Coordinate

Calculate centreline chainages and coordinates.

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Command

Shortcut Key

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RD_HORCOORDINATE

 

 

This functin allows you to coordinate the chainage points along the alignment, and produce a simple listing of the coordinates.

To run this option, an alignment defined by PI points and curve details must already exist. The start and end chainage for the calculation must be specified. The default values are calculated from the entered alignment but you are free to specify your own range.

If a road database has not been created for the current road, or if there is a database but it has no chainages, then chainage intervals must be specified for both straights and curves. Chainages at the specified interval are then inserted into the roads database, along with the calculated coordinates.

If the road database already exists, you have the option of using the road index (See the section on the road index). Each chainage record in the index has new coordinates calculated.

Make sure the Output window is open to see the listing on the screen.

Procedure

  1. The Coordination Details display.

  1. Fill in the relevant data and click OK to continue.

  2. If the Chainages from index checkbox was not selected, the following message displays.

Click Yes to replace any existing road database; or No to cancel the function.

  1. The following displays in the Output window.

  1. If the Spreadsheet output checkbox was selected, the save window displays so you can select a file to write to. The drive and path automatically default to the last used drive and directory for this type of file. The data format is as follows:

0,76205.123,21117.174

5,76200.238,21118.241

10,76195.353,21119.308

15,76190.468,21120.376

20,76185.583,21121.443

25,76180.699,21122.510

30,76175.814,21123.577

35,76170.929,21124.644

40,76166.044,21125.711

45,76161.159,21126.778

50,76156.274,21127.845

55,76151.390,21128.912

60,76146.505,21129.979

65,76141.620,21131.046

70,76136.735,21132.113

75,76131.850,21133.180

80,76126.966,21134.247

85,76122.081,21135.314

90,76117.196,21136.382

95,76112.311,21137.449

100,76107.426,21138.516