Data publishing

Data publication is provided using the configuration screens of the GeoServer Enterprise and GeoNetwork Enterprise components.

Data organization

Create a workspace, used to organize information for publication:

1. Login to GeoServer Enterprise component using the credentials provided by email.

2. Navigate to Data ❯ Workspaces page listing workspaces.

3. Click Add new workspace link to open a New Workspace page.

   Name	training
   Namespace URI	https://geocat.live/training
   Default Workspace	Unchecked
   Isolated Workspace	Unchecked

   New workspace

   Note

   • prefix: xml prefix used to avoid naming conflict between workspaces.

     Recommend a very short name, using lowercase characters and _, using 3 to 10 characters.

     • example
     • ne
     • census
     • survey_app

   • namespace: xml document namespace, required to be unique to avoid conflict between xml documents.

     The namespace is provided as a URI with the focus on being unique. Recommend using the URL to the team, project or data vendor. You may find it easier to consistently use URL of geocat live instance followed by the prefix above.

     • https://example.geocat.live/example
     • https://www.naturalearthdata.com/
     • https://census.gc.ca/
     • https://github.com/survey_app

   As described above a lot of care is taken to follow the restrictions of the XML document formats used by OGC Web Services such as WFS.

4. The new training workspace is created.

Vector data publication

GeoServer data publication:

1. Upload vector data, GeoPackage format recommended:
   • Use Tools ❯ Resource Browser to upload a GeoPackage file to `data folder
   • Use WebDav access
   • Data directory includes data/ne/physical sample data.

2. Create a new Physical vector data source.

   • Navigate to Data ❯ Stores

     Stores

   • Click Add new Store, locate the Vector Data Sources heading, and click on the Directory of spatial files (shapefiles) link.

     New data source

   • Provide a name and connection parameters for the new data source.

     Basic connection information:

     Workspace	training
     Data source name	Physical

     Connection parameters:

     Directory of shapefiles	file:data/ne/physical

     Click the Browse button for assistance filling in file:data/ne/physical directory location.

     Physical Data source

3. Add a new new geographic_lines layer.

   • Navigate to Data ❯ Layers, click Add a new layer link.

     Note

     When creating a new store you are directly taken to this screen.

   • Select training:Physical data source to list available layers for publication.

     Publish layer

   • Locate the ne_10m_geographic_lines layer, and click the Publish link.

   • Using the Edit layer page fill in the Data tab.

     Basic info:

     Name geographic_lines
     Title Geographic Lines
     Abstract Tropical and polar circles, equator, and International Date Line.

     Basic info

     Note

     • Layer name is machine readable, recommend a short name, using lowercase characters and _.
     • Title and Abstract are human readable.

     Coordinate Reference Systems: The following values have been filled in from the data set.

     Native SRS	EPSG:4326
     Declared SRS	EPSG:4326
     SRS handling	Forced declared

     Coordinate Reference Systems

     Bounding Boxes:

     Native Bounding Boxes	Use Compute from data bounds
     Lat/Lon Bounding Box	Use Compute from native bounds

     Layer bounds

     Note

     The layer data extends slightly outside the valid SRS bounds in this case, consider using :Compute from SRS bounds if you wish to be strict.

     • Click Save to create the layer.

4. Optional: Generate a style.

   • Navigate to Data ❯ Styles

   • Click Add a new style with the following details.

     Style data:

     Name	geographic
     Workspace	training
     Format	YSLD

     New style

     Style Content:

     Generate a default style	Line

     Style content

     Click the Generate link to generate a YSLD line style.

     title: dark orange line
     symbolizers:
     - line:
         stroke-width: 1.0
         stroke-color: '#ff9900'
     

     Press Apply to save the style and remain in the style editor. Once the style is saved the style editor displays additional tabs for publishing, layer preview and layer attributes.

   • Change to the Publishing tab of the style editor.

     Locate the training:geographic_lines layer, using the search if necessary.

     Use the Default checkbox to set this style as the default for the training:geographic_lines layer.

     publishing

   • Change to the Layer Preview tab of the style editor.

     Click on the preview on layer link, and select training:geographic_lines to preview.

     Layer preview

     Update the style definition using:

     rules:
     -   title: Latitude 
         filter: \${featurecla = 'Circle of latitude'} 
         symbolizers:
         - line:
             stroke-color: black
             stroke-width: 1
     

     -   title: Date line 
         filter: \${featurecla = 'Date line'} 
         symbolizers:
         - line:
             stroke-color: blue
             stroke-dasharray: 2 3
     

     Click Apply to view the updated layer preview.

     Style definition

   • Change to the Layer Attributes tab of the style editor.

     Used to summarize dataset to assist with style definition. 5. Use layer preview to check appearance - Navigate to Data ❯ Layer Preview

   • Locate training:geographic_lines in the list, using the search if necessary.

     Layer preview

   • Click the OpenLayer link to open a small layer web application.

     Use the ... menu to explore preview options.

     OpenLayers preview

Raster data publication

GeoServer data publication:

1. Upload raster data, GeoTIFF format recommended.

   • Use Tools ❯ Resource Browser to upload a GeoTIFF file to data folder
   • Use WebDav access
   • Data directory includes data/eaa/DEM_geotiff/alwdgg.tif sample data.

2. Create a Raster Data Source

3. When setting up layer define:

   • Name, Tile, Abstract
   • Spatial Reference System, Bounds

4. Double check in layer preview

   DEM

Basemap publication

1. Create a layer group

   • name, title, abstract

2. Add layers in draw order.

   Please note that layers are listed in draw-order, this can be disconcerting as we are used to z-order.

3. Generates bounds

Catalog metadata record

1. Create a data record from template.
2. Fill in title and abstract information.
3. Associate with WMS layer online resource for map visualization.
4. Associate WCS layer online resource for raster access
5. Publish
6. Confirm listing in catalog and functionality of map viewer.

Spatial data infrastructure integration

1. Record the metadata record URL.
2. Edit GeoServer Layer definition with reference to metadata record URL.