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July 2024 Summaries

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The CARTO team has introduced a new mode in their SQL API called copy mode, which allows for fast bulk table loading and unloading using direct pipes to the underlying PostgreSQL COPY command. This mode streams data directly from a file on local disk to the CARTO cloud database, offering faster upload times compared to the Import API, but requiring more control over the process, such as creating target tables manually and composing geometry columns. The new feature supports appending to existing tables and has potential for tenfold speed improvements over the Import API.
Jul 30, 2024 980 words in the original blog post.
The Future of Location Intelligence` is a topic that emerged from a conference where over 250 leaders in Location Intelligence gathered to share and learn about new ways businesses are using location data to drive outcomes. The conference highlighted the importance of various types of analysis, such as optimization, inference, and predictive analytics, which can help add value to location data beyond just prediction. Traditional mapping boundaries are being redefined, with a focus on community-based mapping that takes into account smaller data patterns. Location data is recognized as having significant environmental benefits, particularly in areas like urban analytics and global forest watch projects. The conference emphasized the need for democratizing access to data and collaborating with users to unlock its full potential.
Jul 30, 2024 629 words in the original blog post.
CARTO uses a multitude of open source pieces, including some developed by themselves and contributors from existing projects such as PostGIS, Mapnik, Redis, Linux, Ruby, and Node.js. The company recognizes the importance of supporting other initiatives in their domain, geospatial, particularly when it comes to foundational improvements like the "GDAL barn raising" project. This project aimed to address core improvements to the GDAL/Proj ecosystem for handling modern coordinate transformations, which is crucial for CARTO's use cases such as maintaining coordinate accuracy and interoperating with data that expresses coordinate systems using the new "WKT2" standard. By joining the effort, CARTO avoids potential future development costs and risks by sharing the cost of foundational work with others. Now, they are looking to identify other open source geospatial foundations that need modernization or improvements, such as GEOS/JTS's overlay implementation and PostGIS's explicit tolerance model.
Jul 30, 2024 577 words in the original blog post.
Open data initiatives in local governance are gaining traction, making it easier for residents to access and utilize information that can inform decision-making. The city of New York's Open Data Law has been instrumental in promoting transparency and civic engagement. By publishing data sets on a portal, the city encourages citizens to take action and hold their government accountable. The success of open data depends on the ability to contextualize and analyze the data, which requires collaboration between agencies and the public. Smaller cities can benefit from starting with champions within their government who are passionate about open data and providing them with resources and moral support. Additionally, awareness of open data can be raised through civic tech movements and community engagement initiatives. Ultimately, the goal is to create a culture where data belongs to the people and is used to inform decision-making that benefits everyone.
Jul 30, 2024 1,085 words in the original blog post.
The US Department of Treasury and IRS designated approximately 8,700 economically distressed census tracts as opportunity zones to drive capital into low-income communities with tax incentives on capital gains for long-term investments. These zones are characterized by high poverty rates, median family income less than 80% of the wider region, and median housing vacancy rates. Opportunity zone investors and developers must propose projects that benefit local communities, such as bringing new businesses or expanding existing ones. The designation process was influenced by governors' nominations, with Texas having the most opportunity zones due to its rural areas. Location Intelligence can help evaluate opportunities in these locations by analyzing spatial data streams, including median rent, poverty rates, and transit accessibility. However, there are challenges in accounting for spatial variance among opportunity zones, making it essential to establish a comparative framework for decision-making processes.
Jul 30, 2024 1,525 words in the original blog post.
The CARTO Python SDK introduces new COPY methods for bulk ingestion of data into CARTO, providing a performant way to transfer data in chunks with compression by default. The implementation takes care of data formatting and uses the PostgreSQL COPY statement, making it easier to work with CSV files, transferring tables between accounts, loading data from external services, and more. The SDK is designed to be a reference client for the SQL API, offering control over the process and faster data transfer in a more pythonic fashion. With this new interface, users can simplify their client app and integration development while keeping the advantages of using the SQL API and underlying services.
Jul 30, 2024 601 words in the original blog post.
