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21 guides on Joins.
What is Geospatial Data? Types, Formats, Examples
Geospatial data describes things tied to a place on Earth. The two main types, vector and raster, plus formats, sources, and examples.
What is Geospatial Analysis? Methods and Examples
Geospatial analysis, or spatial analysis, examines where things are and how location shapes patterns. Core methods, hot spots, examples, GIS vs spatial analysis, and SQL.
What is a Building Footprint? Data, Sources, Uses
A building footprint is the outline a building occupies on the ground. What footprint data contains, the major open datasets, and how to use them at scale.
What is Probable Maximum Loss (PML)? EP Curves, AAL
Probable maximum loss (PML) is the largest loss an insurer expects from one property or a portfolio at a chosen probability. How PML, EP curves, AAL, and TVaR fit.
What is POI Data? Points of Interest Data, Sources
POI data lists the places people go: shops, restaurants, hospitals, schools, and landmarks. What a record contains, where it comes from, and how to use it.
What Is a Spatial Join? Predicates, Types, and SQL
A spatial join matches rows from two tables by where their geometries sit. How spatial joins work, the predicates and join types, and how to write one in SQL.
Raster vs. Vector Data: Differences, Formats, and Uses
Raster data is a grid of pixels. Vector data is points, lines, and polygons. How the two GIS data models differ, their formats, and how to combine them.
What is Parcel Data? Parcel Numbers, Boundaries, Sources
Parcel data records every piece of land: its boundary, parcel number, owner, land use, and assessed value. Where it comes from and how to use it.
Data Center Site Selection: Criteria, Data Layers, Process
Data center site selection is the process of finding land for a facility of tens to hundreds of megawatts. On suitable land, the facility can be powered, connected, cooled, and permitted, and kept clear of natural hazards. Analysts screen candidate land against grid capacity, transmission, fiber, water, hazards, zoning, and latency to users. They then […]
