LogoLogo
HomeAcademyLoginTry for free
  • Welcome
  • What's new
    • Q2 2025
    • Q1 2025
    • Q4 2024
    • Q3 2024
    • Q2 2024
    • Q1 2024
    • Q4 2023
    • Q3 2023
    • Q2 2023
    • Q1 2023
    • Q4 2022
    • Q3 2022
  • FAQs
    • Accounts
    • Migration to the new platform
    • User & organization setup
    • General
    • Builder
    • Workflows
    • Data Observatory
    • Analytics Toolbox
    • Development Tools
    • Deployment Options
    • CARTO Basemaps
    • CARTO for Education
    • Support Packages
    • Security and Compliance
  • Getting started
    • What is CARTO?
    • Quickstart guides
      • Connecting to your data
      • Creating your first map
      • Creating your first workflow
      • Developing your first application
    • CARTO Academy
  • CARTO User Manual
    • Overview
      • Creating your CARTO organization
      • CARTO Cloud Regions
      • CARTO Workspace overview
    • Maps
      • Data sources
        • Simple features
        • Spatial Indexes
        • Pre-generated tilesets
        • Rasters
        • Defining source spatial data
        • Managing data freshness
        • Changing data source location
      • Layers
        • Point
          • Grid point aggregation
          • H3 point aggregation
          • Heatmap point aggregation
          • Cluster point aggregation
        • Polygon
        • Line
        • Grid
        • H3
        • Raster
        • Zoom to layer
      • Widgets
        • Formula widget
        • Category widget
        • Pie widget
        • Histogram widget
        • Range widget
        • Time Series widget
        • Table widget
      • SQL Parameters
        • Date parameter
        • Text parameter
        • Numeric parameter
        • Publishing SQL parameters
      • Interactions
      • Legend
      • Basemaps
        • Basemap selector
      • AI Agents
      • SQL analyses
      • Map view modes
      • Map description
      • Feature selection tool
      • Search locations
      • Measure distances
      • Exporting data
      • Download PDF reports
      • Managing maps
      • Sharing and collaboration
        • Editor collaboration
        • Map preview for editors
        • Map settings for viewers
        • Comments
        • Embedding maps
        • URL parameters
      • Performance considerations
    • Workflows
      • Workflow canvas
      • Results panel
      • Components
        • Aggregation
        • Custom
        • Data Enrichment
        • Data Preparation
        • Generative AI
        • Input / Output
        • Joins
        • Parsers
        • Raster Operations
        • Spatial Accessors
        • Spatial Analysis
        • Spatial Constructors
        • Spatial Indexes
        • Spatial Operations
        • Statistics
        • Tileset Creation
        • BigQuery ML
        • Snowflake ML
        • Google Earth Engine
        • Google Environment APIs
        • Telco Signal Propagation Models
      • Data Sources
      • Scheduling workflows
      • Sharing workflows
      • Using variables in workflows
      • Executing workflows via API
      • Temporary data in Workflows
      • Extension Packages
      • Managing workflows
      • Workflows best practices
    • Data Explorer
      • Creating a map from your data
      • Importing data
        • Importing rasters
      • Geocoding data
      • Optimizing your data
    • Data Observatory
      • Terminology
      • Browsing the Spatial Data Catalog
      • Subscribing to public and premium datasets
      • Accessing free data samples
      • Managing your subscriptions
      • Accessing your subscriptions from your data warehouse
        • Access data in BigQuery
        • Access data in Snowflake
        • Access data in Databricks
        • Access data in Redshift
        • Access data in PostgreSQL
    • Connections
      • Google BigQuery
      • Snowflake
      • Databricks
      • Amazon Redshift
      • PostgreSQL
      • CARTO Data Warehouse
      • Sharing connections
      • Deleting a connection
      • Required permissions
      • IP whitelisting
      • Customer data responsibilities
    • Applications
    • Settings
      • Understanding your organization quotas
      • Activity Data
        • Activity Data Reference
        • Activity Data Examples
        • Activity Data Changelog
      • Users and Groups
        • Inviting users to your organization
        • Managing user roles
        • Deleting users
        • SSO
        • Groups
        • Mapping groups to user roles
      • CARTO Support Access
      • Customizations
        • Customizing appearance and branding
        • Configuring custom color palettes
        • Configuring your organization basemaps
        • Enabling AI Agents
      • Advanced Settings
        • Managing applications
        • Configuring S3 Bucket for Redshift Imports
        • Configuring OAuth connections to Snowflake
