GIS and Spatial Analysis

Watch

• What Is GIS? A Guide to Geographic Information Systems ↗Spatial Zone
• What is GIS? ↗Esri
• GIS deals with which kind of data? | Spatial data in GIS? in HINDI URDU #GIS ↗LearnEveryone
• What is Remote Sensing and GIS? ↗Ecoresolve
• Introduction to Geographic Information Systems (GIS) Software: An Open Source Lecture #GIS #Maps ↗GIScience
• The harsh reality of being a GIS analyst ↗Matt Forrest

Read

• An Introduction to Geographical Information Systems ↗An accessible primer, this volume demystifies the foundational concepts of GIS, making it indispensable for any nascent spatial analyst.Ian Heywood, Sarah Cornelius, Steve Carver
• Geographic Information Science and Systems ↗A comprehensive treatise, this text offers a rigorous exploration of the theoretical underpinnings and practical applications that define modern GIScience.Paul A. Longley, Michael F. Goodchild, David J. Maguire, David W. Rhind
• GIS and Cartographic Modeling ↗This seminal work elucidates the elegant logic of map algebra, providing the conceptual bedrock for advanced raster-based spatial analysis.Dana Tomlin
• What is GIS?A foundational essay that succinctly defines the scope, challenges, and intellectual promise of Geographic Information Systems.Michael F. Goodchild
• Geographic Information ScienceThis influential paper articulates the emergence of GIScience as a distinct academic discipline, charting its intellectual landscape and research agenda.Michael F. Goodchild

Voices to follow

• Michael F. Goodchild ↗A foundational theorist in geographic information science, he shaped the academic understanding of how spatial data informs our world.Emeritus Professor of Geography, University of California, Santa Barbara
• Jack Dangermond ↗As the visionary behind Esri, he has commercialised and democratised GIS technology, making spatial analysis accessible globally.Founder and President, Esri
• Dawn Wright ↗A leading voice in marine GIS and oceanography, she champions the application of spatial science to understand and protect our oceans.Chief Scientist, Esri; Professor of Geography and Oceanography, Oregon State University
• Paul Longley ↗His work on urban analytics and geodemographics provides critical insights into population dynamics and the spatial patterns of human activity.Professor of Geographic Information Science, University College London

Glossary

• AttributeAn attribute is descriptive information about a geographic feature. While spatial data tells you where something is, attributes tell you what it is or what it's like. For example, if a map shows a school, its attributes might include the school's name, the number of students, or the principal's contact information.
• BufferA buffer is an area created around a geographic feature (like a point, line, or polygon) at a specified distance. It helps identify areas within a certain range of something. For example, creating a 500-meter buffer around a proposed new factory could show all the homes and schools that would be within half a kilometer of its location.
• CoordinatesCoordinates are a set of numbers that pinpoint an exact location on the Earth's surface. The most common types are latitude (how far north or south) and longitude (how far east or west). For example, the coordinates 28.7041° N, 77.1025° E tell you the precise location of Delhi, India.
• GIS (Geographic Information System)A GIS is a computer system that lets you collect, store, manage, analyze, and display all types of geographic information. It helps you understand patterns and relationships based on where things are. For example, a GIS could show all the schools in your city, along with their student numbers and sports facilities, helping city planners decide where to build a new park.
• GPS (Global Positioning System)GPS is a satellite-based navigation system that provides location and time information anywhere on Earth where there is an unobstructed line of sight to four or more GPS satellites. Your phone uses GPS to show you your current location on a map. For example, when you use a navigation app to find your way to a friend's house, you're using GPS.
• LayerIn GIS, a layer is like a transparent sheet containing one specific type of geographic information, which can be stacked on top of other layers. This helps organize and visualize different kinds of data separately or together. For example, one layer might show all the roads, another might show all the rivers, and you can view them together on a single map.
• MapA map is a visual representation of an area, showing features like roads, rivers, and buildings. In GIS, maps are often digital and interactive, allowing you to zoom in, zoom out, and turn different information on or off. For example, Google Maps is a digital map that uses spatial data to show you how to get from one place to another.
• Remote SensingRemote sensing is the process of gathering information about the Earth's surface from a distance, usually using satellites or aircraft. These sensors collect data like images or temperature readings without physically touching the area. For example, satellite images used to track deforestation in the Amazon rainforest are collected through remote sensing.
• ScaleScale describes the relationship between a distance on a map and the actual distance on the ground. It tells you how much the real world has been shrunk to fit on the map. For example, a map with a scale of 1:10,000 means that one unit of measurement on the map (like 1 cm) represents 10,000 of the same units (100 meters) in the real world.
• Spatial AnalysisSpatial analysis is the process of examining geographic data to find patterns, relationships, and trends. It helps answer questions like "Where is the best place to build a new hospital?" or "What areas are most at risk from flooding?" For example, analyzing crime locations to find "hot spots" where more police patrols are needed is a type of spatial analysis.
• Spatial DataSpatial data is any information that describes the location of features or objects on the Earth's surface. This data tells you where something is. For example, the exact latitude and longitude of your school, or the outline of your neighborhood on a map, are types of spatial data.

Threads 6

Where this connects to other fields, and why it's worth knowing.

• Inequality & Class Sociology

  Which few blocks you're born in can predict how your whole life goes, because being close to good schools and jobs matters that much. In some cities, crossing a single street changes average life expectancy by decades. Your zip code can shape your future more than your talent does.

• Migration & Movement History

  Newton said gravity pulls harder toward big objects and weaker the farther away they are. Weirdly, people moving between cities follow almost the same formula: big cities pull the most migrants, and the farther a place is, the fewer people make the trip. Human crowds obey a law borrowed straight from the planets.

• World Literature Literature

  The same clever trickster character keeps popping up in folktales from India to West Africa, and that's not a coincidence. Stories traveled with traders, hitching rides along the same routes as spices and cloth. So tracing where a folktale shows up can actually map the ancient roads humans walked and traded on.

• Law, Inequality & Social Power Law

  In the 1930s, officials drew red lines on maps marking which neighborhoods, usually Black ones, banks should refuse loans. That was called redlining. Those exact lines still predict who's richer, healthier, and more heavily policed today. The law got written onto the map, and even after the law was scrapped, the lines outlived it, because discrimination carved into geography just stays put.

• Inequality & the Distribution of Wealth Economics

  A researcher named Schelling ran a simple model: give people a tiny preference, like 'I'd just like a few neighbors similar to me,' and watch. Even that mild wish snowballs into neighborhoods sharply split apart. So streets can end up brutally segregated even when almost nobody is actually very prejudiced.

• Language Evolution Literature

  When steep mountains cut valleys off from each other, the people in each valley drift into their own separate language, like islands of speech. That's why the single island of New Guinea holds around 800 languages. Rough terrain acts like an engine, splitting one way of talking into hundreds.