Click on any tool to view its description

[In general, clicking on the double-line border of any toolbar opens a dialog with which you can hide or relocate the toolbar or make it floating.]

1. Pan Tool: The Pan or Grabber tool, enabled by default, is used to view a new area of the map space. Click and drag with the Grabber to move the map. As soon as the mouse button is released, the map is completely redrawn.

If you Click on Pan tool button and hold it down momentarily, you will see a list of Pre-saved Positions. You can then simply click on any of them to go to that position in the map. |Back|

2. Zoom Tool: Up to 12 Logical scales can be defined (in GeoConcept) for each map. You can move from one of these scales to the next one in GCIS by first selecting Zoom-In or Zoom-Out and then clicking anywhere on the map. Under zoom-in, the scale changes progressively from Logical scale 12 to Logical scale 1. Once Logical scale 1 has been reached, subsequent mouse clicks have no effect. Intermediate scales can be accessed by selecting a zone directly on the map. To do this, click and drag on the map to draw a selection rectangle. As soon as the mouse button is released, the map is magnified so that the selected area occupies the entire display area.|Back|

3. Pop-up Information Box & Information Form: When this function is activated, each click on a map object opens an Infobox displaying the contents of some of the clicked object's fields (as previously selected and set in GeoConcept). If you click on this tool and hold it down momentarily, it will show the Information Form tool. Select that tool and then click on any object on the map to view the entire DataBase for that map object. By Default the icon for the last-used option appears.

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4. Co-ordinates: The Coordinates button reads coordinates in longitude and latitude for a point clicked on the map. Once this tool is enabled, a text zone appears in which the coordinates for the clicked point are displayed. The text zone remains visible as long as the tool is active.|Back|

5. Selection Tool: When you click on the Selection button, it enables selection of objects on the map with the cursor in the form of an arrow. To select an object, just click on it. When one or several objects are selected on the map, they are coloured to make them stand out. Objects can be selected on the map under 7 different selection modes. A click and hold on the selection tool displays a list of available selection modes from which you can choose one. The last tool in the top line is used to select single Point objects. The last tool in the bottom line is used to set the way the selected objects appear (Color, Hatching, Selection Rectangle).

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6. Object Selection List: A single click on this button opens a window displaying the list of currently-selected objects. If you click and hold this tool, you will see two more options for Clear Selection and Zoom on Selection. Zoom on Selection will zoom the map just enough so that all the selected objects are visible on the window.

Note that you can relocate this window by clicking on the double-line border. See below :

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7. Query Tool: A single click on the Queries button activates the Query function. An applet window appears. The drop down menu (Query kind) prompts you to choose from two types of query available.

• A stored query;

• A free query.

The dialogue interface then alters according to the choice made.

Stored queries: When this option is chosen, a query saved for the current GeoConcept map is executed. All client browsers will have the same series of saved queries at their disposal. The user should then choose a specific query.

If when the query was formulated, parameters were required, certain items of information would need to be entered under the Edit-Parameters dialogue item, to define the query condition or conditions. Once this has been done, click on Execute button to run the query.

Free Queries: The first step is to choose the Class(es) and Subclass(es) and Attribute Field(s) on which the query is to be run. The drop-down list enables choice of the object Class and Subclass to which the query will be applied. Once chosen, click on Add. By default, the objects chosen do not have conditional criteria applied to them. "Any" value therefore signifies that the query should select all the objects of the chosen Class and Subclass. The "Any" Class means that the user is conducting a query on fields common to all Classes, that is, Area, Name and all other fields common to all Classes that the user might have created. The "Any" Subclass includes all the Subclasses for a given Class. "Any" queries will then only act on global fields, and on all fields common to all objects in the Class.

Query on several Classes or several Subclasses of objects: This type of query enables a search to be applied to several Classes and Subclasses at the same time. After each Class/Subclass selection, the user clicks on Add as many times as necessary to complete the selection. When several Classes or Subclasses are used within the query, you can move from one to another by clicking on the Class/Subclass name in the Searched objects dialogue item. The "Remove all" button deletes the query, or queries, shown in the centre. The "Remove" button is used to delete a query that has been specified, and highlighted, previously in the display table. Clicking on "Remove" deletes the selected query. Click on "Execute query" to run the query defined. GeoConcept will then search in the database for all objects matching the query criteria.

Choosing which Conditions to apply to objects : The Edit button provides access to the Query Conditions dialogue box. One can define new (SQL) conditions, or Edit existing conditions.

At any time you can:

•Add a new condition ;

•Remove the active condition ;

•Remove all, to delete all the conditions defined so far.

Finally, the Validate button brings you back to the dialogue item in which the query expression is itself composed.

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