API Documentation - Kinetica Docs

Map Initialization

initMap

Function initMap(options) -> {Promise<Map>} Returns A Promise that delivers the Mapbox GL Map when initialized; this is the Mapbox web map object that will be used throughout the rest of the API. Description Initializes a Mapbox web map.

Parameter	Type	Required	Description
`options`	`Object`	Yes	A configuration object for the map
`options.mapDiv`	`String`	Yes	The div ID of the web map container
`options.mapboxgl`	`Object`	Yes	The Mapbox GL object
`options.mapboxKey`	`String`	Yes	The Mapbox API key
`options.kineticaUrl`	`String`	Yes	The URL of the Kinetica REST API
`options.wmsUrl`	`String`	Yes	The URL of the Kinetica WMS endpoint
`options.center`	`Array<Number>`	No	The center point at which the map should initialize
`options.zoom`	`Integer`	No	The Mapbox zoom scale with which to initialize the map
`options.username`	`String`	No	The basic auth username for the Kinetica REST API
`options.password`	`String`	No	The basic auth password for the Kinetica REST API

Example Map centered on Kinetica HQ:

initMap(
    {
        mapDiv : "kineticaHQ",
        mapboxgl : window.mapboxgl,
        mapboxKey : 'abc123',
        kineticaUrl : "http://<db.host>:9191",
        wmsUrl : "http://<db.host>:9191/wms",
        center : [-122.398, 37.793],
        zoom : 15,
        username : "admin",
        password : "admin"
    }
)

WMS Layer

addWmsLayer

Function addWmsLayer(map, options) -> {Promise<Object>} Returns A layer parameters object; useful for testing purposes. Description Adds a WMS raster-styled layer to the Mapbox map.

Parameter	Type	Required	Description
`map`	`Object`	Yes	The Mapbox web map object
`options`	`Object`	Yes	A configuration object for the WMS layer
`options.layerId`	`String`	Yes	A unique identifier of the layer; cannot have the same ID as any other added layer
`options.layerType`	`String`	Yes	The styling used to render the WMS image; options: * `raster` * `cb_raster` * `heatmap` * `contour` * `labels` Can optionally use `options.renderingOptions.layers` in lieu of this property
`options.wmsUrl`	`String`	Yes	The URL of the Kinetica WMS endpoint
`options.tableName`	`String`	Yes	The name of the source table for the layer, containing geospatial data
`options.xAttr`	`String`	Yes (if x,y)	The name of the column containing x values (often longitude)
`options.yAttr`	`String`	Yes (if x,y)	The name of the column containing y values (often latitude)
`options.geoAttr`	`String`	Yes (if WKT)	The name of the column containing WKT values
`options.before`	`String`	No	The layer before (underneath) which to add the new layer; if specified layer ID is not found, the new layer will be added on top of all existing layers
`options.renderingOptions`	`Object`	No	Rendering options that dictate the styling of the WMS layer; see the WMS documentation for the corresponding layer type for examples and default values: * raster * cb_raster * heatmap * contour * labels

Example Raster image of offices from an office table with lat & lon columns for coordinates:

addWmsLayer(
    map,
    {
        wmsUrl : 'http://<db.host>:9191/wms',
        layerId : 'offices',
        layerType : 'raster',
        tableName : 'office',
        xAttr : 'lon',
        yAttr : 'lat',
        renderingOptions :
        {
            POINTCOLORS: 'FF0000',
            POINTSHAPES: 'square',
            POINTSIZES: 4
        }
    }
)

updateWmsLayer

Function updateWmsLayer(map, options) -> {Object} Returns An object containing the map, WMS URL, source name, layer name, query parameters, and the redraw function; useful for testing purposes Description Updates a WMS layer’s parameters with the passed options. Useful for updating WMS output styling parameters based on UI interactions.

