Product Navigator User Guide

Transcription

1 Product Navigator User Guide Table of Contents Contents About the Product Navigator... 1 Browser support and settings... 2 Searching in detail... 3 Simple Search... 3 Extended Search... 4 Browse By Theme... 8 Common Settings for Searches... 8 List of Results Product Display Description Tab Categorisation Tab Distribution Tab Metadata Tab Navigate the List of Results Feedback Reset Open Search Interoperability i

2 About the Product Navigator The EUMETSAT Product Navigator is used to search and obtain details about four types of resources held by EUMETSAT: Climate: describes a climate product type Dataset: describes a satellite product type Document: describes documents available from EUMETSAT Software: describes software available from EUMETSAT The following search methods are available to search for the above: Simple Search: searches for single or multiple keywords (and variations) across all metadata fields (suitable for general searches) Extended Search: Using AND searches can be conducted across a subset of given metadata fields (ideal for targeted searches) Browse by Theme: tree-based access to resources based on themes i.e. satellite, instrument, category, societal benefit area or dissemination. All three searches (Simple, Extended and Browse by Theme) are accessible via separate URLs. You can bookmark your favourite search type as the default start page. The URLs are: Detailed information is available for each of these search methods later in this guide. The Product Navigator starts by default with the Simple Search form. Clicking on the Search button without any text will display all available resources. Try to be as specific as possible when entering search terms; e.g. MSG wind, GOES South America fire, or combine two or more terms with quotation marks, e.g. sea surface temperature. Searches can be further targeted by selecting one or more resource type(s) to be searched (e.g. dataset, document and/or software), 1

3 Browser support and settings The Product Navigator has been tested in several browsers and versions, including: MS Internet Explorer version 8.0 Firefox version 3.6 Safari version In order for the Product Navigator to work correctly, your browser will need to have the following settings enabled: Accept cookies JavaScript activated The recommended screen resolution is 1280x1024 pixels. 2

4 Searching in detail The Product Navigator offers: Simple Search: a quick search function that employs fuzzy logic suitable for general searches. Extended Search: a targeted search with the option to filter by multiple metadata attributes recommended for users looking for a specific product type. Browse by Theme: a pre-defined tree navigation of products based on several themes, including satellite, category (marine, land, etc.), societal benefit area (disasters, weather etc.) and dissemination types. In the Extended Search, you can also limit the results to a selected geographical area by selecting the spatial extent. Simple Search The Simple Search function employs fuzzy logic when searching metadata, and can be made on the basis of a few inputs. These parameters include: Climate: a climate product type Dataset: a satellite product type Document: documents available from EUMETSAT Software: software available from EUMETSAT 3

5 A text input field is used for entering search terms, either individually or in combinations. The search is by default whole-word based. For example, searching for the term cea would not return the word ocean. However, by entering the terms ocean or part of the word between asterisks (*) i.e. *cea* the search would be successful. The following syntax types are available for a Simple Search: Combined terms (phrases) should be enclosed in quotation marks ( ), e.g. "sea surface temperature" Wildcards can be inserted for indeterminate characters, e.g. *land, North*, *use* For best results, try to use multiple search terms; e.g. MSG wind, GOES south America fire or combine two or more terms with quotation marks e.g. sea surface temperature. Note that the Simple Search does not distinguish between upper and lower case letters. Note that Simple Search has an autocomplete. After three characters are entered an automatic search for matching keywords is made and a list of hits is presented. The list is amended as further letters are entered: Extended Search We recommend that you use the Extended Search whenever possible. With the Extended Search you can refine your search criteria by choosing subsets of attributes. In general, filtering using two or more criteria delivers the most accurate results. 4

6 Extended Search attributes include: Collection Type Restrict the resource to be searched: Climate: describes a climate product type Dataset: satellite product types Document: documents available from EUMETSAT Software: software available from EUMETSAT One or more entries can be selected by holding down the CTRL key while selecting other entries with the left mouse button. Societal Benefit Area Select one or more benefits if you want to search for a specific societal benefit area. As shown below one or more entries can be selected by holding down the CTRL key while selecting other entries with the left mouse button. 5

