Data Type: Spatial Graph ()

Description:

Conceptually, the data type is organized as a graph, where the vertices of the graph, represtented as branching or endpoints of the network, are called Nodes, while the edges of the graph are modeled as curved lines of particular length connecting the nodes and are called Segments. The 3 dimensional course of a segment is given by a sequence of Points in 3D space. as curved lines in 3D space and that may be organized in networks of multiple such lines.

Branching or endpoints of the network are called Nodes, the curved lines (arcs) connecting nodes are called Segments. The three dimensional course of a segment is given by a sequence of Points in 3D space. A set of segments connected by nodes will be termed a graph, and a Spatial Graph data object can store several graphs.

For each segment, node, and point one or more scalar data items can be stored. Nodes and segments can, in addition, be annotated with labels. Labels may be grouped in label groups, so that a set of several labels can be used to tag structures that are conceptually connected. In order to visualize the network of a Spatial Graph object the module Spatial Graph View can be used. Spatial Graph objects can be stored using the data file format.

A spreadsheet displaying the information which can be found in the Spatial Graph is accessible using the Table port. Three tables are displayed, one for each graph elements: Nodes, Points and Segments. The Nodes and Points tables are composed of the nodes/points ID, the nodes/points attributes, and their 3D coordinates. The Nodes table also contains the coordination number (number of nodes connected to each node). The Segments table is composed of the segments ID, the segments attributes, the segments source ID, the segments target ID, and the list of the points ID composing the segments. This spreadsheet can be exported in Microsoft XML SpreadSheet 2003 format, using the Export as... button.

Ports:

Table

The Show button allows displaying the spreadsheet containing all the stored information on the Spatial Graph in the Tables panel.

The Export as... button allows exporting the spreadsheet in Microsoft XML SpreadSheet 2003 format.

Commands:

merge <spatialgraph2>
Merges spatialgraph2 into the spatial graph.

deleteAttribute <name>
Delete attribute, including labels.

exportXML <filename>
Export data into an XML file.

selectInSpreadSheet <tableId> {<rowId> <colId>} [{<rowId> <colId>} ..]
Select in a table from associated spreadsheet some cells.