Parameter	Type	Required	Description
`map`	`Object`	Yes	The Mapbox web map object
`options`	`Object`	Yes	A configuration object for the WMS layer
`options.layerId`	`String`	Yes	The unique identifier of the layer to update
`options.wmsUrl`	`String`	Yes	The URL of the Kinetica WMS endpoint
`options.renderingOptions`	`Object`	No	Rendering options that dictate the styling of the WMS layer; see the WMS documentation for the corresponding layer type for examples and default values: * raster * cb_raster * heatmap * contour * labels

Example Update raster image of offices, turning each point into a green circle:

updateWmsLayer(
    map,
    {
        layerId : 'offices',
        wmsUrl : 'http://<db.host>:9191/wms',
        renderingOptions :
        {
            POINTCOLORS: '00FF00',
            POINTSHAPES: 'circle',
            POINTSIZES: 3
        }
    }
)

updateWmsLayerType

Function updateWmsLayerType(map, layerId, layerType, debounceLimit) -> {Object} Returns An object containing the redraw function and the debounce limit; useful for testing purposes Description Changes an existing WMS layer’s rendering type and sets all of its parameters to the default values. Useful for changing a layer’s presentation without having to destroy the old layer and create a new one.

Parameter	Type	Required	Description
`map`	`Object`	Yes	The Mapbox web map object
`layerId`	`String`	Yes	The unique identifier of the layer to update
`layerType`	`String`	Yes	The type to which the layer should be updated
`debounceLimit`	`Number`	No	The debounce limit to use as a delay between the end of panend/zoomend events; default is 2000ms

Example Update layer of offices to a heatmap:

updateWmsLayerType(
    map,
    'offices',
    'heatmap',
    1000
)

removeWmsLayer

Function removeWmsLayer(map, layerId) -> {Void} Returns Void Description Removes a WMS layer from the map, based on layer ID; this includes the layer source and event listeners

Parameter	Type	Required	Description
`map`	`Object`	Yes	The Mapbox web map object
`layerId`	`String`	Yes	The unique identifier of the layer to remove

Example Remove offices layer:

removeWmsLayer(
    map,
    'offices'
)

addCbLegend

Function addCbLegend(map, legendTitle, location, cbConfig) -> {Void} Returns Void Description Adds a WMS raster styled layer to the Mapbox map

Parameter	Type	Required	Description
`map`	`Object`	Yes	The Mapbox web map object
`legendTitle`	`String`	Yes	A title to add to the top of the legend
`location`	`String`	Yes	The location of the screen to render; e.g., `top-right`
`cbConfig`	`Object`	Yes	An object containing the class-break configuration values
`cbConfig.cbVals`	`Array<String>`	Yes	An array of class-break specifications to be shown next to the colored legend tokens
`cbConfig.pointColors`	`Array<String>`	Yes	An array of class-break colors to be rendered as tokens next to the class breaks

Example Add a legend to a class break on offices by the number of employees at each; offices of up to 20 employees will be green, between 21 and 40 will be yellow, and 41 or more employees will be shaded red:

addCbLegend(
    map,
    'Offices by Employees',
    'top-right',
    {
        cbVals :
        [
            '0-20',
            '20-40',
            '<other>'
        ],
        pointColors :
        [
            '00FF00',
            'FFFF00',
            'FF0000'
        ]
    }
)

setLayerOpacity

Function setLayerOpacity(map, layerId, opacity) -> {Void} Returns Void Description A helper function to easily set a layer’s opacity

Parameter	Type	Required	Description
`map`	`Object`	Yes	The Mapbox web map object
`layerId`	`String`	Yes	The unique identifier of the layer to modify
`opacity`	`Number`	Yes	The opacity to assign the layer, between `0` and `1`

Example Set opacity of offices layer to 50%:

removeWmsLayer(
    map,
    'offices',
    .5
)

Cluster Layer

addClusterLayer

Function addClusterLayer(map, options) -> {Promise} Returns Returns a promise that resolves with the map, cluster object, update function, and options used to generate the cluster. Useful for testing purposes. Description Adds a geohash cluster visualization layer to the Mapbox map

