import FixedIntervalBinParameters from "@arcgis/core/rest/support/FixedIntervalBinParameters.js";const FixedIntervalBinParameters = await $arcgis.import("@arcgis/core/rest/support/FixedIntervalBinParameters.js");- Inheritance:
- FixedIntervalBinParameters→
BinParametersBase→ Accessor
- Since
- ArcGIS Maps SDK for JavaScript 4.32
FixedIntervalBinParameters specifies AttributeBinsQuery.binParameters on AttributeBinsQuery object.
For the FixedIntervalBinParameters, the number of bins is not important but the interval
size must match with the input data. This means that each bin will cover a range that exactly fits the specified interval. The fixed interval binning works with numeric
fields and fields of the date type only. It does not support timestamp-offset, date-only, or time-only field types.
For example, if you want to visualize the distribution temperature data in a specific area using fixed intervals of 5 degrees, you can use fixed interval bins to categorize the data effectively:
// Query bins with fixed interval bin parameters based on field "temp" with 5 degrees interval.const binQuery = new AttributeBinsQuery({ binParameters: new FixedIntervalBinParameters({ interval: 5, // the interval size for each bin. In this case, 5 degrees celsius field: "temp", // the field to bin, containing the temperature data start: 0, // the lower boundary of the first bin. 0 degrees celsius end: 30 // the upper boundary of the last bin. 30 degrees celsius })});
Temperature ranges at sea level for each Ecological Marine Units (EMU) in 2018 are depicted, with each bin representing a 5-degree Celsius interval. The chart is based on the results of the binQuery illustrated above.
- See also
Constructors
Constructor
Parameters
| Parameter | Type | Description | Required |
|---|---|---|---|
| properties | | |
Properties
| Property | Type | Class |
|---|---|---|
declaredClass readonly inherited | ||
| | ||
expression inherited | ||
expressionValueType inherited | ||
field inherited | ||
firstDayOfWeek inherited | ||
hideUpperBound inherited | ||
| | ||
normalizationField inherited | ||
normalizationMaxValue inherited | ||
normalizationMinValue inherited | ||
normalizationTotal inherited | ||
normalizationType inherited | ||
splitBy inherited | ||
stackBy inherited | ||
| | ||
type readonly | "fixed-interval" | |
expression
A standardized SQL expression used to calculate the bins, rather than referencing a field. The specified SQL expression must evaluate to a numeric or date type.
Both field and the expression cannot be specified for the same bin. The expressionValueType property must be set to the expected data type
of the output from the expression.
- See also
Example
const binQuery = new AttributeBinsQuery({ binParameters: new AutoIntervalBinParameters({ numBins: 5, // the interval size for each bin // sql expression to calculate the bins based on the product of Quantity and SalesAmount expression: "Quantity * SalesAmount" expressionValueType: "double" })}); expressionValueType
- Type
- BinParameterFieldType | null | undefined
Specifies the expected data type of the output from the expression, based on the type of value the expression generates. The expression property must be set when this property is set.
- See also
Example
const binQuery = new AttributeBinsQuery({ binParameters: new AutoIntervalBinParameters({ numBins: 5, // the interval size for each bin // sql expression to calculate the bins based on the product of Quantity and SalesAmount expression: "Quantity * SalesAmount" expressionValueType: "double" })}); field
The field name used to calculate the bins. The expression property cannot be set when this property is set.
- See also
firstDayOfWeek
The first day of the week. This property is used to determine the start of the week for date-based bins. The default value is 7, representing Sunday, if no value is specified.
hideUpperBound
If true, the upperBoundary and bin fields will not be included in the attributes.
interval
- Type
- number
Represents the interval of values to be included in each bin. For example, if you want to visualize the distribution temperature data in a specific area using fixed intervals of 5 degrees, you can set the interval to 5.
normalizationField
Name of the numeric field used to normalize values during binning. The normalization field must be specified when the
normalizationType is set to field. Only non-zero values from the normalizationField are used during binning.
normalizationMaxValue
The maximum value used to normalize the data during binning. It ensures that all data points are scaled relative to this maximum value.
