Traffic Capacity
Function presentation
This window displays the capacity values for the selected date and reference location.
Data retrieved by this query are extracted from the ETFMS Environment database.
Opening the window
From the Application / ATFCM menu, select the option Environment / Traffic Capacity.
A new empty Traffic Capacity window will be opened with the following defaults :
- Observed period : current or last queried traffic date is proposed
(relative to current UTC date) depending on selected user preference
(CHMI / ATFCM application / General / Dates and times / Default date proposed for query).
- Where : last reference location type used with this query.
This selection is based on the system property
CHMI / ATFCM application / Environment / Capacity value / Last Used Capacity type.
- Is : based on the "Where" selection, the drop-down box will propose
the most recent query data elements you have queried before with success.
When Aerodrome or Aerodrome Set is selected, the related category controls are proposed.
Global button comes preselected.
On initial display, the focus is set on the first mandatory query control
with no default value: the Is input control.
Preparing to query
The date of the Observed Period may be adjusted to one of the proposed values.
Common ATFCM Tactical / Pre-Tactical dates behaviour is implemented.
The Where parameter may be adjusted to one of the following reference location types :
- Traffic Volume
- Airspace
- Aerodrome
- Aerodrome Set
- Point
The identifier corresponding to the selected Where shall be keyed
in the associated Is entry box
or selected from the drop-down list when a previous query was successful.
When Aerodrome or Aerodrome Set is selected, the related category (Cat) must be checked :
- Global (Glob)
- Departure (Dep)
- Arrival (Arr
The Send button will send the query to the CFMU system.
This window may be closed before any query is issued.
The Reset action common functionality is implemented for this function.
All query criteria are considered for activating the Reset action.
Displaying the query results
The window title contains the following information :
- The selected reference location identifier.
- The time stamp when the information was retrieved from the CFMU system.
The header box contains the selected query criteria :
- The Observed period.
- The main Where selection criteria
(Traffic Volume, Aerodrome or Set with the associated Category, Airspace, Point).
- The identifier corresponding to the selected "Where" reference (Is)
with the additional criteria (Category), if any.
On query results display, the focus is set on the Capacity graph after selecting the first period in the graph.
The graph contains a series of linked horizontal lines representing the capacity expressed as a number of flights per hour.
The colour of the capacity lines is identified by the user adjustable preference
CHMI / ATFCM application / General / Graph / Capacity colour.
The vertical axis indicates the number of flights.
The horizontal axis indicates the time periods.
User interactions
This window allows to modify a previous query selection and to issue a new request.
On query modification, the Reset action is enabled.
To display / hide the query part, click respectively the Down / Up arrow on the left underneath the split bar.
To update the display, click on the Send button on the button bar
or select the Action / Send menu option.
This will issue exactly the same query to obtain an up to date list.
To print the Traffic Capacity, first retrieve the data in the window.
Adjust possibly the displayed period, scale and other details.
When ready, click on the Print button
or select the File / Print menu option.
To export the retrieved Capacity details, click on the Export button
or select the Action / Export menu option.
Increasing / reducing the window height and width will impact the size of the graph control.
Clicking on a bar puts the focus on the graph and sets the bar as selected item.
When the focus is on the graph, the left and right arrows on the keyboard moves selection from one bar to the other.
The right mouse button pops up a contextual menu for the selected bar.
The bottom scroll bar within the graph pane is available only
when the scope of the shown period is reduced or enlarged.
Another scroll bar may appear at the bottom of the Traffic Capacity component
when the window is too small to see all contents;
it will disappear again when all of the windows contents are visible.
A split bar separates the Query fields from the query results.
It includes on the left, a small arrow button (Up/Down) to Hide/Show the query part.
Underneath the split bar that separates the Query fields from the query results several buttons may be displayed.
When the graph presentation button on the right side of the pane is selected,
then graph related buttons appear on the left of the pane to allow the user
to adjust the following graph characteristics:
- To enlarge the scope of the vertical axis :
click on the two vertical arrows pointing to each other with an horizontal line in the middle.
- To reduce the scope of the vertical axis :
click on the two vertical arrows pointing away from each other with an horizontal line in the middle.
- To display / hide a grid on the graph :
click on the toggle button with a table representation.
- To enlarge the scope of the shown period :
click on the two horizontal arrows pointing to each other with an vertical line in the middle.
- To reduce the scope of the shown period :
click on the two horizontal arrows pointing away from each other with an vertical line in the middle.
Contextual actions
When a bar is selected on the graph,
the right mouse button pops up a contextual menu for the corresponding period.
The main popup menu displays :
- The time slice corresponding to the selected bar.
- The Hourly Capacity value for the period of the selected bar.