- Known Issues and Limitations
- Access Keys
- Interface Overview
- Interface Header
- Search Results Display
- Web Service Clients
- Zoom, Pan and Scale
- Future releases - proposed functionality and improvements
Known IssuesThe following lists the known issues and limitations of the system:
- Microsoft Internet Explorer 7 - whilst this site will function adequately when using Microsoft Internet Explorer 7, performance will be degraded in comparison to using a more modern web browser.
- Layers disappear when panning East of New Zealand - The layers haven't actually disappeared but rather moved. When you pan past the dateline which runs roughly North/South to the East of New Zealand the layers have moved across the date line. There is no fix planned and it suggested that users are aware of the limitation and use zoom levels and panning that keep the layers within the current field of view.
- The WFS client does not re-position the map to view added features if they are out of the displayed bounds and the advanced section is not intuitive.
- Site is not optimised for mobile devices.
- Can't search from a single point on the map.
- List Access keys
- Search for Products
- Show Help (new window)
- Show Map View
- Show List View
- Show Split View
- Toggle distance measure tool
- Show map layers control
- Reset Map
- Re-display last message
Interface OverviewThe Discovery and Delivery System interface is composed of several distinct parts: [Top]
- Quick Links
- Product search field
- Advanced search
- Delete all search criteria. Clicking the cross beside the Advanced link will remove all search criteria. The cross will only appear when there are search criteria entered.
- Re-show last message. Clicking the balloon icon, which appears to the right of the delete all search criteria button, will re-show the last message shown. No balloon icon appears until there has been a message shown.
- Help (You are currently reading the Help file).
- Discovery and Delivery System
- Place Names Search
- Hazards - Earthquake Hazards 2012 map
- Floods - The Historic Flood map
The Product Search field provides the primary input field for searching. Click on the search icon, or press the enter key to initiate the search.
By default this searches title, keywords and abstract (multiple search terms are treated as a Boolean 'OR'). More recent publication dates are also weighted in preference to older products. A well chosen small set of search terms is often better than having a larger number of search terms. Reducing the number of terms often narrows your result set to more relevant results.
To search for specific phrase, enclose the phrase in double quotes ("). For example a search for "murray river" (with quotes) searches for all GA products that contain the phrase murray river. A search for murray river (without the quotes) searches for all GA products that contain the word murray or the word river. Search terms are case-insensitive.
Please note that a Delete all search criteria icon (X) will appear after you have entered search text into the Product Search field.[Top]
- National datasets onlyChecking this box will limit your search to GA National Datasets.
- ThemeThe Theme drop down list allows you to apply a specific theme as a filter for your search, for example, limiting your search to bathymetry data only.
- Product typeThe Product type drop down list allows you to limit your search to specific product types, such as multimedia files.
- Author surnameThe Author surname text input allows you to limit your search to specific authors. Author's names are most often stored as surname followed by a comma and a space, then one or more initials where each intitial is followed by a full stop. Using surname alone is usually enough to limit your search.
More than one author can be searched upon by separating names with a space. Boolean operators can also be used. For instance jones AND logan will find those products where both a Jones and a Logan authored the product. Note that the AND is case sensitive and a lower case and will be treated as a name.
More advanced searches can be made using the prefix of author: followed by your search terms in the top product search text input area. See detailed search information for information and examples of creating advanced searches.
Choose location on map
- Draw area on mapAfter clicking the Draw area on map button, use the mouse to draw a box on the map to select your area of interest. This will set the search criteria to the coordinates defined by the box. To complete the search, click on the search icon ( )
- Set to map extentThis option sets the bounding box slightly smaller than the current extent of the map.
- Choose location by lat/longThis function allows you to manually enter location coordinates in decimal degrees.
The location defined by the coordinates will become a search parameter. When entering values, the following rules must be observed:
- N. Lat must be a numeric value between -90.0 & 90.0
- E. Long must be a numeric value between -180.0 & 180.0
- S. Lat must be a numeric value between -90.0 & 90.0
- W. Long must be a numeric value between -180.0 & 180.0
- Publication yearSelect the Publication year from the drop down list.
- Publication year rangeSelect the From and/or To publication date range from the drop down list.
- Acquisition datePlease note that the Acquisition date panel is minimised by default
- DateManually enter an Acquistion date in dd/mm/yyyy format, or click on the calendar icon and select an acquisition date using your mouse.
Keyboard shortcuts are avilable for the calendar date picker. Please refer to this list of keyboard shortcuts
- Date rangeManually enter a FROM and/or TO date in dd/mm/yyyy format, or click on the calendar icon and select a FROM and/or TO acquisition date using your mouse.
Keyboard shortcuts are avilable for the calendar date picker. Please refer to this list of keyboard shortcuts
- SearchClick the search button to perform your search.
Keyboard shortcuts for the date pickerWhile the datepicker is open, the following key commands are available:
- PAGE UP Move to the previous month.
- PAGE DOWN Move to the next month.
- CTRL+PAGE UP Move to the previous year.
- CTRL+PAGE DOWN Move to the next year.
- CTRL+HOME Move to the current month. Open the datepicker if closed.
- CTRL+LEFT Move to the previous day.
- CTRL+RIGHT Move to the next day.
- CTRL+UP Move to the previous week.
- CTRL+DOWN Move to the next week.
- ENTER Select the focused date.
- CTRL+END Close the datepicker and erase the date.
