Loading image file as background image

You can insert a true to scale digital map as a background image for a detailed Vissim network model. Only insert graphic files, which make up the entire examination area. You load the graphic file of the digital map as the background image in Vissim and display it in a Network Editor. The load time is dependent upon the file size.

Load the graphics in file formats which are suitable for graphics, for example, *.bmp or *.wmf. If a file format cannot be loaded, a message is displayed.

For georeferenced graphic files with Sphere Mercator projection: When loading the graphic file, you can choose whether or not you want Vissim to account for the size and/or position information of the image.

Vissim does not use map projection. It does not consider data obtained through map projection, as could be included in files created with CAD software. Using a graphic file based on map projection to model the background of your Vissimnetwork may distort your length information and simulation results. Before loading a graphic file in Vissimthat contains data of a map projection, in the CAD program, change the coordinate system to a metric system without projection, e.g. to AutoCAD Map 3D.

Graphic files from a CAD program may contain transparent pixels. This transparency is maintained in Vissim.

Notes:   You can specify that you need not press the Ctrl key when adding network objects (Right-click behavior and action after creating an object). For some network objects there are windows in which the attributes of a network object can be defined and edited. There are lists for this, for all network objects. You can choose whether you want to open a window, a list or neither of the two for the definition of network objects in the Network Editor (Right-click behavior and action after creating an object).

1.  On the network object sidebar, click Background Images.

2.  Hold down the Ctrl key and in the Network Editor, right-click on the desired position.

3.  On the shortcut menu, click Add new Background Image.

The window Select Bitmap File opens.

4.   Select the graphic file which should be imported.

5.  Click the Open button.

Depending on the file format and the image size and/or position stored in the file, the Add background window opens and displays several options.

• If the graphic file contains information about the size and/or position of the image and is saved in *.dwg or *.shp, the Add background window opens and displays options:

6.  When this window opens, click the desired option.

• If the graphic file contains information about the size and/or position of the image and is not saved in the file format *.dwg or *.shp, but in *.bgr or *.hgr, the Add background window opens and displays options:

7.  Click the desired entry.

8.  On the Network Editor toolbar, click the  Show entire network button.

The digital map is shown in its entirety.

The name and a miniature view of the digital map is shown in the Background images toolbar.