        • Configuring OAuth U2M connections to Databricks
        • Configuring S3 Bucket integration for RDS for PostgreSQL Exports in Builder
        • Configuring Workload Identity Federation for BigQuery
      • Data Observatory
      • Deleting your organization
    • Developers
      • Managing Credentials
        • API Base URL
        • API Access Tokens
        • SPA OAuth Clients
        • M2M OAuth Clients
      • Named Sources
  • Data and Analysis
    • Analytics Toolbox Overview
    • Analytics Toolbox for BigQuery
      • Getting access
        • Projects maintained by CARTO in different BigQuery regions
        • Manual installation in your own project
        • Installation in a Google Cloud VPC
        • Core module
      • Key concepts
        • Tilesets
        • Spatial indexes
      • SQL Reference
        • accessors
        • clustering
        • constructors
        • cpg
        • data
        • http_request
        • import
        • geohash
        • h3
        • lds
        • measurements
        • placekey
        • processing
        • quadbin
        • random
        • raster
        • retail
        • routing
        • s2
        • statistics
        • telco
        • tiler
        • transformations
      • Guides
        • Running queries from Builder
        • Working with Raster data
      • Release notes
      • About Analytics Toolbox regions
    • Analytics Toolbox for Snowflake
      • Getting access
        • Native App from Snowflake's Marketplace
        • Manual installation
      • Key concepts
        • Spatial indexes
        • Tilesets
      • SQL Reference
        • accessors
        • clustering
        • constructors
        • data
        • http_request
        • import
        • h3
        • lds
        • measurements
        • placekey
        • processing
        • quadbin
        • random
        • raster
        • retail
        • s2
        • statistics
        • tiler
        • transformations
      • Guides
        • Running queries from Builder
        • Working with Raster data
      • Release Notes
    • Analytics Toolbox for Databricks
      • Getting access
        • Personal (former Single User) cluster
        • Standard (former Shared) cluster
      • Reference
        • lds
        • tiler
      • Guides
      • Release Notes
    • Analytics Toolbox for Redshift
      • Getting access
        • Manual installation in your database
        • Installation in an Amazon Web Services VPC
        • Core version
      • Key concepts
        • Tilesets
        • Spatial indexes
      • SQL Reference
        • clustering
        • constructors
        • data
        • http_request
        • import
        • lds
        • placekey
        • processing
        • quadbin
        • random
        • s2
        • statistics
        • tiler
        • transformations
      • Guides
        • Running queries from Builder
      • Release Notes
    • Analytics Toolbox for PostgreSQL
      • Getting access
        • Manual installation
        • Core version
      • Key concepts
        • Tilesets
        • Spatial Indexes
      • SQL Reference
        • h3
        • quadbin
        • tiler
      • Guides
        • Creating spatial index tilesets
        • Running queries from Builder
      • Release Notes
    • CARTO + Python
      • Installation
      • Authentication Methods
      • Visualizing Data
      • Working with Data
        • How to work with your data in the CARTO Data Warehouse
        • How to access your Data Observatory subscriptions
        • How to access CARTO's Analytics Toolbox for BigQuery and create visualizations via Python notebooks
        • How to access CARTO’s Analytics Toolbox for Snowflake and create visualizations via Python notebooks
        • How to visualize data from Databricks
      • Reference
    • CARTO QGIS Plugin
  • CARTO for Developers
    • Overview
    • Key concepts
      • Architecture
      • Libraries and APIs
      • Authentication methods
        • API Access Tokens
        • OAuth Access Tokens
        • OAuth Clients
      • Connections
      • Data sources
      • Visualization with deck.gl
        • Basemaps
          • CARTO Basemap
          • Google Maps
            • Examples
              • Gallery
              • Getting Started
              • Basic Examples
                • Hello World
                • BigQuery Tileset Layer
                • Data Observatory Tileset Layer
              • Advanced Examples
                • Arc Layer
                • Extrusion
                • Trips Layer
            • What's New
          • Amazon Location
            • Examples
              • Hello World
              • CartoLayer
            • What's New
      • Charts and widgets
      • Filtering and interactivity
      • Integrating Builder maps in your application
      • Summary
    • Quickstart
