Відео

How to orientate an orthophoto with a topographical map and identify features on an orthophoto.

How to draw a and determine the index of an orthophoto.

How to calculate the scale of an orthophoto using the map and orthophoto distance of a feature.

How to determine the scale of an orthophoto using the focal length of a camera. It also demonstrates the why features closer to the camera have a bigger scale.

How to determine direction of river flow

How to determine stream order

How to draw and determine the location of a map/map index

Calculating magnetic declination

Calculating magnetic declination

How to determine absolute location

How to determine what feature is located at an absolute location

How to determine true bearing

Area

How to calculate distance

Ratio To Word Scale

Word To Ratio Scale

Determining height

Gradient 1

Gradient 2

Slopes, Valley & Spur

Vertical Exaggeration

Cross-section