CARTO SalesQuest is a location-based Sales Analytics solution that applies spatial analysis and location data streams to your company's sales CRM data to boost sales performance. It provides role-based access, mobile and desktop readiness, and CRM readiness, allowing users to assign view access according to their organization's internal structure, access the platform from any device, and integrate with existing CRM systems. The solution enables sales teams to optimize their sales performance in real-time by analyzing sales data, identifying high-value opportunities, and visualizing customer locations according to time of last touch or opportunity value. By leveraging location-based analytics, sales teams can make informed decisions about where to deploy additional field reps, prioritize sales visits, and reduce churn rates. CARTO SalesQuest has been shown to increase ASPs, the number of clients visited per month, and decrease travel time for sales representatives, while also identifying sub-optimal sales behavior and enabling operations managers to analyze trends and patterns in sales behavior.
Jul 30, 2024 1,005 words in the original blog post.
The debut of Apple's iPhone in 2007 marked a location data revolution, which has led to an unprecedented amount of location data known as Location Data 2.0. Companies are employing Location Intelligence tools like spatial analysis to transform location data into business outcomes and surpass their competitors. Spatial optimization techniques such as dynamic routing and linear programming can optimize resource allocation, reduce collection frequency, and improve fuel costs in industries like waste management. Gradient boosting models and machine learning are being used to generate optimization algorithms for future price predictions, while indoor analytics build gradient boosting models with location data to predict in-store traffic more accurately and understand customer segments and behavioral patterns. As the business landscape continues to change, Location Intelligence is expected to play a significant role in transforming location data into business outcomes.
Jul 30, 2024 791 words in the original blog post.
The text explores how location data can be used to identify and understand communities beyond traditional geographic boundaries, using Williamsburg, NY as a case study. The neighborhood's history of diverse immigrant communities, cultural tensions, and gentrification are considered in the context of modern urban mobility and spatial planning. A clustering algorithm called DBSCAN is applied to location data from taxi rides to group similar characteristics, such as pick-up and drop-off locations, day of the week, time of day, and trip distance. The resulting map reveals 75 communities, including "partiers", "intra-borough residents", "working class" residents, "visitors with expensive taste", and "Orthodox Jewish" residents, each with distinct patterns and behaviors.
Jul 30, 2024 827 words in the original blog post.
The book "Urban Analytics: A 21st Century Introduction to Spatial Analytics" by Alex D. Singleton, Seth E. Spielman, and David C. Folch introduces an interdisciplinary analytics approach for understanding interconnected cities, moving beyond traditional GIS approaches to location data and spatial analysis. Urban analytics focuses on the production and consumption of data within cities, using new forms of data in combination with computational approaches to gain insight into urban processes. The authors aim to equip analysts with open-sourced data-sharing technologies and software to move past layering as the primary mode of data representation, instead using new formats better suited for representing urban data such as networks flows and other interactive visualizations. Urban analytics is crucial for addressing 21st-century urbanization, where technological achievements provide unprecedented connectivity across geographical and digital spaces. The practice combines data visualization tools and resources to balance geographical simplicity and specificity, allowing citywide monitoring of networks flows and other mobility systems at an unprecedented speed.
Jul 30, 2024 1,260 words in the original blog post.
The use of location data has gained significant attention lately, with organizations leveraging it to enhance marketing efficiency, reduce risk, improve medical research, and facilitate urban planning. However, despite its potential benefits, many businesses are slow to adopt location data due to the complexity of integrating new digital infrastructure, such as the Internet of Things, machine learning, artificial intelligence, and predictive analytics. Location data can be applied in all four types of analytic methods: Descriptive, Diagnostic, Predictive, and Prescriptive. Descriptive analytics provides a summary of historical data, while diagnostic analytics examines data to understand causes of events and behaviors. Predictive analytics identifies likelihood of future outcomes based on historical data, and prescriptive analytics finds the best course of action for a given situation. Location intelligence is not just another information system, but a powerful set of capabilities that can augment other business intelligence solutions, allowing organizations to unlock the power of geospatial data and apply geographic contexts to business data.
