Editing Network Object Geometry

The geometry of network objects can be edited either on the GeoPlan Window, the Network Object Grid Windows or the Property Window.

This topic also describes the tools available to adjust the coordinates of a selection of objects and to reverse the direction of a selection of links.

Editing Object Geometry on the GeoPlan

To edit the geometry of a network object on the GeoPlan

1. Click (Edit Geometry) on the GeoPlan Tools Toolbar to turn on Edit Geometry mode.
2. Click the object to be edited in the GeoPlan. Details on how to edit the different object types are given below.

Moving a Single Node or Asset Point

Using the Edit Geometry tool, click on the Node or Asset Point object. The object turns red to indicate that it is selected. Click the object again, hold the mouse button and move the cursor to where the object is to be moved. Release the mouse button to complete the move.

Moving a Link

The ends of a link can be moved by moving nodes attached to the link (see Moving a Single Node or Asset Point above).

Internal bends in the link can be moved by editing the link vertices (see Editing Link, Line and Polygon Vertices below).

Note:

Lateral nodes connected to a pipe that is moved may not be moved automatically. See Moving Pipes with Lateral Inflows for further details.

Editing Link, Line and Polygon Vertices

Using the Edit Geometry tool click on the Link, Line or Polygon object. The object vertices are displayed as red squares.

General l ines can be joined together or split into multiple objects. See Joining and Splitting Lines for further details.

Moving a Vertex

To move a vertex, move the cursor over the vertex to be moved. A cross will appear over the vertex when the cursor is locked on that point. Hold the left mouse button and move the mouse to drag the vertex to a new position to reshape the object. If snapping mode is switched on, when the vertex being moved becomes close to another object that it can snap to, the vertices in the adjacent object will also be highlighted. This helps position the vertex being moved more precisely.

(Moving a node attached to a link will also move the end vertex of a link.)

If two or more vertices are snapped together, the behaviour varies depending on whether snapping mode is switched on.

• with snapping mode on, all snapped vertices are moved together
• with snapping mode off, all vertices are treated as being independent. Only the vertex from the currently highlighted object will be moved.

Adding a Vertex

To add a vertex between existing vertices, press CTRL and click the left mouse button on the line at the position of the new vertex.

To extend a line by adding a vertex to the end of the line, press CTRL and click the left mouse button off the line at the position of the new vertex. A new vertex will be added to the beginning or the end of the line, depending on whether the nearest vertex to the click location is the first or last existing vertex. Note that a new vertex will only be added if the click location is closer to the first/last existing vertex than any other vertex on the line.

Deleting a Vertex

To delete a vertex, move the cursor over the vertex to be deleted. A cross will appear over the vertex when the cursor is locked on that point. Hold ALT and click the left mouse button.

Snapping Polygon Vertices

The vertices of different polygon objects can be snapped together. Once the objects are snapped, the shared vertices can be moved as if they are a single vertex, as long as snapping mode is switched on.

To snap vertices together, ensure snapping mode is switched on, move the cursor over the vertex to be moved. A cross will appear over the vertex when the cursor is locked on that point. Hold the left mouse button and move the mouse to drag the vertex. When close enough to another object, the vertices on the other object will also be highlighted. When close enough to snap the points together, a dotted cross will be displayed on the vertex being moved towards. Release the mouse button to snap the two points together.

To unsnap vertices, simply switch off snapping mode. With snapping mode off, all vertices are treated as being independent, even if they share the same location. When moving or deleting a vertex, only the vertex currently highlighted will be edited.

Snapping Pipe Bends to Nodes

An intermediate bend (vertex) in a pipe can be snapped to a node. The node can either be inserted into the pipe or added as a lateral node. See Snapping Pipe Bends to Nodes for details.

Editing Object Geometry on the Network Grid Window or Property Window

X and Y coordinates for nodes can be edited by typing or pasting new values into the grid or property sheet.

The grid data manipulation tools - Adjust Cell Value and Set New Cell Value -may also be used to adjust coordinates for a group of nodes. See Editing Data in the Network Object Grid Window for more information.

Reversing Selected Links

To reverse the direction of a selection of links

1. Select the links to be reversed.
2. From the Selection menu, choose Selection operations Reverse Links or click (Link Reversal) on the Selection Toolbar.

The operation only switches the upstream and downstream nodes. It makes no other changes to the link.

This tool is particularly useful if you are having problems using the Network Trace or the Pipe Direction Trace tools to trace the route to an outfall.

Moving Selected Objects

To move a selection of network objects

1. Select the objects to be moved.
2. From the Selection menu, choose Selection operationsGeographically adjust selection.
3. The Geographical Adjustment of Selection dialog is displayed. The scale for the X or Y co-ordinates of the object can be changed or the items can be moved relative to their current position.

Alternatively:

1. Select the objects to be moved.
2. Click (Move Selection) on the More GeoPlan Tools Toolbar (keyboard shortcut CTRL+F8).
3. Left-click on the GeoPlan and holding the mouse button, drag the current selection of objects to a new location. Release the mouse button to drop the objects at the new location.

For both methods above: when a node is moved, the positions of any pipes attached to the node are also updated.

Note: The only position information held for pipes is the position of any intermediate points. The position of the pipe ends is defined by the attached nodes. If attached nodes are not selected with a pipe, only the intermediate points (if any) will be moved. The position of the nodes will remain unchanged.