# Catalogues

Catalogues are collections of layers that are available from a single endpoint.

# Sources

# QGIS Server

QGIS Server can serve catalogues in the following types:

  • WMSGetCapabilities
  • WFSGetCapabilities
  • QGISProjectSettings (includes WMS and WFS resources, and some custom settings)

# Configuration 

{
  "title": "Assets Catalogue",
  "group": "Assets",
  "type": "QGISProjectSettings",
  "localDataSource": true,
  "config": {
    "spatial": {
      "url": "https://bs-gis.pozi.com/iis/qgisserver?service=WMS&REQUEST=GetProjectSettings&MAP=//bs-intra/GIS/System/POZI/QGIS Projects/Assets.qgs"
    }
  },
  "styleGeoStyler": {
    "url": "https://bs-gis.pozi.com/iis/qgisserver?service=WMS&request=GetStyles&MAP=//bs-intra/GIS/System/POZI/QGIS Projects/Assets.qgs",
    "type": "SLD"
  },
  "showInLayerControl": true
}

Note the critical difference between the two URLs:

  • Catalogue: request=GetProjectSettings
  • Styles: request=GetStyles
 
{
  "title": "Aerials Catalogue",
  "group": "Aerials",
  "type": "WMSGetCapabilities",
  "localDataSource": true,
  "showLegend": false,
  "config": {
    "spatial": {
      "url": "https://bs-gis.pozi.com/iis/qgisserver?service=WMS&REQUEST=GetCapabilities&MAP=//bs-intra/GIS/System/POZI/QGIS Projects/Aerials.qgs"
    }
  },
  "linkedLayers": [
    "Vicmap Labels"
  ]
}

# WMS (Web Map Service)

# Configuration 

{
  "title": "Elevation",
  "group": "Elevation",
  "type": "WMSGetCapabilities",
  "config": {
    "spatial": {
      "url": "https://bs-gis.pozi.com/iis/qgisserver?service=WMS&REQUEST=GetCapabilities&MAP=//bs-intra/GIS/System/POZI/QGIS Projects/Elevation.qgs"
    }
  },
  "localDataSource": true
}
 
{
  "title": "DataVic",
  "group": "DataVic",
  "type": "WMSGetCapabilities",
  "config": {
    "spatial": {
      "url": "https://services.land.vic.gov.au/catalogue/publicproxy/guest/dv_geoserver/wms?request=getCapabilities"
    }
  }
}
# Parameters
# Use alternative GetFeatureInfo request parameters

By default, Pozi generates its GetFeatureInfo requests to use info_format=application/json.

However, if the endpoint is an ArcGIS server, it may respond with the following error: "Parameter 'InfoFormat' contains unacceptable value." This is because ArcGIS's WMS GetFeatureInfo requires the parameter info_format=application/geojson.

Override Pozi's default GetFeatureInfo behaviour as follows:

  "config": {
    "spatial": {
      "params": {
        "info_format": "application/geojson"
      }
{
  "title": "Society - Schools And School Catchments",
  "group": "Society",
  "type": "WMSGetCapabilities",
  "config": {
    "spatial": {
      "url": "https://spatial-gis.information.qld.gov.au/arcgis/services/Society/SchoolsAndSchoolCatchments/MapServer/WMSServer?&service=WMS&request=GetCapabilities",
      "params": {
        "info_format": "application/geojson"
      }
    }
  }
}

# Single-Layer Catalogue

When you specify a reference to an individual layer in the GetCapabilities URL, you can effectively use the response as a single-layer catalogue.

Examples:

# Custom Catalogues

# DataVic

The DataVic WMS GetCapabilities is a 1MB file containing over 600 layers. While it's possible for Pozi to consume this entire catalogue, it will slow down the app load, and the user would see all 600 layers in a single layer group.

To provide a faster and more useful user experience, the catalogue is customised to remove unwanted layers and split it into separate catalogues to be shown in separate layer groups.

These custom catalogue files can be hosted as static files.

# Vicmap Admin
  1. download DataVic WMS GetCapabilities and save as datavic-wms.xml
  2. save copy as datavic-wms-vmadmin.xml
  3. modify datavic-wms-vmadmin.xml
  • search for first instance of vmadmin
  • delete all <layer> elements that appear beforehand
  • search for last instance of vmadmin
  • delete all <layer> elements that appear afterwards
  • find and replace - Vicmap Admin with [blank]
  • find and replace (polygon) with [blank]
  • find and replace WARD with Ward
  1. save
  2. upload in Pozi Config Manager
{
  "title": "Administrative Catalogue",
  "group": "Administrative",
  "type": "WMSGetCapabilities",
  "config": {
    "spatial": {
      "url": "https://config.pozi.com/public/files/datavic-wms-vmadmin.xml"
    }
  }
}