Jul 30, 2024 1,129 words in the original blog post.
The future of food depends on location intelligence, which has become increasingly important in the food industry due to the rise of food delivery services and changing consumer behavior. Companies like Instacart are using GPS data to improve operations, generate new hypotheses, and identify best practices for delivering food quickly and accurately. Location intelligence is also being used to target customer segments, understand shopper behavior, and optimize vehicle routing. Additionally, location data is being used in agriculture to increase crop productivity and quality, and to address the growing demand for precision farming applications. As the industry continues to evolve, companies that can effectively use location intelligence will be best positioned to succeed.
Jul 30, 2024 913 words in the original blog post.
CARTO is a cloud-native data warehouse platform that allows users to connect to their data warehouse, access and manage their data, create maps, and run spatial analysis. The platform provides a user-friendly interface, including a workspace hub, connections to data warehouses, data explorer, and carto builder, which enables users to build maps and dashboards at scale. Users can also subscribe to external datasets from the Spatial Data Catalog, access and manage their subscriptions, and run complex spatial analysis using CARTO Workflows, a no-code tool for running spatial analysis. With CARTO Academy, users can access tutorials, courses, and resources to enhance their geospatial analysis skills and leverage location data effectively.
Jul 30, 2024 1,379 words in the original blog post.
The growing demand for senior care facilities is driven by the increasing population of Americans aged 65 and over, which is expected to increase by 60 percent between 2016 and 2040. To address this challenge, modern site planning approaches such as Location Intelligence are being used to identify areas with high concentrations of adult children, who tend to retire in urban areas near their families. Location Intelligence applies spatial analysis to determine origin and destination patterns among retirees, constraints in these areas, and optimal sites for new facilities. By analyzing data on transportation, crime rates, real estate listing prices, and population demographics, Location Intelligence can help identify growth market corridors where demand for senior care services is likely to grow. In Washington D.C., for example, the city's drastic population increase has led to a shortage of housing, resulting in high property values. Using Location Intelligence, it is possible to segment census tracts by age and style each tract by total population to men and women ages 30-49, and then apply criteria such as accessibility, crime rates, and real estate prices to refine site selection. By applying these modern tools, site planners can make more informed decisions about where to locate new nursing homes, eliminating guesswork and ensuring that facilities are established in areas with high demand for senior care services.
Jul 30, 2024 919 words in the original blog post.
CARTO VL, a new Javascript library for vector-based client-side visualizations, offers a seamless UX experience by loading only the new view in the user's web browser, increasing app engagement. The library simplifies styling with an accessible language, allowing users to bring dynamic and data-driven components to life with just a few lines of code. CARTO VL also enables interactive features that guide user engagement and allow users to control styling parameters, making it a powerful tool for Location Intelligence applications.
Jul 23, 2024 485 words in the original blog post.
Microsoft and CARTO have announced a strategic partnership to bring cutting-edge Location Intelligence solutions to the enterprise world, leveraging Microsoft Azure cloud technology to power global Basemaps and Location Data Services offering. This partnership aims to democratize Location Intelligence by putting it at the center of customers' analytics strategy, enabling everyone to find insights on their location data in a faster, easier, and safer way. The CARTO Engine and CARTO Builder will be available in Azure's Marketplace, simplifying the installation and configuration for users looking to deploy location intelligence within a few clicks.
Jul 23, 2024 400 words in the original blog post.
At CARTO, they aim to provide users with an advanced and complete geospatial platform that extends the capabilities of popular cloud-based data warehouses like Google BigQuery, Snowflake, Databricks, and Amazon Redshift. The key benefit of their "cloud-native" approach is that it minimizes data movement across different environments and applications, embracing data gravity by design to ensure scalability, flexibility, and security. This approach ensures that all data processing, analysis, visualization, and storage are closely aligned within the cloud data warehouse platform, without compromising on the governance and security of user data. CARTO's platform is built to push down data processing and analysis directly into the cloud data warehouse, extracting value from native capabilities offered by these platforms. This approach guarantees consistent application of rules and policies in datasets, strong authentication and authorization mechanisms, fine-grained access control, transparency, and auditability within the data warehouse itself.
