schema changes

Author: smohiudd

README.md

@@ -2,7 +2,7 @@
 
 - **Title:** Rendering
 - **Identifier:** <https://stac-extensions.github.io/render/v1.0.0/schema.json>
-- **Field Name Prefix:** rdr
+- **Field Name Prefix:** renders
 - **Scope:** Item, Collection
 - **Extension [Maturity Classification](https://github.com/radiantearth/stac-spec/tree/master/extensions/README.md#extension-maturity):** Proposal
 - **Owner**: @emmanuelmathot @abarciauskas-bgse @smohiudd
@@ -113,8 +113,7 @@ by simply specifying the `url` and `assets` query parameters.
 | `colormap`      | `colormap`                             | Color map JSON definition as defined in `colormap` object of the `asset` (overrides `colormap_name` if present )                    |
 | `color_formula` | `color_formula`                        | Color formula as defined in `color_formula` field of the `asset`                                                                    |
 | `resampling`    | `resampling`                           | Resampling method to use when reprojecting the raster.                                                                              |
-
-Next sections describe some examples of titiler integration.
+| `bidx`    | `bidx`                           | Dataset band indexes                                                                            |
 
 #### Shortwave Infra-red visual thermal signature example
 

json-schema/schema.json

@@ -107,7 +107,8 @@
         {"type": "object", "required": ["color_formula"]},
         {"type": "object", "required": ["resampling"]},
         {"type": "object", "required": ["expression"]},
-        {"type": "object", "required": ["minmax_zoom"]}
+        {"type": "object", "required": ["minmax_zoom"]},
+        {"type": "object", "required": ["bidx"]}
       ]
     },
     "fields": {
@@ -136,7 +137,7 @@
           }
         },
         "nodata": {
-          "type": "number"
+          "type": ["number","string"]
         },
         "colormap_name": {
           "type": "string"
@@ -158,6 +159,12 @@
           "items": {
             "type": "number"
           }
+        },
+        "bidx":{
+          "type": "array",
+          "items": {
+            "type": "number"
+          }
         }
       },
       "additionalProperties": true