The image service uses a mosaic rule to mosaick multiple rasters on the fly. The mosaic rule parameter is used by many image service operations, for example, export image and identify operations.
Referenced by: Image Service Layer (ArcGISImageServiceLayer), Image Service Vector Layer (ArcGISImageServiceVectorLayer)
Properties
| Property | Details |
|---|---|
| ascending | Indicate whether to use ascending or descending order. |
| fids[] | A list that defines a subset of rasters used in the mosaic, be aware that the rasters may not be visible at all scales. |
| itemRenderingRule | The rendering rule applies on items before mosaicking. |
| lockRasterIds[] | Lock a few rasters in the image service. Used together with esriMosaicLockRaster. |
| mosaicMethod | A string value that determines how the selected rasters are ordered. Valid values: esriMosaicAttribute, esriMosaicCenter, esriMosaicLockRaster, esriMosaicNadir, esriMosaicNone, esriMosaicNorthwest, esriMosaicSeamline, esriMosaicViewpoint |
| mosaicOperation | Use the mosaic operation to resolve overlap pixel values: from first or last raster, use the min, max or mean of the pixel values, or blend them. Valid values: MT_BLEND, MT_FIRST, MT_LAST, MT_MAX, MT_MEAN, MT_MIN, MT_SUM |
| multidimensionalDefinition[] | An array of objects representing a slice from multidimensional data or multiple slices that are dynamically mosaicked and processed by the server. The dimensional definitions in this array are used to filter display data based on slices in one or more dimensions. |
| sortField | The field name used together with esriMosaicAttribute method. |
| sortValue | The base sort value used together with esriMosaicAttribute method and sortField parameter. |
| viewpoint | Use a view point along with esriMosaicViewpoint. |
| where | Deprecated. Use layerDefinition.definitionExpression instead. |
Additional information
Mosaic rule in ArcGIS REST API.
mosaicRule Example
{ "id": "Terrain_2295", "layerType": "ArcGISImageServiceLayer", "url": "http://elevation.arcgis.com/arcgis/rest/services/WorldElevation/Terrain/ImageServer", "visibility": true, "bandIds": [], "format": "jpgpng", "compressionQuality": 75, "opacity": 1, "title": "Terrain", "itemId": "58a541efc59545e6b7137f961d7de883", "renderingRule": { "rasterFunction": "Aspect" }, "mosaicRule": { "mosaicMethod": "esriMosaicSeamline", "mosaicOperation": "MT_FIRST" }}