Creating features

Using the Create data bar, you can create features in the specified class by digitising a geometry of the required type: a point, line, polygon, or a circle defined by three points on its circumference. You can also:

Click Icon-show_classes.jpg to select the feature class you want to use to create data. The most recently used selection appears at the top of the list.

Click Icon-pin.jpg to pin or unpin the menu to the screen, keeping it visible when working in the map. Click Icon-repeat.jpg to toggle repeat mode on or off. With repeat mode enabled, as you create one feature you can immediately create another of the same class and geometry type without having to select them from this bar again.

When you select a geometry type in the Create data bar, you can start digitising and additional options in the Context bar are displayed.

To create a secondary geometry, click on the primary geometry to bring up the feature selection list and click on the unset secondary geometry in the list. This allows you to then digitise the new secondary geometry for the selected feature.

To abandon an operation, click Icon-abandon.jpg in the Context bar.

The following operations are available in the Create data bar:

Point_line_polygon_circle.jpg

Use these icons to digitise a point, line, polygon, or circle. UseIcon-show_classes.jpgto select a feature class then click the appropriate icon to start digitising. Depending on the type of feature you are digitising, additional options are displayed in the Context bar.

Create Hole

Remove a defined region of a polygon.

To create a hole:

  1. Select an existing polygon.

  2. Click Icon-create_hole.jpg and digitise a hole.

  3. Double-click or select Icon-confirm.jpgto confirm your changes. The polygon is removed from the feature and a hole is created.

It is often easier to use another feature to punch a hole in a polygon by selecting the polygon and using the Punch operation.

Create From Union

Create a new feature of a specified class from two or more features that touch or intersect, or create a new feature based on a single feature.

To create a union of features:

  1. Select a feature. If you are creating a union from more than one feature, ensure Multi Select is enabled and select the features. (For more information about selecting multiple features, see Selecting_multiple_features.) Alternatively, use Ctrl+click to multi-select features.

  2. Select a class for the new feature from the Create data bar.

  3. Click Icon-create_from_union.jpg

A new feature with the selected class is created on top of the existing feature(s) and any existing features remain in the layer below.

Creating non-geometric features

If you have a class in your data that has no geometry but is made up of references to other member features, select the member features, select the class of the group feature, and click Icon-create_from_union.jpg to create the feature. You can select the group feature by selecting one of the members and navigating the 'composes' property back to the group feature, or by running a search on the group class.

Point along line

Add a single point on or in line with an existing line or defined vector. As you add points, the tie out distance (distance remaining to the end point) is automatically calculated and displayed in the panel.

To add a point to a line:

  1. Select the line along which you want to add a point.

  2. Using the Create data bar, select a class for the point.

  3. Click Icon-point_along_line.jpg

  4. Select the end of the line from which distances will be measured.

  5. Enter the distance along the line to place the point and a height for the point. Click Accept.

If the distance specified for the distance is negative, the point is placed on the backward projection of the line’s first segment. If the distance is greater than the length of the line, the point is created on the projection of the line’s last segment.

The point is created at the specified distance along the line.

To add a point on a defined vector:

  1. Using the Create data bar, select a class for the point.

  2. Click the Point along line icon.

  3. Click the map to indicate the start of the vector along which you want to add the point.

  4. Click the map to indicate the end of the vector.

  5. Enter the distance along the vector to place the point and a height for the point. Click Accept.

If the distance specified for the distance is negative, the point is placed on the backward projection of the vector. If the distance is greater than the length of the line, the point is created on the forward projection of the vector.

The point is created at the specified distance along the vector.

Chainage and offset

Add multiple points relative to a line or defined vector. Points are created at a specified distance along the line or vector at a specified perpendicular offset and height. As you add points, the tie out distance (distance remaining to the end point) is automatically calculated and displayed in the panel.

To add one or more points on a vector:

  1. Select the vector to use as a relative location for the points or digitise a vector.

  2. Select a class for the points.

  3. From the Create data bar, click Icon-chainage_and_offset.jpg The Chainage and Offset panel is displayed:

Chainage_and_offset_-_entry.jpg

  1. Select the end of the line where you want the series of points to begin.

  2. Enter the height for the first point in the Height field. The last value entered in the Height field can be reused for additional points.

If the number specified for the distance is negative, the point is placed on the backward projection of the line’s first segment. If the distance is greater than the length of the line, the point is created on the projection of the line’s last segment.

  1. Enter a value in the Offset field(s). A value in the left-hand Offset field creates a point to the left of the line, and a value in the right-hand Offset field creates a point to the right of the line.

  2. Enter a distance in the Distance field.

  3. Click Icon-confirm_page.jpg to add the point.

  4. Repeat steps 5-8 to place additional points on the map. The most recent point added is displayed at the bottom of the list.

  5. To edit an existing point, select it from the list then enter new values.

To continue adding new points after editing an existing point, click Icon-add.jpg

  1. To delete a point, select it from the list and click Icon-delete.jpg
  2. To finish adding points, click Accept or to discard your changes or click Abandon to cancel the operation.

Prorating distances

Prorating allows you to match calculations taken on the ground to the map, compensating for any differences in calculations.

To prorate distances:

  1. In the Chainage and Offset panel, click Prorate.
  2. Enter the distance to the end of the line as measured on the ground in the Observed Tie Out Distance field.

  3. In the Tolerance Warning field, enter the distance a point can deviate from the map point before a warning is displayed.

  4. Click Preview. If no warnings are displayed, the map is updated to show the new distances. Click Accept to confirm changes or Cancel to abandon changes.

Points at intervals

Create points at defined intervals along an existing line or a user-specified vector. If a line is already selected, it will use this line. Otherwise, the start and end of the vector must be specified.

To add points to a line:

  1. Select the line along which you want to create points.

  2. Using the Create data bar, select a class for the point.

  3. Click Icon-points_at_intervals.jpg

  4. Click on the map to indicate the start of the line, where the series of points will begin.

  5. Enter the distance between intervals and a height for the points. Click Accept.

Points are created, starting at 0, at each interval along the length of the line or arc.

To add points on a defined vector when there is no existing line:

  1. Using the Create data bar, select a class for the point.

  2. Click Icon-points_at_intervals.jpg

  3. Click on the map to indicate the start of the vector, where the series of points will begin.

  4. Click on the map to indicate the end of the vector.

  5. Enter the distance between intervals and a height for the points. Click Accept.

Points are created, starting at 0, at each interval along the length of the vector.

Manual Traverse

Points are created relative to a baseline using distance and bearing.

To add one or more points on a vector:

  1. Using the Create data bar, select a class for the point.

  2. Click Icon-manual_traverse.jpg and select one of the following options: Create Points, Create Lines, or Create Polygon.

  3. Digitise the baseline. The Manual Traverse panel is displayed.

  4. Select Distance & Bearing to set the angle of deviation and distance or Relative Distance to enter an offset and distance in meters.

  5. To add more entries, click Icon-add.jpg To delete an entry, select it and click Icon-delete.jpg

  6. To adjust the baseline click Redefine Baseline, then click Continue and redigitise the baseline.

  7. Click Icon-confirm_page.jpg to accept any changes.