VISSIM 5.30-05 User Manual

6.7.2.4 Editing
Signal Controllers
different values for α, one for increasing x values (used if x is greater than
s(t-1)) and one for decreasing x values (used if x is smaller than s(t-1)).
This means that the exponentially smoothed occupancy rate is a kind of a
floating average of the detected values from all time steps before, with the
most current ones having the highest weight. A general rule is that with a
smoothing factor of 1/n most of the result originates from the last 2*n values,
e.g. with α = 0.25 the last 8 detected values account for most of the
smoothed value. If you do not want your values to be smoothed you can set
α to 1 and the equation will give you only the newly detected value x.
To access the detector properties for data editing (cf. section 6.7.2.2), there
are two ways:
► Select the link/connector in the network display and double-click on the
detector.
► Alternatively, you may right-click outside of the network to call the list of
detectors. For each detector, the list contains the SC no., the detector
no. and the name of the detector. Select the detector in the list and click
the DATA button.
By dragging the detector while keeping the left mouse-button pressed, you
can do the following:
► Move the detector either within its link/connector or into another link or
connector.
► Delete the detector by dragging it outside of any link/connector.
6.7.3 Signal Control Types
The Signal control window contains the list of all signal controllers defined in
the current network. This list can be edited.
► For the SC selected in the list you can edit the header data in the upper
section of the window.
► By right-click in the list you can call a context menu. The context menu
provides the following functions:
- NEW adds another SC to the list
- DUPLICATE creates a new SC with the properties of the selected one
but a new SC no. = maximum SC no. + 1
- DELETE removes the selected entry from the list
User Manual © PTV AG 2011 289