Scaling the background image

A loaded background image is not represented according to scale even when the file has a scale. For the precise modeling of a network, you must scale the map precisely. Use a large distance, for example > 100 m. For the adjustment of the background image and the Vissim units, zoom in on an object or a link with original measurements known to you. For example, this can be the scale of the map or the edge between two corners of a building or geographical points.

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

2.  In the Network Editor, click on the background image of your choice.

A background image is marked.

3.  Right-click in the Network editor.

4.  On the shortcut menu, click Set Scale.

The mouse pointer becomes a cross.

5.  Click on the desired starting point of the edge and drag it while holding down the mouse button to the desired end point of the edge.

6.  Release the mouse button.

The Scale window opens.

7.  Enter the original length of the edge.

8.  Confirm with OK.

Tip: Alternatively, you can point the cursor to a corner of the background in the network editor and hold the mouse button down and drag to reduce or increase the background to the desired size.