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====== Using Map Explorer  ======
===== (Viewing Geospatial Data) ====
===== Who is this guide for =====

  * Users visiting Dublinked to explore data and potentially share the results

===== What this guide teaches =====

  * How to view geospatial (map) data in the platform
  * How to access the map explorer from a dataset or from the Map Explorer in the main menu
  * How to add datasets to the Map Explorer
  * How to share the map you have produced

===== Things to know beforehand =====
  * The geospatial format that Dublinked currently supports in its map viewer is WMS. This is created when the data publisher loads either a GeoJSON or KML format resource to the Dublinked geoserver.
  * There are two ways to access the map viewer, either from the main menu, or via the preview map created for a WMS resource. These are described below.

===== [1] Start map viewer from the main menu =====
Select Map Viewer on the main menu
{{ :public:map_explorer_from_main_menu.jpg?600 |}}
Use the Add Data button and the data catalog will now open. From here you can select any data of interest, browsing it either by category or publisher, or using a text search (**NB, exact text match search, eg "bins" will not find "DCC Public bin locations"**):
{{ :public:select_bin.jpg?600 |}}
Use the + symbol to add the data to the map.
{{ :public:select_bin_2.jpg?600 |}}
You will now see the data on the map:
{{ :public:bins.jpg?600 |}}

====[2] Alternatively, add data to a map by searching the data catalog ====
From the Dublinked main menu, search for and select a dataset of interest that has a resource in WMS format (select WMS format onthe datasets selection page).
{{ :public:select_wms_format.jpg?600 |}}
These are the GeoJSON and KML format files that have been uploaded to the Dublinked geoserver, and so have maps available on the site. For this example I selected "DCC Public Bin Locations".

On the dataset page, scroll down to the map viewer where you will see (in this case) the bin locations.

{{ :public:scroll_to_map_explorer.jpg?600 |}}
You can zoom in and out of the map to see more detail.

==== Adding a second dataset to the map ====
To add more datasets to the map, use the "Add Data" button.
{{ :public:add_data.jpg?600 |}}
The data catalog will now open and from here you can select any data of interest, browsing it either by category or publisher, or using a text search (**NB, exact text match search**):
{{ :public:catalog_selection.jpg?600 |}}

I decide to add "Public Lighting DCC", I click on the dataset and get a preview of the data:
{{ :public:add_dataset.jpg?600 |}}
I now use the "Add to the map" button on the preview to add the data.

On the map, I now see the bin data along with the lighting data. I can zoom in and out for more detail.
{{ :public:two_datasets_overlaid.jpg?600 |}}

Any datasets that are published in WMS format can be added to the map view. You can add as many datasets as you like.

====Switching off data to be displayed ====

You can toggle the switch beside the name of the dataset to switch off its display in the map:
{{ :public:bins_toggle.jpg?600 |}}

====Changing the background ====
You can select the background for your map using the Map button:
{{ :public:map_background.jpg?600 |}}

====Sharing the map ====
You can share the map using the Share button to generate a URL you can copy and share. From here, you can also open a printable version of the map.
{{ :public:share_map.jpg?600 |}}


===== See also (for data publishers) =====
  * [[publisher:adding_a_geospatial_resource|Adding a geospatial resource (file)]]
  * [[publisher:copy_styling_from_existing_map|Copying styling from an existing dataset]]
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