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This document explains the eodash STAC Extension to the [SpatioTemporal Asset Catalog](https://github.com/radiantearth/stac-spec) (STAC) specification
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The extension provides a set of properties to enrich STAC Collections and Items with metadata necessary for the [eodash](https://github.com/eodash/eodash) visualization client.
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- Support for custom map projections.
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- Application of custom color legends, and dynamic user-configurable styling.
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For more extensions and concepts not covered by this extension specification and needed by eodash, refer to **[eodash STAC Documentation](https://github.com/eodash/eodash/blob/main/docs/STAC.md)**.
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For more extensions and concepts not covered by this extension specification and needed by eodash, refer to **[eodash STAC Documentation](https://eodash.github.io/eodash/STAC.html)**.
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- Examples:
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-[Item example](examples/item.json): Shows the basic usage of the extension in a STAC Item
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| :---- | :---- | :---- |
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| eodash:mapProjection|[Projection Object](#projection-object)| Defines a custom map projection that the client can register and use for displaying data. This is essential for visualizing data in non-standard coordinate reference systems (e.g., polar stereographic). |
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| eodash:jsonform| string | A URL pointing to a JSON Schema file. eodash uses this schema to dynamically generate a user interface form, allowing users to input parameters for data processing services. |
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| eodash:rasterform| string | A URL pointing to a JSON Schema and legend configuration file. eodash uses this schema to dynamically generate a user interface form, allowing users to change tile URLs parameters |
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| eodash:vegadefinition| string | A URL pointing to a [Vega](https://vega.github.io/vega/) or [Vega-Lite](https://vega.github.io/vega-lite/) JSON definition. eodash uses this to render charts from data returned by a service. |
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| eox:colorlegend|[Color Legend Object](#color-legend-object)| Defines a custom color legend for client-side styling of rendered data |
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-**[Web Map Links Extension](https://github.com/stac-extensions/web-map-links)**: For map service links (WMS, WMTS, XYZ) with additional properties like `endpoint`, `method`, and `wmts:layer`
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-**[Render Extension](https://github.com/stac-extensions/render)**: For visualization and styling metadata
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For additional metadata properties used by eodash (such as `locations`, service configuration, and observation point handling), see the [eodash STAC documentation](https://github.com/eodash/eodash/blob/main/docs/STAC.md).
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For additional metadata properties used by eodash (such as `locations`, service configuration, and observation point handling), see the [eodash STAC documentation](https://eodash.github.io/eodash/STAC.html).
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