7-8. Review the full configuration

What you built

Your layer now carries seven constraints on a single COG data source:

• one categorical constraint (land cover),
• five continuous constraints (elevation, slope, ruggedness, distance to power line, distance to settlement),
• one combined constraint (altitudinal zones).

Each constraint was given a band index automatically, in the order the constraints were added. You do not need to set these by hand, but you will see them in the exported JSON.

Reference JSON

Use the per-layer {JSON} editor to compare your layer against the finished version below — or paste it in wholesale if you want to skip ahead.

{
  "id": "austria-wind-power-density-at-100m",
  "name": "Austria Wind Power Density at 100m",
  "isActive": false,
  "data": [
    {
      "url": "https://eox-gtif-public.s3.eu-central-1.amazonaws.com/DHI/PowerDensity_100m_Austria_WGS84_COG_clipped_3857_fix.tif",
      "format": "cog",
      "zIndex": 50
    }
  ],
  "constraints": [
    {
      "url": "https://eox-gtif-public.s3.eu-central-1.amazonaws.com/DHI/Copernicus_DSM_COG_10m_3857_fix.tif",
      "format": "cog",
      "label": "Elevation",
      "type": "continuous",
      "interactive": true,
      "min": 0,
      "max": 4000,
      "units": "meters",
      "bandIndex": 2
    },
    {
      "url": "https://eox-gtif-public.s3.eu-central-1.amazonaws.com/DHI/Copernicus_DSM_COG_10m_3857_fix.tif",
      "format": "cog",
      "label": "Altitudinal zones",
      "type": "combined",
      "interactive": true,
      "units": "meters",
      "constrainTo": [
        { "label": "0 to 1000",    "min": 0,    "max": 1000 },
        { "label": "1001 to 2000", "min": 1001, "max": 2000 },
        { "label": "2001 to 3000", "min": 2001, "max": 3000 },
        { "label": "> 3000",       "min": 3001, "max": 4000 }
      ],
      "bandIndex": 3
    },
    {
      "url": "https://eox-gtif-public.s3.eu-central-1.amazonaws.com/DHI/Copernicus_10m_DSM_COG_Slope_3857_fix.tif",
      "format": "cog",
      "label": "Slope",
      "type": "continuous",
      "interactive": true,
      "min": 0,
      "max": 65,
      "units": "degrees",
      "bandIndex": 4
    },
    {
      "url": "https://eox-gtif-public.s3.eu-central-1.amazonaws.com/DHI/RuggednessIndex_Austria_3857_COG_fix.tif",
      "format": "cog",
      "label": "Ruggedness Index",
      "type": "continuous",
      "interactive": true,
      "min": 0,
      "max": 1,
      "units": "index values",
      "bandIndex": 5
    },
    {
      "url": "https://eox-gtif-public.s3.eu-central-1.amazonaws.com/DHI/PowerLineHigh_EucDist_Austria_3857_COG_fix.tif",
      "format": "cog",
      "label": "Distance to High Power Line",
      "type": "continuous",
      "interactive": true,
      "min": 0,
      "max": 30000,
      "units": "meters",
      "bandIndex": 6
    },
    {
      "url": "https://eox-gtif-public.s3.eu-central-1.amazonaws.com/DHI/WSF_EucDist_Austria_3857_COG_fix.tif",
      "format": "cog",
      "label": "Distance to settlement (WSF)",
      "type": "continuous",
      "interactive": true,
      "min": 0,
      "max": 5500,
      "units": "meters",
      "bandIndex": 7
    },
    {
      "url": "https://esa-apex.s3.eu-west-1.amazonaws.com/APEX-example-data/constraints/PowerDensity_100m_Austria_WGS84_COG_clipped_3857_fix-esa_worldcover_2021.tif",
      "format": "cog",
      "label": "Land Cover (from World Cover)",
      "type": "categorical",
      "interactive": true,
      "constrainTo": [
        { "label": "Tree cover", "value": 10 },
        { "label": "Shrubland", "value": 20 },
        { "label": "Grassland", "value": 30 },
        { "label": "Cropland", "value": 40 },
        { "label": "Built-up", "value": 50 },
        { "label": "Bare", "value": 60 },
        { "label": "Snow and ice", "value": 70 },
        { "label": "Permanent water bodies", "value": 80 },
        { "label": "Herbaceous wetland", "value": 90 },
        { "label": "Moss and lichen", "value": 100 }
      ],
      "bandIndex": 8
    }
  ],
  "meta": {
    "description": "The wind power density (w m 2) is a measure of the available wind resource at 100 meters height. Higher wind power density indicates greater wind power potential. Constraints allow the data to be filtered by multiple criteria.",
    "attribution": {
      "text": "ESA GTIF",
      "url": "https://gtif.esa.int/"
    },
    "categories": [],
    "units": "w / m 2",
    "colormaps": [
      {
        "min": 0,
        "max": 2000,
        "steps": 50,
        "name": "jet",
        "reverse": false
      }
    ]
  },
  "layout": {
    "interfaceGroup": "Energy",
    "subinterfaceGroup": "Austria Green Transition",
    "contentLocation": "infoPanel",
    "layerCard": {
      "toggleable": true
    },
    "infoPanel": {
      "legend": {
        "type": "swatch"
      },
      "controls": {
        "opacitySlider": true,
        "zoomToCenter": true,
        "temporalControls": false,
        "constraintSlider": true,
        "blendControls": false
      }
    }
  }
}

Troubleshooting

Symptom	Likely cause
The layer disappears entirely as soon as a constraint is added	The constraint COG does not share the CRS, resolution and origin of the primary data.
No constraint controls appear in the viewer	Constraint slider is off in the layer card controls.
A checkbox is ticked but nothing changes	The value does not match a pixel code in the constraint COG.
A slider covers the wrong range	Min/max were not populated, or were populated from a different band.
Nothing renders with several constraints active	Constraints are combined with AND — the filters may be mutually exclusive.

Did you remember to export?

That's the last of the tutorials — but a good final export never hurts.

Congratulations — you've built a complete Geospatial Explorer configuration from scratch!