# WFS (Web Feature Service)

# Configuration 

{
  "title": "Assets",
  "group": "Assets",
  "type": "WFSGetCapabilities",
  "serverType": "qgis",
  "config": {
    "spatial": {
      "url": "https://hrccsvrgis01.pozi.com/iis/qgisserver?service=WFS&request=GetCapabilities&MAP=//ad.hrcc.vic.gov.au/shared/GIS/workspaces/Pozi/Assets.qgs",
      "id": "$id"
    }
  },
  "styleGeoStyler": {
    "url": "https://hrccsvrgis01.pozi.com/iis/qgisserver?service=WMS&VERSION=1.3.0&request=GetStyles&MAP=//ad.hrcc.vic.gov.au/shared/GIS/workspaces/Pozi/Assets.qgs",
    "type": "SLD"
  },
  "localDataSource": true
}

Note the style URL has two critical differences from the data URL:

  • service=WMS (not WFS)
  • request=GetStyles (not GetCapabilities)
# Parameters
# Restrict results to bounding box 
  "config": {
    "spatial": {
      "params": {
        "BBOX": "-38.27,144.66,-38.24,144.71"
      }
{
  "title": "Vicmap Features of Interest",
  "group": "Features of Interest",
  "type": "WFSGetCapabilities",
  "config": {
    "spatial": {
      "url": "https://data.pozi.com/datavic/datavic_wfs_getcapabilities_vmfeat.xml",
      "params": {
        "BBOX": "-38.27,144.66,-38.24,144.71"
      }
    }
  }
}
# OGC Filter

WFS requests utilise OGC filters that can be applied to target specific records.

# Custom Catalogues

# data.gov.au
# Southern Grampians Land Capability
  1. go to https://jsonformatter.org/xml-pretty-print
  2. Load Data > Load URL > https://data.gov.au/geoserver/wfs?request=GetCapabilities
  3. Download > save as datagovau-wfs.xml
  4. save copy as datagovau-wfs-southerngrampians-landcapability.xml
  5. modify datagovau-wms-southerngrampians-landcapability.xml
  • search for first instance of southern-grampians-model
  • delete all <FeatureType> elements that appear beforehand
  • search for last instance of southern-grampians-model
  • delete all <FeatureType> elements that appear afterwards
  • find and replace Southern Grampians Model of with [blank]
  1. save
  2. upload in Pozi Config Manager
{
  "title": "Land Capability WFS Catalogue",
  "group": "Land Capability",
  "type": "WFSGetCapabilities",
  "config": {
    "spatial": {
      "url": "https://config.pozi.com/public/files/datagovau-wfs-southerngrampians-landcapability.xml"
    }
  },
  "styleGeoStyler": {
    "type": "SLD",
    "url": "https://config.pozi.com/public/files/datagovau-wfs-southerngrampians-landcapability.sld?"
  },
  "opacity": 0.5
}

This configuration is designed to apply the same style to every layer in the catalogue.

The ? at the end of the style URL allows Pozi to add layer parameters (as it normally does for style requests) but have those parameters ignored by the server.

# WMTS (Web Map Tile Service) 

{
  "title": "Vicmap Basemaps",
  "group": "Basemap",
  "type": "WMTSCapabilities",
  "config": {
    "spatial": {
      "url": "https://base.maps.vic.gov.au/service?SERVICE=WMTS&REQUEST=Getcapabilities"
    }
  }
}

# Settings

# folder

When "folder": true is specified, the catalogue layers will appear within a layer folder, named after the catalogue title. In this way, multiple catalogues can appear in the one layer group, each with their own folder.

In this example, the catalogue layers will appear within a folder called 'Vicmap Admin' within the 'Vicmap' layer group.

{
  "title": "Vicmap Admin",
  "group": "Vicmap",
  "type": "WMSGetCapabilities",
  "config": {
    "spatial": {
      "url": "https://config.pozi.com/public/files/catalogues/deeca-opendataplatform-wms-vmadmin.xml"
    }
  },
  "folder": true
}

# layerFilter

The layerFilter setting allows for managing what layers to show/hide. Only the layers that match the filter will be shown.

The matching is case-insensitive and allows for the use of wildcards for inclusion/exclusion.

Example filter settings:

  • "kindergartens; schools": only show the layers that are called kindergartens or schools
  • "kinder*; *zones; *bus*": show all layers that start with kinder, end with zones or have the word bus anywhere in the layer name
  • "!(child care centres | schools)": hide layers that are called child care centres or schools
  • "!(kinder* | *zones | *bus*)": hide all layers that start with kinder, end with zones or have the word bus anywhere in the layer name
  • "(*urban* | *commercial*); !(*boundary | *dem*)": show all layers that either have urban or commercial in their name but exclude any of these matching layers that end with boundary or have dem anywhere in the name
{
  "title": "Transportation - State Road Information",
  "group": "Transportation",
  "type": "WMSGetCapabilities",
  "config": {
    "spatial": {
      "url": "https://spatial-gis.information.qld.gov.au/arcgis/services/Transportation/StateRoadInformation/MapServer/WMSServer?&service=WMS&request=GetCapabilities"
    }
  },
  "layerFilter": "!*not available*"
}