Parameter	Type	Required	Description
`map`	`Object`	Yes	The Mapbox web map object
`options`	`Object`	Yes	A configuration object for the cluster layer
`options.layerId`	`String`	Yes	A unique identifier for the layer; cannot have the same ID as any other added layer
`options.mapboxgl`	`Object`	Yes	The Mapbox GL object
`options.kineticaUrl`	`String`	Yes	The URL of the Kinetica REST API
`options.tableName`	`String`	Yes	The name of the source table for the layer, containing geospatial data
`options.xAttr`	`String`	Yes	The name of the column containing x values (often longitude)
`options.yAttr`	`String`	Yes	The name of the column containing y values (often latitude)
`options.geohashAttr`	`String`	Yes	The name of the column containing geohashes
`options.precision`	`Integer`	Yes	The geohash precision (number of beginning geohash characters) to use on the initial database groupby of geohashes; cannot exceed the length of any geohash; higher numbers will produce a more granular view at some performance cost
`options.clusterRadius`	`Integer`	No	The visual radius, in pixels, on the map within which to generate clusters; does not impact database performance, only client-side rendering
`options.clusterMaxZoom`	`Integer`	No	The maximum zoom with which clusters can be generated; defaults to `14`
`options.useBbox`	`Boolean`	No	Whether to generate clusters only within the current bounding box or not to restrict the generation area; defaults to `No`; when `Yes`, more granular, high-density clusters tend to be generated
`options.minSize`	`Integer`	No	The minimum visual size of each cluster dot; defaults to `1` pixel
`options.maxSize`	`Integer`	No	The maximum visual size of each cluster dot; defaults to `20` pixels
`options.minColor`	`String`	No	The color of the smallest clusters; defaults to red; a gradient will form between this color and the one in `maxColor`
`options.maxColor`	`String`	No	The color of the largest clusters; defaults to green; a gradient will form between this color and the one specified in `minColor`
`options.dbAggregations`	`Array<String>`	No	An array of custom aggregations to perform at the database level at the specified `precision` of the geohashes; these will be included as properties for the custom client-side aggregations `COUNT(*)` is calculated by default and should not be specified as an aggregate
`options.clientAggregations`	`Array<Object>`	No	An array of custom map/reduce aggregations to perform on the client side, for each cluster displayed at the current zoom level; aggregation configurations should be objects with the following properties: * `key`: name of column (or column alias defined in `dbAggregations` expression) on which to apply the aggregation; this name must be used throughout the map/reduce config * `initial`: initial value of aggregation variable * `map`: optional mapping function on `(key, properties)`, where each value of the column (or column alias defined in `dbAggregations` expressions) can be accessed within the function at `properties.<column>` * `reduce`: reducing function on `(accumulated, properties)` where each mapped value of the column (or column alias defined in `dbAggregations` expressions) can be accessed within the function at `properties.<column>` and accumulated into the value at `accumulated.<column>` See below for an example setup using both database & client-side aggregations

A WKT column is not currently allowed when creating clusters—x/y columns must be used.

Example Clustering of employees from an office_employee table with lat & lon columns for coordinates, each cluster calculating the total of the salaries earned by all employees located at offices within the cluster:

addClusterLayer(
    map,
    {
        layerId : 'office_employees',
        mapboxgl: window.mapboxgl,
        kineticaUrl : 'http://<db.host>:9191',
        tableName : 'office_employee',
        xAttr : 'lon',
        yAttr : 'lat',
        geohashAttr : 'geo_hash',
        precision : 4,
        clusterRadius : 40,
        clusterMaxZoom : 14,
        useBbox : true,
        minSize : 1,
        maxSize : 20,
        minColor : '#FF0000',
        maxColor : '#00FF00',
        dbAggregations :
        [
            'SUM(salary) employeeSalaries'
        ],
        clientAggregations :
        [
            {
                key: 'employeeSalaries',
                initial: 0,
                map: (key, properties) => {
                    return Number(properties.employeeSalaries);
                },
                reduce: (accumulated, properties) => {
                    return accumulated.employeeSalaries + properties.employeeSalaries;
                }
            }
        ]
    }
)

