WKT) as ICoordinateSystem;
CoordinateSystemFactory csFactory = new ProjNet.CoordinateSystems.CoordinateSystemFactory();
CoordinateTransformationFactory ctFactory = new CoordinateTransformationFactory();
ICoordinateSystem sourceCS = csFactory.CreateFromWkt(transformations[0].AuthorityText);
ICoordinateSystem targetCS = csFactory.CreateFromWkt(WGS84WKT);
ICoordinateTransformation transformer = ctFactory.CreateFromCoordinateSystems(pcs_New, pcs_wgs84);
double[] toPoint = transformer.MathTransform.Transform(fromPoint);
return toPoint;
}
Proj.net
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