[PRO] set out points with respect to an alignment - MDT25

16.11 [PRO] Set-out Points with Respect to an Alignment

When this command is selected, the program requests the horizontal alignment, which can be selected on screen or its file selected. If a segment is selected, the program will take the information from the segment's horizontal alignment. The following dialog box is then displayed, which is described further below:

Control Points: Setting out stations that will be used to perform the calculation. Control Point 1 represents the positioning control point and Control Point 2 represents the reference control point. Their names can either be keyed in or selected on screen.

Method: Types of setting out methods that can be used, either Polar or Bisection. The bisection method has different options: Reciprocal Zero and As per Coordinates.

Once the dialog box has been validated, the points to be set out (see Select Point) are selected. When these are selected, the different lists appearing below are displayed depending on the method selected.

Setting out by Polar Method

The station and the point's offset in relation to the horizontal alignment, its coordinates, the distance and azimuth to the positioning control point, and the point number are displayed for each point selected. If any of the points cannot be projected on the horizontal alignment, it will not be included in the list.

Setting out by Bisection Method

For each point selected, the station and the point's offset in relation to the horizontal alignment, its coordinates, the distance and azimuth to the base and reference control points, and the point number are displayed. If any of the points cannot be projected on the horizontal alignment, it will not be included in the list.

The possibility exists for all the different lists of exporting and printing the data obtained. A description of each of the options follows:

Export

When the Export option is selected, the program displays a new dialog box containing the different ways of exporting the data. The dialog box and a description of its characteristics appear below:

Points file: All the coordinates of all the points on the list are exported to a points file. When the dialog box is validated, the Export Points command is automatically executed. For further details, see the Points section.

Text file: Sends the contents of the list to an ASCII file, so that it can be edited or handled with a word processor.