Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
Plane coordinates for EAST/WEST
|
Lambert Conformal
|
|
|
Plane Coordinates for North/South
|
Transverse Mercator
|
|
|
Projection
|
A mathematical formula to convert a 3d coordinates to 2d coordinates
|
|
|
datums
|
specifies the earths center/fundamental points
|
|
|
ellipsoid
|
semi major/minor axes -If the center of something is located by positioning an ellipsoid to match points, the resulting datum i called “local datum”. |
|
|
how many degrees of separation between UTM zones?
|
6
|
|
|
web mercator
|
uses spherical formulas at large scales
|
|
|
standard mercator
|
uses ellipsoid formulas at all scales
|
|
|
properties of projections
|
preserve area, preserve shape, preserve distance, preserve direction (At least one will be distorted)
|
|
|
conformal
|
preserves shape/angles locally (transverse Mercator)
|