Jul 23, 2024 1,350 words in the original blog post.
AI is revolutionizing the geospatial domain by leveraging its benefits, including democratization of spatial analysis, enhanced user engagement, instant and actionable insights, and adaptive reasoning, making it more accessible and efficient for decision-makers to analyze complex spatial data. Organizations are adopting AI to improve their operations, such as optimizing delivery routes and identifying new locations for EV charging stations, with tools like CARTO AI Agents providing an intuitive conversational interface that simplifies complex spatial data analysis, eliminating traditional barriers of complexity. The adoption of AI in geospatial is growing, with 75% of surveyed organizations using or planning to use AI, but concerns around data security and privacy remain a major issue. With the potential to transform the field by making spatial analysis more accessible, efficient, and insightful, AI is set to have a significant impact on the geospatial world.
Jul 18, 2024 850 words in the original blog post.
The Location Intelligence space has seen significant changes and advancements in 2018, with several notable stories making headlines. The most clicked location intelligence stories included Strava's secret US army bases, Google's pricing model change for its API, the closure of open source mapping startup Mapzen, Microsoft releasing 125 million building footprints in the US as Open Data, and Apple rebuilding its maps from the ground up. Thought leadership pieces explored topics such as PostGIS, population density measurement, geospatial Python libraries, and the importance of geospatial analytics. Various articles showcased interesting cartography and design elements, including XKCD's "Map Age Guide", The New Orleans Twitter rant, and stunning interactive maps like "All the buildings in Manhattan" and a map of every building in America. These stories highlight the ongoing evolution of Location Intelligence and its impact on various industries and applications.
Jul 17, 2024 1,457 words in the original blog post.
The report `The State of Spatial Data Science 2024` explores the current state of the industry, highlighting its challenges and opportunities. The field is multidisciplinary and rapidly advancing, making it difficult for experts to stay competitive. Despite its niche status, the industry is broad and fragmented, requiring ongoing education and training to stay informed. The report provides insights into emerging trends such as AI in Spatial Data Science, cloud adoption, breaking down GIS silos, addressing climate change, and recruitment challenges. It offers a comprehensive overview of the industry's current state, providing valuable information for organizations looking to stay ahead in the evolving world of Spatial Data Science.
Jul 17, 2024 342 words in the original blog post.
The CARTO-Waze connector is an open-source tool that allows users to access and visualize real-time Waze traffic data, while also providing a platform for historical analysis using the WARP system developed by the Louisville Metro Government. This solution enables cities to gain a deeper understanding of their urban mobility systems, allowing for more informed decision-making and planning. The connector is designed to be user-friendly, with features such as filtering and calendar dropdowns, making it easier for data scientists, planners, and transit experts to analyze and visualize historical Waze data.
Jul 17, 2024 525 words in the original blog post.
CARTO has released several new enhancements and features in the second quarter of 2024, including geoAI, raster data integration, density heatmap visualizations, custom basemaps, detailed PDF reports, external API connections, raster data analysis, advanced spatial data science techniques, derived data products, a tag system for organization, and improved app development processes. These updates aim to provide users with powerful spatial analytics capabilities, streamline workflows, and enhance the overall user experience.
Jul 09, 2024 1,580 words in the original blog post.
This interactive map, built with CARTO VL, displays active fire perimeters and their growth over time using synced data streams, providing insights into the speed of fire spread and geographic patterns. The map utilizes powerful visualization capabilities, including animations and dynamic UI elements, to display smoke plumes produced by fires from NOAA's Fire Products dataset. Viewport-based styling allows for a better understanding of fires at both national and localized levels, with the ability to zoom in on specific areas to highlight larger or smaller fires. A legend and hover/pop-up components provide additional information, including dynamic timestamps and acreage data, enhancing the user experience and providing valuable insights into fire patterns.
Jul 04, 2024 865 words in the original blog post.