7 Category Search one or more categories. One or more entries can be selected by holding down the CTRL key while selecting other entries with the left mouse button. Product Provider Used to find resources from a particular Provider. Dissemination Used to find resources for the selected dissemination method. Product Status Used to search for resources only with the selected product status. Satellite The search will only show resources from the selected satellite. This is only relevant for dataset(s). Instrument The search will only show resources from the selected instrument. This is only relevant for a dataset(s). Collection Reference Specify the collection reference (if known) e.g. EO:EUM:DAT:MSG:HRSEVIRI Collection Name Specify the collection name (if known) e.g. High Rate SEVIRI Level 1.5 Image Data - MSG - 0 degree or *SEVIRI* Description 6

8 This will search for a word or string in the abstract field. Acronym Searches for the acronym name, e.g. HRSEVIRI. For further help, please consult the list of acronyms ( Show Acronym List ). Time Range: from to This displays all records representing a time interval falling within or overlapping with your selected time range. We recommend that this feature be used in conjunction with multiple filters to further narrow search results. Spatial Extent Define Area of Interest and search with a spatial filter. Selecting the button Define an Area of Interest displays a global map allowing the user to select an area. Hold down the SHIFT key and the left mouse button and drag the mouse to select an area of interest. Once selected, close the window with the close icon to accept the area. Access Constraint 7

9 Find open Access collections while activating the access constraint field. Show EUMETSAT Data only Find Data from the EUMETSAT Application Ground Segment (Central Facility and Satellite Application Facilities). On the menu to the left-hand side under Settings, the Auto Hit Counter can be turned on or off. When activated, you will see the number of hits change as you tick check boxes or enter search strings. The setting EUMETSAT Data will affect the sort order of the returned results. EUMETSAT Data in ascending order, will first show all resources of EUMETSAT in alphabetic order followed by non-eumetsat resources. In descending order non- EUMETSAT Data is shown first. Browse By Theme When browsing by theme a search is executed based on a tree structure. Selecting a particular theme will display all resources fulfilling the criteria. At upper levels of the hierarchy, you can explore the themes directories. Once a topic is selected ( directory or document), all the entries associated with or subordinate to the theme will be displayed in a results list. Common Settings for Searches Define your settings for sorting search results or the number of hits during query creation. 8

10 If you want to change the order of the result list displayed, select your preference under Search > Settings. Modifying the Auto Hit Counter will affect only the Extended Search. Available hits are dynamically shown ( Number of Records ) when defining or changing query parameters. This capability is configurable: switch on/off within the Settings Dialog. The default setting is switched-on. 9

11 List of Results The results of a search are displayed in a navigable result list. When viewing the result list, the list can be printed by clicking on the print page icon. 10

12 Detailed product information is displayed when clicking on a product s title and additional product services are available by clicking on the associated product icons, as described below: Data Access Data Centre Access to the resource in the EUMETSAT Data Centre. Direct Access EUMETCast Access to the EUMETCast subscription service through the Earth Observation Portal. Show Spatial Extent Link to display the Spatial Extent window which displays the geographic bounding box for the product. Bookmark Record You can bookmark a collection based on a URL addressing schema on the Collection Reference. Show Detail Information Displays the detailed product information. Show Aggregated Metadata Shows all resources which are related to this metadata (presently not used within our resources). Export Metadata Set as XML Metadata can be exported as XML, enabling you to save the file locally. If you need to fully 11

13 validate the schema, you can add in the XML header xsi:schemalocation=" which will access the online available schema at EUMETSAT. The header would then look like: <gmi:mi_metadata xmlns:gmi=" xmlns:str=" xmlns:date=" xmlns:fn=" xmlns:xlink=" xmlns:xsi=" xmlns:gmd=" xmlns:gml=" xmlns:eum=" xmlns:gco=" xmlns:xdt=" xmlns:gmx=" xmlns:xs=" xmlns=" xsi:schemalocation=" Note: Moving the mouse over a product s thumbnail image displays a pop-up window showing a larger version. 12

