public void SelfTest()
{
var lsc = new LeastSquareCalculator();
lsc.Add(1, -1);
lsc.Add(4, 11);
lsc.Add(-1, -9);
lsc.Add(-2, -13);
Debug.Assert(lsc.Sloppe == 4);
Debug.Assert(lsc.Ordinate == -5);
}
private void ButtonCalculateSlopeAndOrdinateClick(object sender, EventArgs e)
{
Cursor = Cursors.WaitCursor;
try
{
DbReader.ExecuteNonQuery("exec TV_UpdateContainsValidTimeFlag");
_atc.Clear();
_atc.LoadFromDb();
string currentTrack = "";
string currentSurface = "";
string currentTrackDesc = "";
_projectionVariables = new List<ProjectionVariables>();
LeastSquareCalculator lsq = null;
foreach (var at in _atc)
{
if (at.TrackCode != currentTrack || at.Surface != currentSurface)
{
if (null != lsq)
{
_projectionVariables.Add(new ProjectionVariables() {TrackCode = currentTrack, Surface = currentSurface, Slope = lsq.Sloppe, Ordinate = lsq.Ordinate, TrackDesc = currentTrackDesc});
}
currentTrack = at.TrackCode;
currentSurface = at.Surface;
currentTrackDesc = at.TrackDesc;
lsq = new LeastSquareCalculator();
}
lsq.Add(at.Distance, at.FinalTime);
}
if (null != lsq)
{
_projectionVariables.Add(new ProjectionVariables() {TrackCode = currentTrack, Surface = currentSurface, Slope = lsq.Sloppe, Ordinate = lsq.Ordinate, TrackDesc = currentTrackDesc});
}
_gridProjectionVariables.DataSource = _projectionVariables;
}
catch (Exception exception)
{
MessageBox.Show(exception.Message);
}
finally
{
Cursor = Cursors.Default;
}
}