# Maps & Cartography

## 3 Wildfire Maps: How to Track Real-Time Fires Around the World

When wildfires burn, satellites (MODIS and VIIRS) track forest fires and deliver warnings to emergency crews. It all goes into real-time active fire maps.

## Esri JavaScript API Examples: 15 High-Tech Webmaps and Webscenes

Just like any API, the Esri JavaScript API offers ways to create your own custom 2D and 3D webmaps and webscenes to interact with it.

## Epic Web Maps – The Maps Hall of Fame [Best Maps]

The ultimate list of best maps online. These display state-of-the-art web mapping technology such as live feeds, 3D views and cutting edge visualization.

## Geodesy: The Mathematics of “Where”

Geodesy is the field of applied mathematics that studies Earth’s shape, orientation, positions and gravity for the past, present and future.

## How to Show Map Scale with Scale Bar, Inset Map and Ratio Text

There are several ways to help readers understand map scale and distance. For example, cartographers use scale bars, locator maps, stated and ratio scale.

## Latitude, Longitude and Coordinate System Grids

Latitude lines run east-west, are parallel and go from -90 to +90. Longitude lines run north-south, converge at the poles and are from -180 to +180.

## Conic Projection: Lambert, Albers and Polyconic

When you place a cone on the Earth and unwrap it, this results in a conic projection. Examples are Albers Equal Area Conic and the Lambert Conformal Conic.

## The State Plane Coordinate System (SPCS)

The State Plane Coordinate System divides the United States into 124 zones to locate any point with a high level of accuracy (one part in 10,000).

## Map Distortion with Tissot’s Indicatrix

Map distortion is best understood looking at Tissot’s indicatrix. It contains circles and shows how map projections distort shape, size and distances.

## Why Are Rhumb Lines (Loxodromes) a Constant Track Direction?

Rhumb lines (or loxodrome) have constant bearings and cross all meridians at the same angle. They are not the shortest distance between 2 points on a sphere