Once a drawing has been imported, the software estimates the required area for analysis, and sets an overall scale. It is advisable to review these before conducting an analysis. To do this:

• Open the ‘Drawing and Setup menu’.
• Select ‘Edit Scan Settings’, followed by the ‘Select Scan Regions’ option.
• The view should update to show the areas selected for analysis in magenta.
• New areas can be added, or selected areas removed, by clicking with the cursor on the drawing.
• Once all required regions are set, the preview can be closed by clicking on any other menu option.

To review and set the drawing scale:

• Open the ‘Drawing and Setup menu’.
• Select ‘Edit Scan Settings’, followed by the ‘Set Unit Scale’ option.
• The view should update to show a scale bar in magenta, and a blue slider should appear in the menu.
• Moving the slider will increase or decrease the scale bar size to a user defined ‘ten unit’ length. This provides a uniform unit length that is applied to all isovist calculations (area, vista, and so forth).
• To assist with accurate scaling, the user can reposition the origin point of the scale bar by clicking on the screen, and can zoom in and out of the drawing using the mouse scroll wheel.
• Once the required scale is set, the scale preview can be closed by clicking on any other menu option.