VISSIM 5.30-05 User Manual

Background Images
1. Go to VIEW - BACKGROUND - EDIT..., press LOAD... and select the name of
the desired graphics file in order to import it into VISSIM. This process
may take a few moments for large image files.
Although it is possible to select many different file
types, VISSIM does not necessarily support all the
selectable file types. If a file type is not supported,
VISSIM shows a message box.
2. Close the Background selection window and select SHOW ENTIRE
NETWORK from the Navigation toolbar to display the entire map.
Be aware that the map is not displayed to scale, even if the image file
has an intrinsic scale. Precise scaling is necessary for an accurate
network model, therefore we strongly recommend to use large scale
distances (> 100 m / > 300 ft). To fit the map to VISSIM units, zoom in to
an object or distance between two objects where you know the original
distance precisely. For example, this could be a map scale or the
distance between two building edges or geographic points.
3. Open again the Background selection window (VIEW - BACKGROUND -
EDIT...), select the file to be scaled and press SCALE. The mouse pointer
turns into a ruler with the upper left corner as the “hot spot”.
4. Click and hold the left mouse button and drag the mouse along the scale
distance.
5. After releasing the left mouse button, enter the real distance of the scale
line and confirm with Ok.
The scale of a VISSIM network cannot be changed later on. Therefore we
strongly recommend to use great precision in the scaling process to avoid
inconsistencies.
6. While the Background Selection window is still open, press ORIGIN in
order to move the background image to the desired position. The mouse
pointer turns into a hand with its thumbnail acting as the “hot spot”. Keep
the left mouse button pressed to drag the background map to its new
location. Typically, moving the background is not necessary for the first
bitmap as long as it does not have to fit an existing VISSIM network.
7. Go to VIEW - BACKGROUND - PARAMETERS... and press SAVE in order to
permanently store the scaling and origin information of the background
image. This command creates a parameter file named .BGR. Whenever you reload that background, make sure that the
corresponding *.BGR file is located in the same directory as the background
file. In case the *.BGR file is missing, VISSIM will read data from
the *.HGR file and save changes to the newly created *.BGR file.
User Manual © PTV AG 2011 101