- ESCAPE Close the datepicker without selection.
Distance Measure Tool
Clicking the Map Layers button allows you to toggle the map layers dialog and select the map base layer & overlays you wish to display on the map.
Each type of overlay provides visual information to help interpret and understand the map data.
The Map Layers tool is also used when displaying information as a web service on the map. Data available as a web service are identified by the Open Geospatial Consortium (OGC) symbol .
The dialog allows toggling between base layers, showing or hiding other layers, changing the opacity of selected layers and showing the legend for a layer.
If you add layers using other functionality within the application you can remove them from the dialog by clicking the delete icon .
The search criteria are displayed after initiating a search and reflect the criteria used for the most recent results. The summary area displays the following information and functionality
Send search criteria by email
The email search criteria button
- The mandatory field for email addresses that you would like to send the criteria to. The email addresses must be valid and there must be between one and three email addresses provided. If more than one then the email addresses must be comma separated.
- The optional text field to give extra context to the recipients of the email so that know why the link has been sent
- The mandatory validation numbers or Captcha to ensure that the sender is human. The four digits from the image need to be typed into the field.
Beside the image containing the four digits.
- The Refresh link allows a new image to be presented for those instances where the image is too hard to read and
- The speaker button allows the numbers to be read out to aid completion of the validation field.
Save search criteria as a bookmark
Bookmarked search criteria can be saved as a bookmark or copied for other use such as emailing. When the saved link is clicked it will restore the search criteria and initiate a search. The returned results list is likely to be the same list as when the link was saved or bookmarked but it may change as products are added or removed or if the metadata describing the products changes.
Initial searching returns at most 50 matched products. The results summary will state the approximate number of matched records, e.g.. If there are more results they will be fetched in blocks of 50 results until they all are retrieved. Extra requests are initiated by scrolling to the bottom of the results on the split view or hitting the button on the bottom of the list view.
Showing all results on map.
Most products have a bounding area that can be shown on the map. The display of the bounding areas (if available) of the listed products can be toggled using the button with the map of Australia.
Individual product's bounding areas can be toggled on or off via their own toggle button in the results list.
OGC web services
The OGC service allows you to interact with the dataset using a generic web service client, via XML, or allows you to consume the dataset through your own third party web services tool. When using the web services clients (below), the selected services will be rendered on the map and can be interracted with using the Map Layers control.
WMS web service
The WMS web service client is available for those products that have a WMS service listed in their metadata. Once the dialog has appeared a list of layers that exists within the WMS service are listed and these layers can be chosen to be presented on the map by selecting them via their checkboxes and hitting the Show button.
Hint: Drag a layer up or down to change its rendering order. Layers are ordered so that the layer at the top of the list is rendered first with subsequent layers rendered over it. The dialog allows the dragging of a line up or down to change the rendering order.
WFS web service
The WFS web service client is available for those products that have a WFS service listed in their metadata. There are some steps that allow you to view WFS features on the map.
- If the product has multiple services a service selector will appear that allows you to interact with a single service.
- A service can have multiple feature types. To proceed pick one from the drop down list.
Clicking the Show Feature button will render the default number of features. Some features can be quite complex and take some time to render so the default is set low to allow you to determine the acceptable rendering time.
The advanced section allows you to restrict features to a given bounding area or to add filters to the query.
The Property Name is pre-populated from the feature type meta data, in this case the XML schema definition (XSD) which can be viewed on the XML tab under the heading WFS Feature_Type Details. The coordinates of the bounding box are taken from the bounding box on the map. The bounding box is included in the query if the Set Bounding Box check box is checked. You can add or change the bounding area by clicking the Draw button. The Choose location on map section of the Advanced section allows you to add, change or delete a bounding box.
Other filters can be applied using the appropriate values for other fields mentioned in the XSD by clicking the Add button.
WCS web service
The Web Coverage (WCS) Service allows you to download different output formats from a single service, where that service response can be restricted to a defined area and to a particular projection.
The raw data from the phases of the service interaction can be viewed on the XML View tab where:
- WCS Endpoint. This can be used in other richer third party tools that specialise in WCS consumption or within your own tool.
- WCS Get Capabilities Response. Contains metadata about the WCS service and data holdings.
- WCS Describe Coverage Response. Delivers XML descriptions of coverages (such as their location in space and time).
- Download URL. Once the download button is pressed on the WCS tab, the generated URL used to download the product is replicated into this field.
The Draw button allows dragging a bounding area on the map whose coordinates are used to restrict the area rendered once the download button is pressed. Those bounds are immediately below the button.
Services can support coverages in a variety of formats and those formats supported by the service currently being used are listed in the Output Format select box. Some output formats may require specialised tools to use.
CRS is the projection. While the application uses the WGS 84 as its default projection, others may be more relevant to you. You can select the most relevant projection for your needs from the drop down list.
The download icon is used in two ways:
- To provide an immediate download of the product if there is only one format available.
- To display alternatives if the product is available in more than one format.
Click to view area on map
If the map icon is greyed out, it means that the dataset has no spatial boundaries, and therefore the search result cannot be viewed on the map.
Where applicable, the product can also be directly downloaded from the metadata information page. If the product is not available for immediate download, you will be informed of the contact details for the product owner, or prompted to enter your contact information if the product has to be retrieved and/or processed from an archive storage location.
Zoom, Pan and Scale
Topic contact: email@example.com Last updated: June 19, 2013