Layer Properties

From Geoikia-english

A map is constructed from one or multiple map layers. The layers that are checked in the legend of the Geoide Viewer are combined to one map in the Viewer. The layer information is retrieved from a server. You can configure the layer properties with the Geoide Author.

Required fields are marked with a red asterisk.

Changes are only stored on the server after clicking on Save at the bottom of the Geoide Author.

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WMS and Geoide Service Layer Properties

• Name: name of the new layer. This name is used to identify the layer. This name should be unique (within the Geoide Author).

• Owner: the login name is automatically entered as "owner" of the new layer. It cannot be changed.

• Scope: In this field you can choose between "private" and "public". See Scope (public/private)

• Language / Title: title of the layer. The title can be entered in English (en), Dutch (nl) and German (de). The language setting of your browser, determines which title is displayed. The title appears in the legend of the map and the tree of the Geoide Author.

• Name, Layer: here you choose the service and the layer to which the map layer is refered to. In the Geoide Author one can configure WMS- and Geoide Service layers. Depending on the service, it can be a WMS-layer or Geoide Service layer. A Geoide Service layer has extra options like editing and hyperlinking. If it is a Geoide Service layer, you can use the fields Selectable and Editable (see later in the form) to indicate whether selecting and editing should be possible in the Geoide Viewer.

• Layer info url: Reference to information about the layer (underlying dataset). By filling in the URL, the layer name in the legend in the Geoide Viewer becomes 'clickable' and the URL specified here opens. If you do not enter a URL, then the default URL from the meta-data retrieved from the service is used; the layer in the legend will then automatically become 'clickable'.

• Legend: In this field you can specify whether the layer should be visible ("Initially visible "), and/or expanded in the legend ("Expanded in legend") when launching the Geoide Viewer. If you want to hide the layer in the legend, then uncheck the box "Shown in legend".

• Scale hint: You can specify the minimum (min) and maximum (max) scale, which is useful for layer data to be displayed. If the fields are empty, values are inherited from the service. Note: if scale hint is used, make sure you specify the minimum as well ass maximum values.

• Automatic refresh (from Geoide Basis Version 1.1): you can determine the refresh rate of the layer. If empty a refresh will be done after pan or zoom action in the Geoide Viewer or after refresh of the browser. This is sufficient for normal usage. A more frequent refresh rate is useful for displaying real-time map data.

• Popup URL: This is the URL that pop-ups to display information on objects from a layer in the Geoide Viewer. The Trigger for pop-up determines how the pop-up is displayed. Mouse Click: only by clicking on an object in the map. Mouse Hoover: by moving the mouse over the objects in the map. The pop-up is triggered when the Pop-up URL is combined with the ID of that object. This compound is considered to return html, which is then displayed in the Info Pop-Up screen of the Viewer. (Example of a Pop-up Url: "http://idgisvv.xs4all.nl/europaloket/projecten.jsp?projectId=").

For a WMS layer, the following additional input fields are available under the WMS Options:

• Sld Url: This is the Url to a Styled Layer Descriptor document to be used for this layer.

• Maptip element: If you move the cursor over the map in the Geoide Viewer, a maptip is displayed each time the cursor stands still. Here you can select the information to be displayed in the maptip. Each time the cursor is stationary, a feature-info request is put into operation, with XML response. This get-feature info request is only put into effect when the capabilities of the WMS service indicates that the layer is 'queriable'. In the Geoide Viewer a maptip is only displayed for the upper layer. The XML is built like a tree. This field gives the path to the XML element used as maptip.

Go to EXAMPLE

• Selectable, Editable: If you are using a Geoide Service layer you can indicate whether the layer is selectable and editable. If any of these options are checked, additional input fields are shown (see below for Geoide Service Layer Properties). By definition an "Editable" layer is always "Selectable".

• Reportable: Check this option if a Jasper report is available for this layer. This layer (if visible in the viewer) will be used for the generation of reports through the report function in the Geoide Viewer. See also Generate Reports

• Transparancy adjustable: by checking this option, the transparancy of the layer can be adjusted with the 'TransparancyAdjusterButton' of the Geoide Viewer. See Overview Buttons.

• Additional Info: Space for explanation. Tip: You can also use this field as a notebook.

Extra layer properties for Geoide Service layers

If you have Geoide Service layers and the options Selectable and/or Editable are checked, the following additional input fields are displayed:

• WFS: Select the WFS that corresponds to the Geoide Service. This service is used to store data.

• Feature type name: This is the name of the feature type. Usually this is the same name as used in the field Server (see above).

For system managers: the WFS should be configured in such a way that insert, edit and delete actions 
are accepted for the involved Feature Type.

• Geometry type: Specifies whether the layer contains 'points', 'lines' and/or 'polygons'. If the field is left blank, then the layer may contain points, lines as well as polygons. It is advisable to make a choice as the database table has a particular geometry type (point, line or polygon).

• Feature type properties: By clicking on the arrows you can add or delete feature types from the list (right column). For each feature type, you can use the following fields:
  • Lookup Table: use this table as input for the feature type.
  • Lookup Field: The field used to link the main table and lookup table.
  • Label: the value that is ultimately used in the "attribute-information" pop-up window in the Geoide Viewer, this may be a column in the lookup table or a characteristic feature type.
  • Url prefix: To display the property of a feature type, you can specify a URL prefix.
• Hyperlink property: Here you can select a feature type attribute (from the list of feature type properties) to use as a hyperlink to retrieve information in the map. See Getting information via Url.

• Annotation property: This field allows you to create long text to fill in the "attribute-information" pop-up window of the Geoide Viewer.

The following fields are only available if previously checked in the layer’s setting.

• Object owner, role (s ): use these fields for authorization. If the Geoide Service is secured with login name and password, you can indicate here, who can edit this layer. Only one of the users specified in Role(s) can edit the layer in the Geoide Viewer.

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Example

In this example, the aim is to make an "attribute information" pop-up window, which has the annotation option included. Authorization is also an issue in this example.

In this example the "attribute information" pop-up window consists of four fields.

• The first field is the feature type column (FTC) 'pla_name'. Only the title Name (Naam) is completed.
• The second field is the FTK 'plt_id'. The 'plt_id' is selected in order be able to select in the Lookup Table app: planning_anno the FTC 'pla_name' . This field contains a list of "annotation types". The title of the field is "Type".
• The third field is the FTC 'editor'. This field identifies who is authorized to edit. This column should be added in order to be made selectable in the field Object owner.
• The fourth field is the FTC 'pla_description'. This is the column that can contain annotations (Annotatie). This column should be selected and added in order to be made selectable in the field Annotation.

In the Geoide Viewer the result is an "attribute information" pop-up window with input fields and the associated titles. The title of the "attribute information" pop-up window consists of the layer name ("annotaties tbv planning") and an id-name for the added object (in this case: PLANNING_ANNOS_24).

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