Events

The following events can be acted upon using the Kinetica Kickbox.js Event API

Event Name	Description
`beforeWmsLayerAdded`	Fires just before a WMS layer is added to the map
`afterWmsLayerAdded`	Fires just after a WMS layer has been added to the map
`beforeClusterLayerAdded`	Fires just before a cluster layer is added to the map
`afterClusterLayerAdded`	Fires just after a cluster layer is added to the map
`beforeWmsLayerRemoved`	Fires just before a WMS layer is removed from the map
`afterWmsLayerRemoved`	Fires just after a WMS layer is removed from the map
`beforeWmsSourceRemoved`	Fires just before a WMS layer is removed from the map
`afterWmsSourceRemoved`	Fires just after a WMS layer is removed from the map
`beforeZoomToBounds`	Fires just before zooming to bounds
`afterZoomToBounds`	Fires just after zooming to bounds
`beforeWmsLayerUpdated`	Fires just before a WMS layer is updated
`afterWmsLayerUpdated`	Fires just before a WMS layer is updated

on

Function on(name, cb) -> {Void} Returns Void Description Registers a callback with the given event name; an ID can be specified to allow a subsequent unregister call by ID instead of function signature, which requires storing function references globally

Parameter	Type	Required	Description
`name`	`String`	Yes	The event name with which to register the listener callback
`cb`	`Function`	Yes	The callback to invoke when the event is fired
`cb.kbFnId`	`String`	No	The callback ID to use when unregistering the handler using `offById`

Example Log to console immediately after a WMS layer is added, and assign a callback ID of myCallbackId for subsequent use in turning this event handler off using offById:

var afterWmsLayerUpdatedCb = (e) => { console.log('[' + e.eventName + ']  WMS layer has been updated'); }
afterWmsLayerUpdatedCb.kbFnId = 'myCallbackId';

on(
    'afterWmsLayerUpdated',
    afterWmsLayerUpdatedCb
)

off

Function off(name, cb) -> {Void} Returns Void Description Unregisters a callback with the given event name and callback function

Parameter	Type	Required	Description
`name`	`String`	Yes	The event name from which to unregister the listener callback
`cb`	`Function`	Yes	The callback function to unregister

Example Stop calling afterWmsLayerUpdateCb when afterWmsLayerUpdated events occur:

off(
    'afterWmsLayerUpdated',
    afterWmsLayerUpdateCb
)

As noted in on, the callback function reference passed in here must be the same reference passed to the on function

offById

Function offById(name, cbId) -> {Void} Returns Void Description Unregisters a callback that has a kbFnId property equal to the specified cbId

Parameter	Type	Required	Description
`name`	`String`	Yes	The event name from which to unregister the listener callback
`cbId`	`String`	Yes	The ID of the callback function to unregister

Example Stop calling the callback function with an ID of myCallbackId when afterWmsLayerUpdated events occur:

offById(
    'afterWmsLayerUpdated',
    'myCallbackId'
)

This ID must match the one assigned to the callback function before calling the on function

trigger

Function trigger(name) -> {Void} Returns Void Description Triggers a Kinetica Kickbox.js event for all listeners of the event with the specified name

Parameter	Type	Required	Description
`name`	`String`	Yes	The name of the event to trigger

Example Fire the afterWmsLayerUpdated event, triggering all listeners for that event to invoke their respective callback functions:

trigger('afterWmsLayerUpdated')

Identify Modes

enableIdentifyByRadiusMode

Function enableIdentifyByRadiusMode(map, options) -> {Void} Returns Void Description Enables the identify-by-radius mode on a specified layer, after first disabling any currently active identify mode

Parameter	Type	Required	Description
`map`	`Object`	Yes	The Mapbox web map object
`options`	`Object`	Yes	An object containing the identify-by-radius mode configuration values
`options.layerId`	`String`	Yes	The unique identifier of the layer on which to enable identify-by-radius mode
`options.mapboxgl`	`Object`	Yes	The Mapbox GL object
`options.MapboxDraw`	`Object`	Yes	The Mapbox GL Draw object
`options.kineticaUrl`	`String`	Yes	The URL of the Kinetica REST API
`options.tableName`	`String`	Yes	The name of the source table for the layer, containing geospatial data
`options.xAttr`	`String`	Yes (if x,y)	The name of the column containing x values (often longitude)
`options.yAttr`	`String`	Yes (if x,y)	The name of the column containing y values (often latitude)
`options.geoAttr`	`String`	Yes (if WKT)	The name of the column containing WKT values
`options.transformations`	`Array<Object>`	No	An array of objects that contain two properties: * `condition` - a function to determine whether a given record should be transformed * `transformation` - a function that performs a transformation on a given record