The new dynamic aggregation feature for CARTO's Engine allows users to group points spatially, reducing the number of points on maps and improving performance. This is achieved by clustering points into grid cells and replacing each cluster with a single point summarizing its group. Users can customize how their data is aggregated through the `aggregation` parameter in the MapConfig, which defines columns for aggregation and placement options such as centroid or point-grid generation. The feature also includes automatic aggregation when no explicit parameters are provided, using a random sample of points to represent each group. This allows users to visualize large datasets without requiring extensive customization. The new feature is available for both raster and vector tiles, with support for various aggregate functions, including sum, average, minimum, maximum, and mode.
Jul 04, 2024 1,704 words in the original blog post.
Small data, a subset of big data, provides immediate impact and meaningful insights by acting on location data immediately. It helps to visualize trends not territory, enabling spatial analysis beyond traditional performance metrics. Smaller comparisons can reveal bigger stakes by providing descriptive models that present information on current conditions, which can be acted upon immediately, ultimately leading to more effective sustainable solutions for water shortages.
Jul 04, 2024 816 words in the original blog post.
The Total Solar Eclipse Map to Rule All Social Eclipse Maps is a tool created by Senior Cartographer Mamata Akella, providing a selection of cities within the shadow's path of totality. The map shows city sizes based on their time in totality and colors its distance from the centerline of the eclipse path. While getting close to the centerline offers the best chance for totality, other eclipse phenomena can be seen further away from it. Cities like Carbondale Illinois and Hopkinsville Kentucky offer exceptional durations, while those closer to the edge, such as Hebron Lincoln and Mullen in Nebraska, provide an opportunity to experience other celestial events during the eclipse. The map also offers a bonus feature for viewers not interested in gridlock traffic, showing % obscuration for major cities across the US and indicating safe times to view the sun with compliant glasses.
Jul 04, 2024 704 words in the original blog post.
The text discusses four common problems encountered when visualizing location data on maps, along with solutions using CARTO Builder and CARTO VL. When dealing with coincident points, two methods can be used: aggregating the points to create centroids or using symbology to spread out markers. Aggregation is also effective for handling non-coincident overlapping points, allowing users to visualize the volume of data across an area. Styling maps with too many categories can be achieved by grouping data into larger categories, such as school regions, and using choropleth maps or functions like top values. Finally, CARTO VL offers features to style maps according to zoom levels, including conditional code blocks, thematic map types, and seamless interpolation between styles.
Jul 04, 2024 1,518 words in the original blog post.
Greenpeace USA and Canada used data visualization with CARTO to map the location of oil spills from pipelines owned by TransCanada, Kinder Morgan, and Enbridge, highlighting the proximity of these pipelines to water sources, major lakes, rivers, and gulfs across the United States. The map shows that nearly every part of the country is at risk for future spills, which have led to 20 fatalities, 35 injuries, $2.6 billion in costs, and over 34 million gallons spilled in the past decade. By emphasizing the threat posed by oil pipelines, Greenpeace aims to persuade citizens that the danger is not just an abstraction, and is asking the public to pressure JPMorgan Chase, which finances these pipelines, to prevent new constructions. The map also underscores the pervasiveness of the risk, with 373 spills totaling 63,221 barrels of hazardous oil since 2010, and a constant threat of spills due to the infrastructure required for oil extraction, refining, transportation, and sale.
Jul 04, 2024 551 words in the original blog post.
The Pi Project is an ambitious art installation that connects the world through art, launched on March 14th, 2017, to be the largest in the world with over 250 individual sculptures across 5 continents. The brainchild of visual artists Chris Klapper and Patrick Gallagher, it explores mathematical concepts through sculpture, data visualization, mathematics, and new media. Each digit of Pi is cast as a white gypsum cement sculpture, representing its place within the sequence, and collectors from around the world join the community by receiving their digit alongside a certificate of authenticity. The installation grows annually with new sculptures and digits added, intertwined individuals across the globe, represented on an interactive map that uses spatial analytics to properly represent project data.
Jul 04, 2024 661 words in the original blog post.
