EncLayer class final
A layer that displays ENC data.
Electronic navigational charts (ENC) are georeferenced vector datasets for the visualization and analysis of hydrographic and maritime information. This API supports ENC that conform to the International Hydrographic Organization (IHO) S-57 standard.
Functional characteristics
ENC layer supports identify and selection but does not support query or time. ENC layers cannot be displayed in a scene.
Performance characteristics
ENC layers differ from other layer types in that ENC content is cached in an internal collection of SENC files. When an ENC layer is displayed, only the content in the SENC files is referenced. SENC files are produced when an ENC cell is read for the first time and updated as update sets are applied. You can set the path to the SENC storage directory with the EncEnvironmentSettings.sencDataUri property. SENC files are in a binary format that is not intended to be shared between platforms or versions of this API.
Constructors
Properties
- attribution → String
-
The attribution text for the layer.
no setterinherited
- canChangeVisibility → bool
-
A flag indicating whether the layer content's visibility can be changed.
no setterinherited
- cell → EncCell
-
Returns the ENC cell object associated with the ENC layer.
no setter
- description ↔ String
-
The description for the layer.
getter/setter pairinherited
- fullExtent → Envelope?
-
The full extent of this layer, which is the extent where all layer data is
contained.
no setterinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- id ↔ String
-
The unique identifying string for the layer, as specified in a map or
scene.
getter/setter pairinherited
- isIdentifyEnabled → bool
-
True if the layer supports identify, false otherwise.
no setterinherited
- isVisible ↔ bool
-
The layer content's visibility.
getter/setter pairinherited
- item → Item?
-
The item the layer has been created from.
no setterinherited
- loadError → ArcGISException?
-
The load error.
no setterinherited
- loadStatus → LoadStatus
-
The load status.
no setterinherited
- maxScale ↔ double
-
The maximum scale for the layer.
getter/setter pairinherited
- minScale ↔ double
-
The minimum scale for the layer.
getter/setter pairinherited
- name ↔ String
-
The layer content's name.
getter/setter pairinherited
-
onLoadStatusChanged
→ Stream<
LoadStatus> -
A stream that reports changes to the LoadStatus.
no setterinherited
-
onSubLayerContentChanged
→ Stream<
List< LayerContent> > -
Callback invoked when the sublayer content of the layer content have
changed.
no setterinherited
-
onVisibilityChanged
→ Stream<
bool> -
Callback invoked when the visibility of the layer changes.
no setterinherited
- opacity ↔ double
-
The opacity for the layer.
getter/setter pairinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- showInLegend ↔ bool
-
A flag indicating whether the layer content participates in the legend.
getter/setter pairinherited
- spatialReference → SpatialReference?
-
The spatial reference of the layer.
no setterinherited
-
subLayerContents
→ List<
LayerContent> -
The sub layer contents of a layer content.
no setterinherited
Methods
-
cancelLoad(
) → void -
Cancels loading metadata for the object.
inherited
-
clearSelection(
) → void - Clears / Unselects a previously selected ENC feature (if any).
-
clone(
) → Layer -
Clones this instance of the layer and its members.
inherited
-
fetchLegendInfos(
) → Future< List< LegendInfo> > -
Fetches the list of legend info.
inherited
-
isVisibleAtScale(
double scale) → bool -
Returns the layer content's effective visibility at the specified scale.
inherited
-
load(
) → Future< void> -
Loads the metadata for the object asynchronously.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
retryLoad(
) → Future< void> -
Loads or retries loading metadata for the object asynchronously.
inherited
-
selectFeature(
EncFeature encFeature) → void - Selects an ENC feature.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
getEnvironmentSettings(
) → EncEnvironmentSettings - Returns the ENCEnvironmentSettings object.