Calculation: Change in height of tide -> Error

[rgleason]

Calculation: Change in height of tide -> Error

[Rasbats]

this->m_ShortDesc.Add(("Change in height of Tide"));
this->m_LongDesc.Add(("Height is total change in tide height between high and low. The time ratio is time elapsed from the previous tide divided by the time difference between the two tides. (Similar to rule of 12)"));
this->m_Category.Add(("Navigation"));
this->m_Source.Add(("Not very accurate - use official publications")); // LINK WAS BROKEN
this->m_Formula.Add(_("Change_in_height_of_Tide = (height/2) * (1-cos(dtr*180 * time_ratio))"));

[rgleason]

So the dropdown with the "-" is what is left of the http:// reference.

Maybe we should show in a popup box an example for the entry?

IE: Example: (Time since last tide)/(Time between tides) = Enter 2.3/5.25