      • Make your first API call
      • Visualize your first dataset
      • Create your first widget
    • Guides
      • Build a public application
      • Build a private application
      • Build a private application using SSO
      • Visualize massive datasets
      • Integrate CARTO in your existing application
      • Use Boundaries in your application
      • Avoid exposing SQL queries with Named Sources
      • Managing cache in your CARTO applications
    • Reference
      • Deck (@deck.gl reference)
      • Data Sources
        • vectorTableSource
        • vectorQuerySource
        • vectorTilesetSource
        • h3TableSource
        • h3QuerySource
        • h3TilesetSource
        • quadbinTableSource
        • quadbinQuerySource
        • quadbinTilesetSource
        • rasterSource
        • boundaryTableSource
        • boundaryQuerySource
      • Layers (@deck.gl/carto)
      • Widgets
        • Data Sources
        • Server-side vs. client-side
        • Models
          • getFormula
          • getCategories
          • getHistogram
          • getRange
          • getScatter
          • getTimeSeries
          • getTable
      • Filters
        • Column filters
        • Spatial filters
      • fetchMap
      • CARTO APIs Reference
    • Release Notes
    • Examples
    • CARTO for React
      • Guides
        • Getting Started
        • Views
        • Data Sources
        • Layers
        • Widgets
        • Authentication and Authorization
        • Basemaps
        • Look and Feel
        • Query Parameters
        • Code Generator
        • Sample Applications
        • Deployment
        • Upgrade Guide
      • Examples
      • Library Reference
        • Introduction
        • API
        • Auth
        • Basemaps
        • Core
        • Redux
        • UI
        • Widgets
      • Release Notes
  • CARTO Self-Hosted
    • Overview
    • Key concepts
      • Architecture
      • Deployment requirements
    • Quickstarts
      • Single VM deployment (Kots)
      • Orchestrated container deployment (Kots)
      • Advanced Orchestrated container deployment (Helm)
    • Guides
      • Guides (Kots)
        • Configure your own buckets
        • Configure an external in-memory cache
        • Enable Google Basemaps
        • Enable the CARTO Data Warehouse
        • Configure an external proxy
        • Enable BigQuery OAuth connections
        • Configure Single Sign-On (SSO)
        • Use Workload Identity in GCP
        • High availability configuration for CARTO Self-hosted
        • Configure your custom service account
      • Guides (Helm)
        • Configure your own buckets (Helm)
        • Configure an external in-memory cache (Helm)
        • Enable Google Basemaps (Helm)
        • Enable the CARTO Data Warehouse (Helm)
        • Configure an external proxy (Helm)
        • Enable BigQuery OAuth connections (Helm)
        • Configure Single Sign-On (SSO) (Helm)
        • Use Workload Identity in GCP (Helm)
        • Use EKS Pod Identity in AWS (Helm)
        • Enable Redshift imports (Helm)
        • Migrating CARTO Self-hosted installation to an external database (Helm)
        • Advanced customizations (Helm)
        • Configure your custom service account (Helm)
    • Maintenance
      • Maintenance (Kots)
        • Updates
        • Backups
        • Uninstall
        • Rotating keys
        • Monitoring
        • Change the Admin Console password
      • Maintenance (Helm)
        • Monitoring (Helm)
        • Rotating keys (Helm)
        • Uninstall (Helm)
        • Backups (Helm)
        • Updates (Helm)
    • Support
      • Get debug information for Support (Kots)
      • Get debug information for Support (Helm)
    • CARTO Self-hosted Legacy
      • Key concepts
        • Architecture
        • Deployment requirements
      • Quickstarts
        • Single VM deployment (docker-compose)
      • Guides
        • Configure your own buckets
        • Configure an external in-memory cache
        • Enable Google Basemaps
        • Enable the CARTO Data Warehouse
        • Configure an external proxy
        • Enable BigQuery OAuth connections
        • Configure Single Sign-On (SSO)
        • Enable Redshift imports
        • Configure your custom service account
        • Advanced customizations
        • Migrating CARTO Self-Hosted installation to an external database
      • Maintenance
        • Updates
        • Backups
        • Uninstall
        • Rotating keys
        • Monitoring
      • Support
    • Release Notes
  • CARTO Native App for Snowflake Containers
    • Deploying CARTO using Snowflake Container Services
  • Get Help
    • Legal & Compliance
    • Previous libraries and components
    • Migrating your content to the new CARTO platform
Powered by GitBook
On this page
  • Adding a spatial filter
  • Synchronizing widgets with a deck.gl map
  • createViewportSpatialFilter

