RasterInfo

Property Overview

Property Details

attributeTable FeatureSet

The raster attribute table associated with an imagery layer. It returns categorical mapping of pixel values such as class, group, or category, or membership.

See also:

• Sample - Raster attribute table

• Raster Attribute Table

Example:

layer.when(function() {
  // accesses the raster attribute table of the layer
  let rasterAttributes = layer.serviceRasterInfo.attributeTable.features;
});

bandCount Number

Raster band count.

colormap Number[][]

Raster colormap that can be used to display the imagery layer. Each element in the array defines the pixel value and the red, green, and blue color values.

See also:

• Raster colormap

dataType String

Raster data type controls how the data is rendered by default.

Value	Description
generic	Uses the application defaults for resampling and stretching.
elevation	Applies bilinear resampling and a Min-Max stretch.
thematic	Applies nearest neighbor resampling and a Deviation stretch.
processed	No stretch is applied.
scientific	Uses the blue to red color ramp to display the data.
vector-uv	Uses the U (magnitude component) and V(direction component) components in the vector field renderer.
vector-magdir	Uses the magnitude and direction in the vector field renderer.
standard-time	Uses the blue to red color ramp to display the data --- pixel value represents time encoded using OLEDate.

Possible Values:"generic"|"elevation"|"thematic"|"processed"|"scientific"|"vector-uv"|"vector-u"|"vector-v"|"vector-magdir"|"vector-magnitude"|"vector-direction"|"standard-time"

declaredClass Stringreadonly inherited

The name of the class. The declared class name is formatted as esri.folder.className.

extent Extent

The minimum and maximum X and Y coordinates of a bounding box containing all the raster data.

height Number

Since: ArcGIS API for JavaScript 4.15

Raster height (row count) in pixels.

histograms Object[]

Raster histograms return basic name-value pairs for number of bins, min and max bounding values, counts of pixels in each bin.

See also:

• Raster histograms

keyProperties Object

Raster key properties.

See also:

• Raster key properties

multidimensionalInfo RasterMultidimensionalInfo

Returns the multidimensional information associated with the raster service. If defined, multidimensional information contains various dimensions of data for a particular value, such as time, depth, altitude, etc.

Defining slices of particular dimensions in the ImageryLayer is handled by setting the multidimensionalDefinition parameter on the layer's mosaicRule. To define dimensional slices in ImageryTileLayer and WCSLayer use the multidimensionalDefinition property on respective layers.

See also:

• ImageryLayer.mosaicRule
• ImageryTileLayer.multidimensionalDefinition
• WCSLayer.multidimensionalDefinition

• Sample - Hosted ImageryTileLayer

Example:

// update the statistics of the layer's stretch renderer.
const renderer = layer.renderer.clone();
 const dimensions = layer.rasterInfo.multidimensionalInfo;
// get the salinity variable's statistics
const salinity = dimensions.variables.find((variable) => variable.name === variableName);
renderer.statistics = salinity.statistics;
layer.renderer = renderer;

noDataValue Number|Number[]

Since: ArcGIS API for JavaScript 4.15

The pixel value representing no available information. Can be a number (same value for all bands) or array (specific value for each band).

pixelSize Object

Raster pixel size. Specifies the pixel size being identified on the x and y axis. Defaults to the base resolution of the dataset when not specified.

Properties:

x Number Pixel size along the x axis.

y Number Pixel size along the y axis.

pixelType String

Pixel type for the raster data source.

Value	Range of values that each cell can contain
unknown	Pixel type is unknown
s8	-128 to 127
s16	-32768 to 32767
s32	-2147483648 to 2147483647
u8	0 to 255
u16	0 to 65535
u32	0 to 4294967295
f32	-3.402823466e+38 to 3.402823466e+38
f64	0 to 18446744073709551616

Possible Values:"unknown"|"s8"|"s16"|"s32"|"u8"|"u16"|"u32"|"f32"|"f64"

spatialReference SpatialReference

The spatial reference of the raster.

statistics Object[]

Raster band statistics. These include the minimum value in the raster, maximum value, mean of all values, and standard deviation.

Properties:

min Number The minimum pixel value.

max Number The maximum pixel value.

stddev Number The standard deviation of calculated pixel values.

avg Number The average of calculated pixel values.

width Number

Since: ArcGIS API for JavaScript 4.15

Raster width (column count) in pixels.

Method Overview

Method Details

fromJSON(json){*}static

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Parameter:

json Object A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects.

Returns:

Type	Description
*	Returns a new instance of this class.

toJSON(){Object}

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.

Returns:

Type	Description
Object	The ArcGIS portal JSON representation of an instance of this class.

Type Definitions

RasterMultidimensionalInfo Object

RasterMultidimensionalInfo contains dimensions for each variable in the service describing information about the images collected at multiple times, depths, or heights.

Properties:

variables Object The multi dimensional variables. It stores information such as name, unit and dimensions. For example, a temperature variable can store temperature data and the salinity variable can store the salinity data measured daily at different depths. Specification: name String Variable name. description String optional Variable description. unit String optional Unit of the variable measured in. dimensions Object[] A dimension may be used to represent real physical dimensions such as time or depth/height. It may also be used to represent more abstract quantities such as station id or station-time pair. For example, if your temperature data has a corresponding Date dimension field representing the day it was captured, and your salinity data has a Depth dimension field representing the depth at which it was measured, the Dimensions field for that variable would be Date and Depth. Specification: name String Dimension name. description String optional Dimension description. unit String optional Dimension unit. values Number[]|Number[][] optional An array of single values or tuples [min, max] each defining a range of valid values along the specified dimension. hasRegularIntervals Boolean optional Indicates if the dimension is recorded at regular intervals. interval Number optional Dimension interval. intervalUnit String optional Dimension interval unit. extent Number[] optional The extent of dimension values. statistics RasterBandStatistics[] optional Variable statistics. histograms RasterHistogram[] optional Variable histograms.

Example:

// update the statistics of the layer's stretch renderer.
const renderer = layer.renderer.clone();
 const dimensions = layer.rasterInfo.multidimensionalInfo;
// get the salinity variable's statistics
const salinity = dimensions.variables.find((variable) => variable.name === variableName);
renderer.statistics = salinity.statistics;
layer.renderer = renderer;