Known Limitations
The normalizationMaxValue is only supported with server-side FeatureLayers.
normalizationMinValue
The minimum value used to normalize the data during binning. It ensures that all data points are scaled relative to this minimum value.
Known Limitations
The normalizationMinValue is only supported with server-side FeatureLayers.
normalizationTotal
The total value used when the normalizationType is percent-of-total. Percent of total takes each data value, divides it by the normalizationTotal of all values,
and then multiplies by 100 to turn it into a percentage.
normalizationType
- Type
- NormalizationType | null | undefined
Normalization type used to normalize data during binning. Some analytical methods require that data be normally distributed. When the data is skewed (the distribution is lopsided) you can transform the data to make it normal.
The following normalization types are supported:
| Value | Description |
|---|---|
| natural-log | Natural logarithmic transformation can be used when the data has a positively skewed distribution and there are a few large values. If these large values are located in the dataset, the log transformation will help make the variances more constant and normalize the data. |
| log | The logarithmic transformation (base 10) is similar to the natural logarithmic transformation. It is used to reduce skewness, particularly in datasets with large values. |
| square-root | Square root transformation is similar to a logarithmic transformation in that it reduces right skewness of a dataset. Unlike logarithmic transformations, square root transformations can be applied to zero. |
| percent-of-total | Percent of total takes each data value, divides it by the normalizationTotal of all values, and then multiplies by 100 to turn it into a percentage. If you don’t provide a normalizationTotal, it will be calculated automatically. |
| field | Divides the data value by the value from the specified field. You must provide the normalizationField, and values of 0 are filtered out. |
splitBy
- Type
- AttributeBinsGrouping | null | undefined
The splitBy parameter divides data into separate bins for each unique value in the categorical field. Each category will have different bin boundaries based on the data distribution within that category.
For example, when analyzing sales by region (e.g., Central, Northeast, etc.), splitBy will create separate bin ranges for each region, allowing the boundaries to adjust to the specific data distribution of each region.
The splitBy parameter is useful when the distribution of values within each category (e.g., branch or region) differs significantly, and you want each category’s binning to reflect its unique data range.
Field with many unique values are not appropriate for splitting bins into multiple series.
Example
// create bins based on the SalesTotal field, split by the Branch field.const binQuery = new AttributeBinsQuery({ binParameters: new AutoIntervalBinParameters({ numBins: 5, // the interval size for each bin field: "SalesTotal", splitBy: { // autocasts to AttributeBinsGrouping type: "field", value: "Branch" } })});const result = await layer.queryAttributeBins(binQuery); stackBy
- Type
- AttributeBinsGrouping | null | undefined
The stackBy parameter divides each bin into segments based on unique values from a categorical field, allowing you to compare multiple categories within the same bin
while keeping the bin boundaries consistent across all categories. This enables you to visualize or analyze the distribution of categories stacked together within the same range of values.
For example, with 3 bins based on total sales with ranges like $0 to $5000, $5001 to $10,000, and $10,001 to $15,000, setting stackBy = SalesRep will stack each sales rep's contribution
within the same bin range. The bin boundaries remain the same, and each segment within the bin shows how individual categories contribute to the total frequency or value.
Field with many unique values are not appropriate for splitting bins into multiple series.
Example
// create bins based on the SalesTotal field, stacked by the Month field.const binQuery = new AttributeBinsQuery({ binParameters: new AutoIntervalBinParameters({ numBins: 5, // the interval size for each bin field: "SalesTotal", stackBy: { value: "EXTRACT(MONTH from invoiceDate)", type: "expression", valueType: "double", alias: "Month" } })});const result = await layer.queryAttributeBins(binQuery);Methods
fromJSON
- Signature
-
fromJSON (json: any): any
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.
Parameters
| Parameter | Type | Description | Required |
|---|---|---|---|
| json | 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
- any
Returns a new instance of this class.
clone
- Signature
-
clone (): this
Creates a deep clone of this object. Any properties that store values by reference will be assigned copies of the referenced values on the cloned instance.
- Returns
- this
A deep clone of the class instance that invoked this method.
toJSON
- Signature
-
toJSON (): any
Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.
- Returns
- any
The ArcGIS portal JSON representation of an instance of this class.