ILWIS objects

Graphs

A graph can be created from columns in a table.

You can either create a so-called graph from columns (displayed as points, bars, line, step or needle), or a rose diagram. The graph will be shown in a graph window.

After you displayed a graph from columns, you can add graphs from formula, a least squares fit, or a semi-variogram model. The graphs are shown in the graph window. The different graph layers will furthermore appear in the Graph Management pane.

For more information on a graph window and on types of graphs, refer to Graph window : functionality and Graph window : examples of graphs.

A saved graph contains all necessary display options to redisplay the graph after the graph window has been closed.

Names of graphs:

In ILWIS 3, object names comply with Windows long file names. Also Universal Naming Convention (UNC) paths are supported. For more information, see How to use long object names.

To create a new graph:

To obtain a graph window containing a new graph:

open the table which contains the column(s) from which you wish to create a graph,
choose Create Graph or Create Rose Diagram from the File menu in the table window.

The Create Graph dialog box or the Create Rose Diagram dialog box will be opened. After you selected the column(s), a new graph window will be opened.

To create a graph, you can also:

click the Graph button in the toolbar of a table window,
use the New Graph command in the Operation-tree or the Operation-list, or
click a table with the right mouse button in a Catalog, and choose the Create Graph or the Create Rose Diagram command from the context-sensitive menu.

The graph will be shown in a Graph window.

To edit a graph:

In the Catalog, double-click a graph,
select a graph in the Catalog, open the Edit menu in the Main window and choose Edit Object, or
in the Catalog, click a graph with the right mouse button, and select Open from the context-sensitive menu.

The graph will be opened in a Graph window.

You can also open existing graphs from within a graph window.

In a graph window, you can add graph layers, show/hide graph layers, remove graph layers, change the appearance of a graph layer (Graph Options), adapt the axes of the graph, etc. The final graph can be saved; you can furthermore print the graph, copy it to the clipboard, etc. For more information, refer to Graph window : functionality and Graph window : Graph Management.

Technical information:

Graphs consist of an ASCII object definition file (.GRH). This file contains references to the table(s) that contain the columns from which the graph was created. Furthermore, it stores among others the display settings of the graphs layers and the display settings and domains used by the axes.

By opening the properties of a graph, you can see on the Contains tab, the table name(s) that contain the columns from which the graph was constructed. For more information, see the Graph Properties sheet.