Geographical setting

Geographical setting

1. Distortion of circles

   • Tissot circles are perfect circles of the same size placed at regular intervals on the curved surface of the Earth.

2. Distorted data

   • Map data is always associated with a location on the earth's surface.

3. Qué conservan las proyecciones cartográficas

   • Preserve the area
     • This means that the areas that are the same on the globe are the same on the map
   • Preservation of shape (angles)
     • Map projections preserve angles (around points) and therefore shape in small areas
   • Preservation of distance and direction
     • Some projections preserve distance relationships: a straight line between two points on the map is the shortest distance between those two points on the earth
   • Preservation of interruptions
     • Interrupted map projections minimize distortions in the uninterrupted part of the map and are often used on maps of the entire Earth