14 Product Display The product selected from the result list is displayed on the screen with the following four tabs of information: Description: a general descriptive overview of the product Categorisation: thematic keywords that describe the product, the instrument and the satellite (if applicable) Distribution: lists the various distribution mechanisms for the product Metadata: a collection of metadata, such as the internal identifier of the product Note that by selecting the Print Page icon ( all the four tabs will be printed. ) in this view all the details of the product from Description Tab The Collection Reference is a unique reference for each product, based on the Product Provider, data collection type, satellite and acronym. The Collection Name is the official name of the product. The Acronym lists the dissemination acronym and archive acronyms of a product (in that order). 13

15 The Description is a brief overview of the product. The Product Status states the dissemination status of the product. States include: Operational, Pre-operational, Demonstration and Development. The Date is the date of creation and/or revision of the product. The Time Range: The begin represents the time at which the product was first made operational. In the case of some older products, the begin date is the first date at which the product was archived. The end represents the time at which the product ceased to be available even from the Archive. This field is usually left blank. Geographic Bounding Box: this is a rectangular geographical region within which the product is available. The default is the whole globe, defined by North-South coordinates = +/- 90, East-West coordinates = +/- 180 degrees. Point of Contact: these are the contact details of the originating centre of the data, i.e. the Product Provider - typically the name of the organisation. EUMETSAT Helpdesk contact details are also provided. Categorisation Tab The Categorisation tab contains some product information relating to search topics and thematic keywords, such as to which category and societal benefit area the product corresponds. In addition, you will find information on the satellite and instrument channels (if applicable), a link to an example image, and links to other available online resources. 14

16 Distribution Tab The Distribution Tab contains information about the various product distribution mechanisms. There are various mechanisms such as: EUMETCast, the EUMETSAT Data Centre, the Global Telecommunication System (GTS), Direct Dissemination and via the Internet etc. The most complete set of information is displayed for EUMETCast dissemination, including file name examples, file formats, average file sizes and dissemination frequencies. Selecting the EUMETSAT Data Centre link will automatically open the online ordering Java Web Start Application and flag the acronym of the product for ease of access to this product. Any Legal Constraints relating to the access and use of the data are set out after the dissemination information as follows: Use Limitations: This metadata element defines the conditions for access and use of spatial datasets. Access Constraints: Applied to assure the protection of privacy or intellectual property, and any special restrictions or limitations on obtaining the resource. Use Constraints: Constraints applied to assure the protection of privacy or intellectual property, and any special restrictions or limitations or warnings on using the resource or metadata. Data Policy: Name of the handling restrictions on the resource. 15

17 Metadata Tab The Metadata Tab contains information on the date the product was entered in the database, in which language the information is displayed and certain (internal) identifiers that are not useful to most external users. Navigate the List of Results The total number of records is indicated as a series of page numbers above the results list. Clicking a page number will display the page s content. Show First/Last Page Jump to the first or last page of the result list. Page Forward/Backward Browse the pages backward or forward in sequence. 16

18 Feedback You are welcome to submit feedback to EUMETSAT via . Reset The Reset button in any search interface (Simple, Extended Search and Browse) reloads the currently selected search interface. 17

19 Open Search To use the OpenSearch for Product Navigator, you have to: Open the Product Navigator start page in your browser (e.g. Firefox ): Select "EUMETSAT Product Navigator - search satellite metadata resources" in the OpenSearch drop-down list-box (right-top in your browser); Put in a keyword in the search field, e.g. "wind"; and Start the query Important note: searches must always include keywords or at least one wildcard (*). 18

20 Interoperability The Product Navigator is compliant with the Open Geospatial Consortium (OGC) Web Catalogue Service (CSW) for the publication and supply of metadata with respect to geo services, spatial data and applications (metadata information management).the system implements both the OGC CSW interface and the associated ISO Metadata Application Profile 1.0. In addition, it supports both the DE Profile for CSW 2.0 catalogue. The Product Navigator makes its metadata available to external parties via standardised interfaces. The web services URL is: The Capabilities URL is: st=getcapabilities Features: OGC Catalogue Service for Web (CSW) with SOAP and HTTP GET/POST bindings Supports the current ISO Metadata Application Profile 1.0 for CSW catalogue services Supports the DE profile for CSW 2.0 catalogue services ISO V 1.0 for the encoding of metadata Networking with other catalogues in distributed searches EUMETSAT is an Associate Member of the Open Geospatial Consortium (OGC). 19