# Projections and their classification

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## **TYPES OF PROJECTIONS IN TERMS OF THE DIMENSION TO KEEP**

Equidistant 1.PROYECCIONES

"They keep the distances in certain directions.

"The lines that remain: AUTOMEC LINES

Anamorphosis-LINEAR - Linear Deformation in the rest of the addresses .= (distance measured in the projected / actual Distance)

ANAM AUTOMEC-lines. LINEAR = 1

-Used when you want to measure from a point **2.PROYECCIONES COMPLIANT**

"They keep the angles as each pair of curves in the field (the tan) and its lines represented.

"Anamorphosis ANGLE: The difference between the principal and the angle of the sphere.

He used charts

-Parallel (Upright) Meridian **3.PROYECIONES EQUIVALENTS**

-Maintain the surface of any shape

SURFACE-Anamorphosis is the ratio between the area of the map and reality

"They are generally used for thematic maps, parcel

4-PROJECTIONS AFILACTICAS or anaphylactic

"Do not retain any previous magnitude but errors (Anamorphosis) are close to a

## **GEOMETRIC CLASSIFICATION**

BY THE POSITION:

"POINT OF VIEW PROJECTION or VERTICE

DESIGN-CENTER (tangency)

I-projected plane, or azimuthal OUTLOOK

It is planned to sup. Land a plane

It is planned to sup. Land on a sup. Geometric (-cone-cylinder)

I-FLAT CHARACTERISTICS OF PROJECTIONS

-Circles passing through vertex of P -> Straight lines

Pts equidistant from the vertex-projection-> equidistant from C. of Proj.

-Surfaces equidistant from the center of P. -> Same deformation

CLASSIFICATION OF P. FLAT

**A-LEVEL FOR THE POSITION (CENTER OF PROJECTION)**

1.Plano perpendicular to the axis. Center pole-> Polar, Equatorial

2.Plano perpendicular to Ecuador. Center on the Ecuador-> Meridiana, transversal

3.Plano perpendicular at any point-> Oblique, direct, horizontal, overhead

**B-BY PROJECTION VERTICE**

1.GNOMONICA or CENTRAL-> PTO OF VIEW IN THE CENTRE OF THE EARTH

"It is projected throughout the hemisphere

1.GNOMONICA or CENTRAL-> PTO OF VIEW IN THE CENTRE OF THE EARTH

-The maximum-orthodromic circles-> Straight

Large-deformation to get away from the center of projection

**2.ESTEREOGRAFICA-> PTO opposite view to PROY CENTER**

"It's under (keep the angles)

"It can be a hemisphere

"Circles in the field-> circle in the plane

If the circles pass through C of P-> R are circles

"In circles centered on the scale is constant-CP

"When there are lines that intersect under the angle meridians cte-> rhumb-> logarithmic spirals

**3.ORTOGRÁFICA-> PTO OF VIEW IN THE INFINITE**

-Field is a hemisphere maximum

**4.ESCENOGRAFICA-> EXTERIOR VIEW NEXT PTO**

1.71 R-AHIR

1.594 R-PARENT

1.69 R-LOWRY

1.76 R-FIORINI