public void AddValue(object key, float merit)
{
try
{
SuspendImage();
Items.AddOneTick();
SetLastValue(key, merit);
}
finally
{
ResumeImage();
}
}
/// <summary>
/// Adds a new tick to the end of all categories, initializes the new tick values with NaN, and returns the index of the new tick.
/// </summary>
/// <returns>The index of the new tick.</returns>
public void AddOneTick()
{
Items.AddOneTick();
RefreshImage();
}