What is a conical map?

What is a conical map?

or conical projection A method of projecting maps of parts of the earth’s spherical surface on a surrounding cone, which is then flattened to a plane surface having concentric circles as parallels of latitude and radiating lines from the apex as meridians.

What map has latitude and longitude curved lines?

The Winkel Tripel projection is a modified azmiuthal projection. This is, in essence, a globe that is projected onto a flat surface giving it curved lines of latitude and curved meridians.

How many standard lines does a conic tangent projection have?

one standard line
Tangent cones result in one standard line where the scale on that line has no distortion. Secant cones cut distortion down with two standard lines. These standard lines have no distortion but it increases away from these lines.

What does conic projection mean?

: a projection based on the principle of a hollow cone placed over a sphere so that when the cone is unrolled the line of tangency becomes the central or standard parallel of the region mapped, all parallels being arcs of concentric circles and the meridians being straight lines drawn from the cone’s vertex to the …

What is conic projection in geography?

conic projection. [ kŏn′ĭk ] A map projection in which the surface features of a globe are depicted as if projected onto a cone typically positioned so as to rest on the globe along a parallel (a line of equal latitude).

What is a conic projection map used for?

Conic projections are typically used for mid-latitude zones with an east–west orientation. They are normally applied only to portions (such as North America or Europe ) of a hemisphere.

How is a conic map made?

Conic projections are created by setting a cone over a globe and projecting light from the center of the globe onto the cone. The cone is cut along any longitude line to produce the final projection. The meridian opposite the cut is the map projection’s central meridian (the red line in the graphic below).

What are conic map projections used for?

What is a conic map used for?

How many lines of latitude does a conic projection have?

Conic projections often have two. In a few projections, like the Sinusoidal and the Polyconic, every line of latitude has true scale and is therefore a standard parallel. In ArcGIS, you can change the standard parallel for some projections and not for others.

Where do the latitude and longitude lines meet?

They converge at the poles and are widest at the equator. At their widest points, these are about 69 miles or 111 km apart like latitude lines. Longitude degrees extend 180° east and 180° west from the prime meridian, an imaginary line dividing the earth into an eastern and western hemisphere, and meet to form the International Date Line in

What is the advantage of a conic projection map?

The major advantage of the Lambert Conformal Conic map projection is how it retains conformality. Despite how distances are reasonable accurate and retained along standard parallels, it isn’t equal-area as distortion increases away from standard parallels.

What are the vertical lines on a map called?

Longitude The vertical lines on a map are called longitude lines, also known as meridians. Unlike latitude lines, they taper (latitude lines are completely parallel, almost as if stacked on top of each other). They converge at the poles and are widest at the equator.