Was this helpful?

Export as PDF
  1. CARTO for Developers
  2. Reference
  3. Filters

Spatial filters

PreviousColumn filtersNextfetchMap

Last updated 2 months ago

Was this helpful?

Spatial filters allows you to filter by a geospatial polygon. This is typically used to synchronize widgets with a map (so that the widget is filtered as the user pans or zooms in) but it can also be used alongside other geospatial inputs, such as a draw a polygon mechanism.

Adding a spatial filter

To filter a widget by a geospatial polygon, simply use thespatialFilter property. This property is available in all , and expects a valid GeoJSON polygon or multipolygon.

Example

const categories = await dataSource.widgetSource.getCategories({
  column: 'group_name',
  operation: 'count',
  spatialFilter: polygon // GeoJSON.Polygon | GeoJSON.MultiPolygon; 
});

Synchronizing widgets with a deck.gl map

The most common use case is to create a map and then have the widgets be filtered. In this case, the question is: how do I pass the current viewport to the widgets?

  1. Use the onViewStateChange property in deck.gl to obtain the latest viewState

Your code probably already looks similar to this, where you're using map.jumpTo to sync layers with the viewState in deck.gl. In any case, you want to do the same for your widgets. Our recommendation is to send that viewState to a function that will create the spatialFilter out of the viewState.

import {Deck} from '@deck.gl/core';

deck.setProps({
  onViewStateChange: ({viewState}) => {
    const {longitude, latitude, ...rest} = viewState;
    map.jumpTo({center: [longitude, latitude], ...rest});
    debouncedUpdateSpatialFilter(viewState);
  }
});

We strongly recommend debouncing all actions downstream, at least for 100ms. From updating the spatialFilter to rendering new widgets, it all should probably wait until the user has finished interacting with the map. This will improve the performance of your application and reduce the amount of queries to your data warehouse.

  1. Create a function that turns a viewState into a spatialFilter, using createViewportSpatialFilter

Turning a deck.gl viewState into a valid GeoJSON polygon is not a trivial task. It involves unprojecting the viewState and making sure the resulting polygon is a valid GeoJSON, even when crossing the antimeridian for low zoom levels.

import {WebMercatorViewport, Deck} from '@deck.gl/core';
import {createViewportSpatialFilter} from '@carto/api-client';
// import {debounce} from './utils'; — Your favorite debounce method

let viewportSpatialFilter;

const debouncedUpdateSpatialFilter = debounce(viewState => {
  const viewport = new WebMercatorViewport(viewState);
  viewportSpatialFilter = createViewportSpatialFilter(viewport.getBounds());
  renderWidgets();
}, 300);
  1. Use your updated spatial filter in your CARTO widgets

// import and set up dataSource...

const categories = await dataSource.widgetSource.getCategories({
    column: 'group_name',
    operation: 'count',
    spatialFilter: viewportSpatialFilter // this is now in-sync with the map!
});

createViewportSpatialFilter

Returns a valid SpatialFilter for a given viewport, typically obtained from deck.gl's viewport.getBounds() method ([west, south, east, north]).

  • If the viewport covers the entire world (to some margin of error in Web Mercator space), undefined is returned instead.

  • If the viewport extends beyond longitude range [-180, +180], the polygon may be reformatted for compatibility with CARTO APIs.

Usage

import {createViewportSpatialFilter} from '@carto/api-client';

createViewportSpatialFilter(viewport.getBounds());

That's why we provide the , where all those operations are already available and ready to use.

CARTO charts and widgets
models
CARTO + deck.gl
createViewportSpatialFilter