The 2016 Presidential Election in the United States revealed a significant divide between different regions of the country, with educational attainment being a key factor in determining voting patterns. The data visualization dashboard created by the New York Times allows users to explore election results and demographic data at the county level, showing that areas with higher levels of educational attainment tend to vote for Clinton, while rural counties with lower education levels voted for Trump. While wealthier counties also tended to vote for Clinton, the margin was not as wide as the educational divide. Choropleth maps can be problematic when representing this kind of data due to dominance by larger shapes, but using a combination of size and color can provide more nuanced insights. The use of demographic data from the US Census ACS 2010-2014 and election results scraped from the New York Times provides a comprehensive view of the election's impact on different regions of the country.
Jul 04, 2024 654 words in the original blog post.
The article presents 80 data visualization examples that showcase the power of location data and maps in various fields, including conflict zones, connectivity, environmental issues, social media, transportation, and more. The visualizations are grouped into six categories: Conflict Zones, Connectivity, Environmental, Sites Sounds and Smells of City Living, Transportation, and Social Media. These examples demonstrate how location data can be used to visualize complex information in a clear and concise manner, often with interactive features that allow viewers to explore the data in more detail. The article highlights the importance of using open data and machine learning techniques to create visually engaging and informative data visualizations.
Jul 04, 2024 6,230 words in the original blog post.
This map provides real-time data on the perimeter of LA wildfires, showing affected addresses and streets impacted by the fires. It was created by Mamata Akella and aims to help with disaster relief efforts and resource allocation for residents in need.
Jul 04, 2024 75 words in the original blog post.
Thematic maps provide a critical tool for professionals to gain insights from spatial data, enabling the discovery of patterns and relationships between locations. Different visualization techniques, such as choropleth maps, heat maps, proportional symbol maps, dot density maps, and animated time-series maps, are used to represent various types of data and achieve specific goals. These maps can be particularly useful for decision makers, analysts, storytellers, and others who need to draw insights from their data or tell a powerful story about the world around us. By selecting the right type of map and techniques, users can unlock new dimensions in understanding their data and make informed business decisions.
Jul 04, 2024 1,069 words in the original blog post.
CARTO has introduced heatmaps for big data visualization, allowing users to create powerful and intuitive visualizations of their spatial data. Heatmaps use color gradients to represent density and intensity of data points over geographical areas, making them ideal for conveying concentration patterns, identifying high and low density areas, and conducting qualitative analysis. However, they may not be optimal for all use cases, such as precise spatial analysis or noisy data, where more quantitative outputs are required. With CARTO's new heatmap capabilities, users can create large-scale heatmaps online by adding a point layer to their map and choosing the right color palette and density radius. This feature is part of a broader effort to make spatial data analysis easier and more effective, with resources such as tutorials, examples, and webinars available to help users get started.
Jul 04, 2024 962 words in the original blog post.
CARTO, a location intelligence platform provider, has had a remarkable year in 2018 with numerous accomplishments. The company's team demonstrated passion, curiosity, and dedication to their work, leading to several successes. This year was marked by notable events such as the Mobile World Congress 2018, where CARTO announced a new solution for Vodafone Analytics; the NYC Open Data Week 2018, which featured an art exhibit showcasing open data; and two industry summits in Madrid and New York, bringing together Location Intelligence practitioners and pioneers. CARTO also released new features, including Airship, a frontend library designed to simplify location intelligence app development, and CARTO VL, a future of digital cartography that allows users to create maps surpassing what was once thought possible. The company's solutions were showcased in various applications, such as the Urban Analytics publication, which highlighted the impact of mobility problems on city residents. Additionally, CARTO was recognized as a Strong Performer in Forrester's Location Intelligence Wave Report and included in Gartner's Outdoor Mapping and Location Services Competitive Landscape Report.
Jul 04, 2024 1,235 words in the original blog post.
