Cross Section
If you define a line on the map on the screen by entering its first and last points, you can view a section along this line in an additional window. This section shows the height of the terrain as well as the cross sections through any three-dimensional objects encountered, e.g. buildings and barriers.
The sources can also be displayed in the cross section.
To insert a line on the map, activate any toolbox icon for a line-like object, such as an auxiliary polygon, and enter the first and last points. Then switch to the Edit Mode and click the line with the right mouse button. This opens the context menu (see manual "Introduction to CadnaA") where you select the Cross Section command.
Source
In the cross section all sources cut by the section line are also displayed if the checkbox Source is activated.
Ray
The path of a ray from the initial to the end point - how it is considered in the calculation by the program - can be displayed by activating the corresponding option.
Z-Factor
The z-coordinates in the sectional view are multiplied by the value of the Z-factor to enlarge arbitrarily and, therefore, to clarify the difference in the height.
Copy/Print
With the „Copy“ button you can copy the sectional view in the clipboard and with the „Print“ button you can print it out.
In the cross section you can also calculate a vertical grid (see Vertical Grid).
Note
Inserting an image of a cross section from the clipboard to the 2d graphics with the right scale: The sectional drawing includes in its width a margin of 3 mm for each side. In case this picture shall again be inserted, according to scale, via the clipboard, the total 6 mm margin has to be taken into account in the length of the object Symbol. The contents of the clipboard are inserted as symbol (see Symbol). In the edit dialog of the symbol take into account the 6 mm margin as follows:
- Activate the option Maintain Aspect Ratio
- Enter the corresponding length plus the margin in meters
\(\frac{6mm}{1000}*\text{Scale} = \text{Meter}\)