Map overview
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Display of position
The map overview indicates the position and size of the actual map window
relative to the regional overview with a rectangular frame. When viewing a very
small map section (large-scale maps) the frame will be replaced by crosshairs
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The map window can be repositioned by clicking on any place in the map
overview. The click point will then be the center of the new map. This will not
change the map size.
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Toolbar
Some tools trigger an action or open a dialogue for further
entries, immediately.
Other tools control the function of a mouse click in the map window. The
currently active mode can be recognised by a different color of the
corresponding icon.
A selected mode stays active until another mode tool will be selected.
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Refresh map
The actual map section will be refreshed.
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Initial view
The currently selected map will be reloaded
with its initial state. For this purpose the map window will be positioned to
the section which was initially loaded. The
visibility of layers and the
marking for data queries will be reset to the
predefined values. Layers which were loaded by the dialogue
add WMS to layerlist will be deleted from the layerlist.
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Previous view
Access the current map view with the previous bounding box from the history
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Next view
Access the current map view with the next bounding box from the history
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Zoom in
In this mode a click on any place inside the map window will center the map
to that position and increase the map scale by 25%
(e.g. from 1:5000 to 1:3750).
Alternatively with pressed left mouse button you can drag a rectangle within the
map window, which will then be displayed completely in the map window.
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Zoom out
In this mode a click on any place inside the map window will center the map
to that position and reduce the map scale by 25% (e.g. from 1:5000 to 1:6250).
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Zoom to layer
This tool zooms in to the standard bounding box of the selected layer.
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Request feature info
In this mode a click onto the map inside the map window will trigger a
feature info request. The result will be displayed in a new window.
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Recenter
The map section will be centered to the position which was clicked on in the
map window.
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Move map
In this mode you can click on the map at any place and it can be moved with
pressed left mouse button. By releasing the mouse button the movement will be
terminated and the missing parts of the map will be loaded automatically. The
map scale will not be influenced by this action.
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Add WMS
This tool opens a dialogue which provides the opportunity to load further
maps from WMSs in the internet. Layers from these internet servers which are
selected by the user will then be added to the layerlist or to the layertree.
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Print map
A mouse click on this button opens a window, where a pdf document of the
current map view can be generated. Additionally you can specify a title, a
description and the author of the map by using the three text fields.
There are two templates for the document; One with horizontal and one with
vertical alignment.
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enlarge map window
The map window will be enlarged to the width of the portal
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downsize map window
The map window will be scaled down to the initial size.
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Menubar
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Save context
With this function you can save the current processing state of a map.
This not only includes the current bounding box, but also the visible layers and
their order.
The name of the context you want to save can be specified in a text field.
If a context with this name already exists the old one will be overwritten.
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Load context
Contexts that were saved or provided by the administrator, can be loaded by
mouse click on this function. Initially a dialogue will be opened where all
available contexts are listed in a drop down list.
After selecting a context and clicking on the okay button it will be loaded into
the portal.
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Help
A mouse click on this button opens this help page.
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Login
To restrict access to certain tasks or views to registered users, it is
possible to provide a user with a sessionID. This sessionID is granted on login
by entering a valid user name and password. After login, this sessionId will be
attached to each request and verified. To have this functionality enabled in the
portal, the administrator needs to configure deegree.security components.
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Logout
When a user is logged in, this button will enable logout and kill the user's
session.
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Scale
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Scale levels
a drop down list enables to select between different predefined map scales.
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Theme selection
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Theme selection
The drop down list enables you to choose a different map context.
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Switch between legend and layer list
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Drop down list
With this control you can switch between the view of the
layerlist and the legend.
The related element (layerlist or legend) is shown below the toggle switch.
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Layerlist
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Visibility of layers
The visibility of layers will be controlled by the check box in front of the
layer's name. Only the checked (="visible") layers will be requested from the
corresponding Web Map Service and incorporated into the map image.
Changes in this setting will not force a new map request automatically,
this has to be triggered by clicking the refresh button.
Layers highlighted in grey can not be displayed in the preset map section.
For layers added to the map by the dialogue Add WMS, this
function is not available.
