Map layers management
Map layers management is provided by layer manage panel's opportunities. This panel includes all layers in the current project. It allows to control layer's visibility, view legends, and manage layer attributes.


Layer management panel

Layer manage panel
Fig.1
A,A1 - Layer information panels. If the layer is active, the color of information panel is dark grey.
To make layer active click the left mouse button on it's information panel.
Double left click on the layer information panel brings up the Manage layer dialog.
1 - Expand\Hide legend button. This button expandes or hides layer's legend panel.
2 - Layer visibility checkbox. The layer can be shown by checking off the box before the layer name and be hidden by unchecking the box.
3 - Layer name area displays layer name.
B - Layer legend panel. Panel contains information about the symbols on the layer and what they mean. Double left click on the layer legend panel brings up the Manage layer dialog.
C - Options bar.
4 - Expand all legends button expands legends for all layers in projrct.
5 - Hide all legends button hides legends for all layers in projrct.
6 - Make all visible button makes all layers visible in project.
7 - Hide all button hides all layers in project.

Manage layer dialog

Layer manager dialog
Fig.2
Layer manager is used for managing layer attributes and editting layer legend.

A - Information area. This area displays custom information about layer.
1 - Layer name.
2 - Layer type.
3 - Layer annotation displays layer annotation if it exists.
B - Edit layer legend button calls Legend editor dialog.
C - Rename layer button calls input dialog (4) for new layer name. The maximum length of layer name is 50 characters.
D - Delete layer button deletes layer from project after user's confirmation.
E - Edit layer annotation button calls input dialog (5) for entering layer annotation.The maximum length of annotations is 250 characters.

Fig.3

Legend editor dialog

The Legend editor is a complex dialog which provides access to almost all capabilities to classify and modify the display of layer features. A graphic shape is a combination of a geometric shape and a symbol, which records the visual features of the shape, such as its colors, line styles, and so on. Determining how the shape will display is the role of the Legend editor. The Legend editor can make this determination based on the values of one or more attributes of each feature. In this manner GIS module can show data on a map.

The Legend editor interface differs depending on layer type.
Legend editor for linear layeres

Legend editor for linear layers
Fig.4
1 - DefLine Color determines line color. Double click on rectangle area calls Color choose dialog.
2 - Line type determines line type. Line type is set by two numbers: line part length and space length in pixels.
E.g.,:
Line type example
3 - Line width determines line width in pixels. Minimum value is 1px, maximum value is 5px.
4 - Opaque. Determines layer opaque.
OK button. This button applies legend editions and close Legend editor.
Cancel button. This button cancels legend editions and close Legend editor.
Legend editor for polygonal layeres

Legend editor for polygonal layers
Fig.5
A - General tab. This tab is used for determining default display settings for polygonal object.
1 - DefLine Color determines default polygon border color. Double click on rectangle area calls Color choose dialog.
2 - DefFill Color determines default polygon fill color. Double click on rectangle area calls Color choose dialog.
Default colors are used for displaying objects that are not difined in Ranges tab. DefLine Color is used for all layer objects.
3 - Opaque determines layer opaque.
OK button. This button applies legend editions and close Legend editor.
Cancel button. This button cancels legend editions and close Legend editor.
B - Ranges tab. This tab is used for determining ranges display settings for polygonal object.
4 - Attribute selection. Attribute selection drop down list lets users to determine attribute for legend forming.
5 - Unique values. This check box determines ranges type. If it's checked, ranges are represented by unique values, otherwise they are represented by interval.
Legend ranges are represented by tabel with columns:
6 - Color determines suitable color.
7 - Value determines interval or unique range of values.
8 - Label determines range of labels.
Double click on table row calls Edit range dialog. Edit range dialog interface is similar to Add range dialog (see fig.6).
Add button. This button calls Add range (fig.6) dialog to add range to legend.
Add range dialog
Fig.6
1 - Fill color determines an appropriate color. Double click on rectangle area calls Color choose dialog.
2 - Label determines range of labels'.
3 - Value determines unique(a) or interval(b) range value.
4 - Information displays attribute name, type and min-max values
OK button applies range editions and close Add range dialog.
Cancel button cancels made range editions and close Add range dialog.
Remove button. This button removes selected range(row in range table) from legend.
Legend editor for point layeres

Legend editor for point layers
Fig.7
General tab is used for determining default display settings for point object.
Ranges tab is used for determining ranges display settings for point object. Tab interface is similar to Legend editor for polygonal layers Range tab (fig.5-B).
1 - DefLine Color determines default point symbol border color. Double click on rectangle area calls Color choose dialog.
2 - DefFill Color determines default point symbol fill color. Double click on rectangle area calls Color choose dialog.
3 - Point type. Point type drop down list allows to determine point symbol display type.
4 - Opaque determines layer opaque.
OK button. This button applies legend editions and close Legend editor.
Cancel button. This button cancels legend editions and close Legend editor.
Legend editor for raster layeres

Legend editor for raster layers
Fig.8
General tab is used for determining default display settings for raster cell.
Ranges tab is used for determining ranges display settings for raster cell. Tab interface is similar to Legend editor for polygonal layers Range tab (fig.5-B), but Unique values check box (fig.5-B-5) is not available. Ranges are determined only by interval values.
1 - DefFill Color determines default raster cell color. Double click on rectangle area calls Color choose dialog.
2 - Opaque determines layer opaque.
OK button. This button applies legend editions and close Legend editor.
Cancel button. This button cancels made legend editions and close Legend editor.