The Mapbox GL and Mapbox GL Draw objects require a separate install from Kinetica Kickbox.js

Example Enable geospatial filtering of data via click-and-drag of a circle on the offices map layer, prefixing hex values in the color_code column with a #:

enableIdentifyByRadiusMode
(
    {
        layerId : 'offices',
        mapboxgl : window.mapboxgl,
        MapboxDraw : window.MapboxDraw,
        kineticaUrl : "http://<db.host>:9191",
        tableName : 'office',
        xAttr : 'lon',
        yAttr : 'lat',
        transformations :
        [
            {
                condition: (columnName, columnType) => { return columnName === 'color_code'; },
                transformation: (record, columnName) =>
                {
                    record[columnName] = '#' + record[columnName];
                    return record;
                }
            }
        ]
    }
)

enableIdentifyByPointMode

Function enableIdentifyByPointMode(map) -> {Void} Returns Void Description Enables the identify-by-point mode on a specified layer, after first disabling any currently active identify mode

Parameter	Type	Required	Description
`map`	`Object`	Yes	The Mapbox web map object
`options`	`Object`	Yes	An object containing the identify-by-point mode configuration values
`options.layerId`	`String`	Yes	The unique identifier of the layer on which to enable identify-by-point mode
`options.mapboxgl`	`Object`	Yes	The Mapbox GL object
`options.MapboxDraw`	`Object`	Yes	The Mapbox GL Draw object
`options.kineticaUrl`	`String`	Yes	The URL of the Kinetica REST API
`options.tableName`	`String`	Yes	The name of the source table for the layer, containing geospatial data
`options.xAttr`	`String`	Yes (if x,y)	The name of the column containing x values (often longitude)
`options.yAttr`	`String`	Yes (if x,y)	The name of the column containing y values (often latitude)
`options.geoAttr`	`String`	Yes (if WKT)	The name of the column containing WKT values
`options.radiusInMeters`	`Number`	Yes	The radius (in meters) around the clicked point to use as the search area
`options.transformations`	`Array<Object>`	No	An array of objects that contain two properties: * `condition` - a function to determine whether a given record should be transformed * `transformation` - a function that performs a transformation on a given record

The Mapbox GL and Mapbox GL Draw objects require a separate install from Kinetica Kickbox.js

Example Enable geospatial filtering of data via click of a point on the offices map layer and applying a 200m fixed radius to determine the filtered area, prefixing hex values in the color_code column with a #:

enableIdentifyByPointMode
(
    {
        layerId : 'offices',
        mapboxgl : window.mapboxgl,
        MapboxDraw : window.MapboxDraw,
        kineticaUrl : "http://<db.host>:9191",
        tableName : 'office',
        xAttr : 'lon',
        yAttr : 'lat',
        radiusInMeters : 200,
        transformations :
        [
            {
                condition: (columnName, columnType) => { return columnName === 'color_code'; },
                transformation: (record, columnName) =>
                {
                    record[columnName] = '#' + record[columnName];
                    return record;
                }
            }
        ]
    }
)

disableIdentifyMode

Function disableIdentifyMode(map) -> {Void} Returns Void Description Disables the currently active identify-by-radius or identify-by-point mode and unregisters all callbacks driving the user interaction with this mode

Parameter	Type	Required	Description
`map`	`Object`	Yes	The Mapbox web map object

Example Disable any active identify mode:

disableIdentifyMode(map)

​Map Initialization

​initMap

​WMS Layer

​addWmsLayer

​updateWmsLayer

​updateWmsLayerType

​removeWmsLayer

​addCbLegend

​setLayerOpacity

​Cluster Layer

​addClusterLayer

​Events

​on

​off

​offById

​trigger

​Identify Modes

​enableIdentifyByRadiusMode

​enableIdentifyByPointMode

​disableIdentifyMode

Map Initialization

initMap

WMS Layer

addWmsLayer

updateWmsLayer

updateWmsLayerType

removeWmsLayer

addCbLegend

setLayerOpacity

Cluster Layer

addClusterLayer

Events

on

off

offById

trigger

Identify Modes

enableIdentifyByRadiusMode

enableIdentifyByPointMode

disableIdentifyMode