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Allocation of data queries
These radio buttons
(  /
 ) control which layer is
requested for feature info request. The feature info
request can refer to only one layer, so the selection of a new layer will
reset a previously made selection
Layers that are not queryable for feature info are not provided with a radio
button.
If a layer which is set to "not visible" at
visibility of layers
( ) is selected for
feature info, it will also be set to visible
( ).
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Resort layerlist
When the map image is built the single layers will be displayed in the same
order as they are displayed in the layerlist. Therefore the topmost layer of the
layerlist will be drawn on top of all the other layers in the map window and so
it possibly covers subjacent layers. The user can move single layers within the
layerlist and sort the list to his individual convenience to avoid undesired
overlay effects.
The single layer to be moved has to be selected by clicking on its name.
The related line will be highlighted in yellow (see fig. left).
By clicking on the controls
 or
 at the bottom of the
layerlist the selected layer will be moved one line up or down.
Resorting the layerlist will not automatically force a new map request, this has
to be triggered by the user by clicking on the tool
refresh.
Single layers can only be moved within their own layergroup.
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Remove and resort layergroups
For each additional map offer, which the user added through the dialogue
Add WMS, a new layergroup will be added to the layerlist.
The same WMS can be added several times (e.g. with different layers). In this
case several layergroups will be displayed with the same name.
If there are multiple layergroups in the layerlist, additional buttons appear
next to their names: The button "remove layergroup"
 will
remove the whole group from the layerlist.
This will cause an automatic rebuild of the map without the layers of the
removed WMS.
With the buttons "move layergroup up"
or
"move layergroup down"
a
particular layergroup can be moved up or down within the layerlist. Unwanted
overlay effects between different groups can be prevented by this. Buttons are
only displayed for those directions to which a movement is possible. After
moving a layergroup up or down, a new map with the changed display order will be
created automatically.
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Legend
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Legend graphics
In the legend area a legend graphic will be displayed for basically each
visible layer (visibility of layers), which explains
the cartographic presentation of the respective layer. An exemplary legend
graphic is shown to the left.
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Place holder
Additional map offers which the user added with the dialogue
add WMS sometimes do not offer a legend to be displayed.
Reason: the legend graphic request for a WMS is standardized, but the actual
delivery of a legend graphic is not mandatory. Thus many WMS do not support the
request of legends at the moment.
In those cases a placeholder graphic will be displayed together with the
title (title)of the map layer(layer), as shown in the
adjoining example.
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Coordinate display
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The coordinates matching the current mouse position are displayed.
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Timeselect
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Time select
The Timeselect modul offers to request and display time-dependant data.
The icon opens a new window, where time parameters may be specified for the
map request.
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Time select parameter form
The form takes a date and a time value, which will be added to the GetMap request
as time-parameter. Further, the form allows to select layergroups from a drop down
list for which this time parameter shall be evaluated.
The date may either be entered directly with the keyboard (YYYY-MM-DD), or by
clicking the calandar symbol. The time (hours and minutes) may be selected from the
drop down lists.
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Metadata search
This module offers metadata search via CSW services.
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Simple & Advanced Search
After starting the module (opens in a new window), you may choose between
simple and detailed (advanced) search.
Simple searches only take a single search string. Detailed searches offer to
restrict the search by topic, date and time or area.
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Layer Based Search
You find this icon at the bottom of the layerlist. When a layer gets selected
by clicking on the layer name, this icon may change from inactive (greyish) to
active (blueish), depending on whether metadata info is availible for this
specific layer.
clicking on the (active) icon will open a new window containing the metadata.
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Gazetteer
The gazetteer module provides a simple opportunity to search for terms with
spatial reference and to reposition the map window to the related map section.
Drop down lists and input fields are offered for that purpose, which change
depending on the selected gazetteer search.
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Drop down list "Search for.."
Select a catalogue with spatial terms for which to search for.
The behaviour of the other controls depends on the selected
catalogue.
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Digitizing
deegree iGeoPortal provides a module to digitize and transfer
own data using WFS transaction.
To use the digitizer module, a WFS and a WMS need to be configured for the
digitized features. Some adjustments in the digitizer module itself need to be
made as well.
Please have a look at the documentation for further details.
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