While early cartographers were aware that their maps had a purpose, innovations in map perspective and aesthetics contributed to the evolution of location intelligence over five centuries. Leonardo da Vinci's "Town plan of Imola" (1502) is an example of ichnography, a bird's-eye perspective technique used by Google Maps today, but was neither obvious nor easy for cartographers at the time. Petrus Plancius' "The Molucca Islands" (1594) showcases his understanding of mathematics and psychology in selling a new perspective through rich colors and illustrations. Matthew Fontaine Maury's "Whale Chart" (1851) is an early example of crowdsourcing, while William Bunge's "Where Commuters Run Over Black Children on the Pointes-Downtown Track" (1971) uses data from various sources to reveal a tragic and provocative map that transcends its depiction. These historical maps demonstrate how location intelligence has evolved over time, from precise renderings of cities to complex predictions and holistic views.
Jul 04, 2024 698 words in the original blog post.
The text discusses design principles for creating effective maps on the web, highlighting the importance of aesthetics and storytelling in cartography. Two maps are presented as examples, one of Washington Park in Denver, Colorado, and another that showcases every county in the United States, demonstrating how colors, labels, boundaries, and symbols can be used to convey information and create a powerful map. The text also explores additional design principles, such as adding variables to tell a story, incorporating shapes to de-clutter the map, and using features to emphasize unexpected data, which are illustrated through another example of a bivariate map.
Jul 04, 2024 617 words in the original blog post.
At CARTO, they challenge themselves to use their platform as their users do, understanding better the pains and gains of using it. This approach helps them learn a lot about SQL, React, WebGL, projections, spatial algorithms, and mapping. They applied graph coloring to maps, which is a technique to assign colors to vertices in a graph so that no two adjacent vertices share the same color. Map coloring is an application of graph coloring, assigning different colors to adjacent polygons (countries, provinces, etc.). The Welsh-Powell algorithm is a greedy coloring approach, while Kempe's graph coloring algorithm adds nodes back to the graph in reverse order from which they were removed, coloring each added node with a color not used by its neighbors. These algorithms can be implemented as PostgreSQL functions using CARTO's batch SQL API. The resulting table contains a color assigned for each cartodb_id, and the original world_borders table can be joined with this table to visualize the result. The Kempe's graph coloring algorithm is more complex than the Welsh-Powell algorithm but still solvable using a pure PostgreSQL function.
Jul 04, 2024 1,932 words in the original blog post.
A new look for Positron and Dark Matter basemaps Today we are excited to share the new and enhanced versions of our signature basemaps Positron and Dark Matter. Since their initial release in 2014, Positron and Dark Matter have served as the unobtrusive backdrops for millions of amazing CARTO-based visualizations. We are confident that these refreshed designs will continue to serve that purpose while also giving your maps a fresh look. A more efficient system has been implemented behind the scenes, streamlining design and update processes. Cartographically, we fine-tuned the color system, eliminating extra noise and introducing detail less aggressively, with increased visibility of contextual information for improved legibility and visual hierarchy. These changes will provide an improved figure-ground relationship between our basemaps and your data overlays.
Jul 04, 2024 256 words in the original blog post.
CARTO has introduced an update to its heatmap style, which can now support large-scale data visualization. Heatmaps are a powerful way to visualize spatial data using color gradients to represent density and intensity over geographical areas. They are ideal for conveying quick visualizations of data concentration, identifying high and low density areas, and conducting qualitative analysis. However, they may not be optimal for sensitive or private data, precision of outputs, or when there are no spatial patterns in the data. With CARTO's new capabilities, users can create heatmaps online by adding a point layer to their map and experimenting with different color palettes and density radii. The update also enables developers to build large-scale heatmaps in their apps using CARTO + deck.gl.
Jul 04, 2024 962 words in the original blog post.
CARTO has introduced a new mobile-optimized basemap called Voyager, designed by Head of Cartography Mamata Akella. The updated basemap comes in three versions (labels on top, labels under, and no labels) and incorporates vital street-level data for better traffic flow understanding and map creation. Building addresses are now visible at the largest zoom level, allowing users to operate at a detailed street level. Voyager also emphasizes roadways with different colors for highways, major roads, and minor roads, making it easier to identify specific segments and intersections. Additionally, several design changes have been made to ensure clarity and legibility in maps.
Jul 04, 2024 561 words in the original blog post.