Maps & Cartography Archives - Page 2 of 6

Dot Distribution vs Graduated Symbols vs Proportional Symbol Maps

While graduated symbols and proportional symbols scale the size of the symbol based on value, dot distribution maps use dots to represent quantity.

Active Fire Maps - Landsat Burned Area Extent

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 windfarm webmap webgl

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.

Decimal Degrees DD Degrees-Minutes-Seconds DMS

Degrees/Minutes/Seconds (DMS) vs Decimal Degrees (DD)

We can find any location on Earth using latitude and longitude coordinates. And we measure those coordinates with decimal degrees or degrees/minutes/seconds

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.

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.

North America Lambert Conformal Conic Projection

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.

State Plane Coordinate System Map Projections

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).

Tissot's indicatrix North American Lamert Conformal Conic

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.

How to Create Flow Maps and Link Movement with Direction Lines

Cartographers use lines to show the movement of phenomenon (people, ideas or money) in flow maps. To show the magnitude, they change the width of flow lines