(This functionality is available with the Profiles and Design module)
Allows long section parameters to be changed.
Note that changing any of the parameters in this dialog box will not change the parameters of any existing long sections.
Long Section Parameters Dialog Box
| Item | Used to |
| Build Profile From | |
| Model | Create Profiles from a selected model. Elevations for Profiles will be interpolated along
the face of all crossing triangle surfaces. The long section created will only be defined within the area where elevations can be extracted from the model. For instance, if the alignment starts beyond the area of a model, the long section will only commence at the edge of the model. |
| Objects | Create profiles from point object elevations. |
| Data Set | Display the name of the database that contains the model that is to be used in the profiles creation. |
| Browse | Select a database from which a model is to be used in the profiles creation. This may be the currently open database or any other SEE database. |
| Model Name | Select the name of the model in the database that has been selected to be used in the profiles creation. |
| Only use objects with elevations | Used to select all objects with elevations to be used in the long section creation. For Key Points this will be the elevation of the control line key point. For crossing breaklines this will be the elevation graded along the break line, between the two points either side of the control line. For Crossing planimetric lines this will be the elevation graded along the planimetric line, provided that the points either side of the control line both have elevations. If the Points Within Offset Range is selected, it will pick up all points that fall within the defined offset and range parameters that have elevations. |
| Insert points at objects without elevations | Select all objects along the control line that do not have elevations to be used in the long
section creation. The distance of the object along the control line will be determined and a point will be inserted into the long section. These inserted points will have their elevations determined by grading or extrapolating from the points already in the long section. Inserting these points will not change the shape of the long section. |
| Do not join long section points | Creates a "Point" profile. i.e. When the long section is created the resulting profile will
consist of points only. This option should be selected if the long sections are to incorporate points that are not necessarily part of the actual long section surface. Example: overhead power lines, underground services, etc. |
| Profile Along the Control Line | |
| Key Points | Select all key points that make up the control line. |
| Crossing Break Lines | Interpolate an elevation at the intersection points of any break lines crossing the control line. This will be an elevation graded along the break line, between the two points either side of the control line. |
| Crossing Planimetric Lines | Interpolate an elevation at the intersection points of any planimetric lines crossing the control line. This will be an elevation graded along the planimetric line, provided that the points either side of the control line both have elevations. |
| Section Markers | Determine an elevation on a primary alignment at each section marker. If the alignment is a secondary alignment the elevation will be determined along the secondary alignment at the perpendicular to the primary alignment from the section marker. NOTE 1: This check box will be disabled if "Objects" and "Only use points with elevations" are both selected. NOTE 2: When object types are selected that do not have elevations associated with them e.g. Section Markers or some Planimetric Lines, the points created along the long section at these points will be created as floating points. This is because the elevations along the long section at these points are interpolated from other points in the long section that have elevations. By marking these points as floating points it enables the position of the object to be fixed along the long section and the elevation determined by the surface terrain profile. |
| Profile Offset to the Control Line | |
| Points within Offset Range | Select points to be used in the long section creation that are to be searched for within a range of the control line, or at an offset to the control line. |
| Offset | Enter an offset from the control line that defines the centre line of the search area range for points that are to be used in the long section creation. A positive (+) offset is to the right of the control line, a negative (-) offset is to the left of the control line. |
| Range (+/-) | Enter the search range for either side of the offset. A positive non-zero number must be entered
for the range. Example: A range of 1 metre will define a search area 1 metre to the left and 1 metre to the right of the offset, for the length of the control line. |
| Fill profile hiatus by Using points close To the control line | Make the Hiatus Distance field active. |
| Hiatus Distance | Enter the Hiatus Distance. The Hiatus Distance option is used to refer back to the control line if insufficient information is found along the offset from the control line. The hiatus distance represents the largest distance allowable between points along the offset. If the distance between points exceeds the hiatus distance the system will look to the control line, using the same range value, to find points to insert into the long section. |
| Editing Behaviour | |
| Delete All | This profiles will be deleted if the Control Line beneath it changes position. |
| Delete Affected | Points in this profiles will be deleted if the Control Line changes position beneath them. |
| Scale Affected | Points in this profiles will retain their relative position along the Control Line. |
| Retain Affected | Points in this profiles will maintain there distance along the Control Line. Note that if the length of the control line changes their position on the line will change. |
| Colour | Set the colour attribute to any one of 256 colours, ranging from 0 to 255. |
| Line Style | Open the line style library dialog box. |
| OK | Close the dialog box and set the current long section parameters for any newly created profiles. |
| Cancel | Close the dialog box without applying any changes made to the long section parameters. |