-
Name Type Description auth
AuthConfig | string | undefined The authentication configuration with
clientId
andclientSecret
or an access token. See Sentinel Hub authentication for details. If not provided in the constructor, the source will not be rendered untilsetAuth
is called.data
Array<ProcessRequestInputDataItem> | undefined The input data configuration. If not provided in the constructor, the source will not be rendered until
setData
is called.evalscript
Evalscript | string | undefined The process applied to the input data. If not provided in the constructor, the source will not be rendered until
setEvalscript
is called. See thesetEvalscript
documentation for details on the restrictions when passing process functions.tileSize
number | Size (defaults to [512, 512]) The pixel width and height of the source tiles.
url
string (defaults to 'https://services.sentinel-hub.com/api/v1/process') The Sentinel Hub Processing API URL.
projection
ProjectionLike | undefined Projection. Default is the view projection.
attributionsCollapsible
boolean (defaults to true) Allow the attributions to be collapsed.
interpolate
boolean (defaults to true) Use interpolated values when resampling. By default, linear interpolation is used when resampling. Set to false to use the nearest neighbor instead.
wrapX
boolean (defaults to true) Wrap the world horizontally.
transition
number | undefined Duration of the opacity transition for rendering. To disable the opacity transition, pass
transition: 0
.Fires:
-
change
(BaseEvent) - Generic change event. Triggered when the revision counter is increased. -
error
(BaseEvent) - Generic error event. Triggered when an error occurs. -
propertychange
(ObjectEvent) - Triggered when a property is changed. -
tileloadend
(TileSourceEvent) - Triggered when a tile finishes loading, either when its data is loaded, or when loading was aborted because the tile is no longer needed. -
tileloaderror
(TileSourceEvent) - Triggered if tile loading results in an error. Note that this is not the right place to re-fetch tiles. Seeload
for details. -
tileloadstart
(TileSourceEvent) - Triggered when a tile starts loading.
-
Extends
Methods
-
Increases the revision counter and dispatches a 'change' event.
-
Remove all cached reprojected tiles from the source. The next render cycle will create new tiles.
-
Dispatches an event and calls all listeners listening for events of this type. The event parameter can either be a string or an Object with a
type
property.Name Type Description event
BaseEvent | string Event object.
Returns:
false
if anyone called preventDefault on the event object or if any of the listeners returned false.
-
Gets a value.
Name Type Description key
string Key name.
Returns:
Value.
-
Get the attribution function for the source.
Returns:
Attribution function.
-
Returns:
Attributions are collapsible.
-
When the source state is
error
, use this function to get more information about the error. To debug a faulty configuration, you may want to use a listener like this:source.on('change', () => { if (source.getState() === 'error') { console.error(source.getError()); } });
Returns:
A source loading error.
-
Get a list of object property names.
Returns:
List of property names.
-
Get the projection of the source.
Returns:
Projection.
-
Get an object of all property names and values.
Returns:
Object.
-
Get the version number for this object. Each time the object is modified, its version number will be incremented.
Returns:
Revision.
-
Get the state of the source, see
State
for possible states.Returns:
State.
-
Return the tile grid of the tile source.
Returns:
Tile grid.
-
Listen for a certain type of event.
Name Type Description type
string | Array.<string> The event type or array of event types.
listener
function The listener function.
Returns:
Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.
-
Listen once for a certain type of event.
Name Type Description type
string | Array.<string> The event type or array of event types.
listener
function The listener function.
Returns:
Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.
-
Sets a value.
Name Type Description key
string Key name.
value
* Value.
silent
boolean | undefined Update without triggering an event.
-
Set the attributions of the source.
Name Type Description attributions
AttributionLike | undefined Attributions. Can be passed as
string
,Array<string>
,Attribution
, orundefined
. -
Set the authentication configuration for the source (if not provided in the constructor). If an object with
clientId
andclientSecret
is provided, an access token will be fetched and used with processing requests. Alternatively, an access token can be supplied directly.Name Type Description auth
The auth config or access token.
Name Type Description tokenUrl
string (defaults to 'https://services.sentinel-hub.com/auth/realms/main/protocol/openid-connect/token') The URL to get the authentication token.
clientId
string The client ID.
clientSecret
string The client secret.
-
Set or update the input data used.
Name Type Description data
Array<ProcessRequestInputDataItem> The input data configuration.
-
Set or update the Evalscript used to process the data. Either a process object or a string Evalscript can be provided. If a process object is provided, it will be serialized to produce the Evalscript string. Because these functions will be serialized and executed by the Processing API, they cannot refer to other variables or functions that are not provided by the Processing API context.
Name Type Description evalscript
The process to apply to the input data.
Name Type Description setup
Setup The setup function.
evaluatePixel
EvaluatePixel The function to transform input samples into output values.
updateOutput
UpdateOutput | undefined Optional function to adjust the output bands.
updateOutputMetadata
UpdateOutputMetadata | undefined Optional function to update the output metadata.
preProcessScenes
Collections | undefined Optional function called before processing.
version
string (defaults to '3') The Evalscript version.
-
Sets a collection of key-value pairs. Note that this changes any existing properties and adds new ones (it does not remove any existing properties).
Name Type Description values
Object.<string, *> Values.
silent
boolean | undefined Update without triggering an event.
-
Sets the tile grid to use when reprojecting the tiles to the given projection instead of the default tile grid for the projection.
This can be useful when the default tile grid cannot be created (e.g. projection has no extent defined) or for optimization reasons (custom tile size, resolutions, ...).
Name Type Description projection
ProjectionLike Projection.
tilegrid
TileGrid Tile grid to use for the projection.
-
Unlisten for a certain type of event.
Name Type Description type
string | Array.<string> The event type or array of event types.
listener
function The listener function.
-
Unsets a property.
Name Type Description key
string Key name.
silent
boolean | undefined Unset without triggering an event.