for map lists,
for raster maps,
for polygon maps,
for segment maps,
for point maps,
for tables.
When the ILWIS icon is double-clicked on the desktop, the ILWIS logo appears, followed by the ILWIS Main window.
Main window:
Just below the menu bar you see a line in which text appears as soon as you click a map or menu command. This is the command line, on which you can type for example MapCalc statements. Below the command line is a toolbar which allows you to quickly display maps or tables. If you want to change to another directory or drive you can use the navigator: the list boxes to the right of the toolbar.
The central right part of the Main window is the Catalog. It displays the ILWIS objects in the current directory. All ILWIS objects are preceded by an icon. The icons preceding data objects are:
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for map lists, |
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for raster maps, |
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for polygon maps, |
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for segment maps, |
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for point maps, |
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for tables. |
To see more objects in the Catalog than only data objects, see How to customize the Catalog.
For a list of all ILWIS objects and their icons, see ILWIS objects. For short Help on an object in the Catalog, click an object with the right mouse button and choose Help from the context-sensitive menu.
Below the Catalog, you find a scroll bar which you can use to view more objects of the current directory in the Catalog.
Lists of all operations can be found in the Operation-tree and the Operation-list, by default located on the first two tabs at the left hand side of the Main window. The operations are preceded by an icon.
At the bottom of the Main window you see the status bar which gives additional information on maps, tables, operations, etc. The Main window can be sized by dragging its borders.
Displaying maps and tables:
There are several ways to open a map or table in a window:
Other ways to display maps and tables are by using the toolbar, the context-sensitive menu under the right mouse button when the mouse pointer is positioned on a map or table, or by double-clicking the Show item in the Operation-tree or the Operation-list. When opening a map, a dialog box appears in which you can specify some display options for the map.
A map is displayed in a map window. You can open as many map windows as you like. A map window can display one or more rasters, polygon maps, segment maps, and/or point maps; a map list as a color composite with additional vector maps; and furthermore, optional grid lines, graticules and annotation text layers. You can zoom in and zoom out, and if the map does not fit in the map window, you can pan or scroll.
You can add other maps to an existing map window, either by dragging the desired map(s) from the Catalog to the existing map window, or by using the Add Layer command on the Layers menu of the map window. To see the value or meaning of a pixel, point, segment, or polygon of displayed maps in a map window, you can press the left mouse button (info). When the displayed map has an attribute table, you can double-click in the map window to see and edit the attributes.
You can use Layer Management pane for instance to add or to remove layers from a map window, to change the order of layers or to change display options of a layer.
Multiple maps, grid lines, graticules, etc. displayed in a map window can be saved as a map view. You can add one or more map views to a layout, to which you can then add further annotation.
A table is displayed in a table window. You can open as many table windows as you like. Each table window displays one table. A table can be shown as a whole, or record by record. When the table does not fit in the table window, you can scroll. Fields in a table can be edited by clicking them. The width of a column and the order of columns can easily be changed. From a table window, you can create graphs in a graph window.
Pixel info:
In the pixel information window you can get information on multiple maps and attribute tables which contain attribute data. Open the pixel information window through the command Open Pixel Info on the File menu of the Main or a map window. Add one or more maps to the pixel info window by using the File menu of the pixel info window, or drag map icons from the Catalog to the pixel information window.
Starting ILWIS operations:
ILWIS operations, such as Distance calculation or Filter, are listed in the Operation-tree and the Operation-list. There are five ways to start an ILWIS operation:
Usually a dialog box is opened in which you can select input and output object names and where you can set some parameters necessary for the operation.
To obtain short Help on an operation in the Operation-tree or the Operation-list, click an operation with the right mouse button and choose Help from the context-sensitive menu.
Command lines:
Map calculation formulae can be typed on the command line of the Main window, table calculation formulae can be typed on the command line of a table window. These command lines can also be used as a pocket line calculator. The command line of the Main window can also be used to type ILWIS commands, ILWIS expressions, or to run a script.
See also: