Krovak

Description

This projection is an oblique case of the Lambert conformal conic projection and was designed in 1922 by Josef Krovak. Used in Czech Republic and Slovak Republic. Also known as S-JTSK.

Learn more about the Lambert conformal conic projection

Projection method

Conic projection based on one standard parallel. An azimuth parameter tilts the apex of the cone from the North Pole to create a new coordinate system. A standard parallel in the new system, called a pseudo standard parallel, defines the shape of the cone. A scale factor is applied to the pseudo standard parallel to create a secant case.

Lines of contact

Two pseudo standard parallels.

Linear graticules

None.

Properties

Shape

Small shapes are maintained.

Area

Minimal distortion within the boundaries of the countries.

Direction

Local angles are accurate throughout because of conformality.

Distance

Minimal distortion within the boundaries of the countries.

Limitations

Designed strictly for Czech Republic and Slovak Republic.

Uses and applications

Used for topographic and other mapping in Czech Republic and Slovak Republic. The coordinates are usually positive to the south and west.

Parameters

Desktop

• False Easting
• False Northing
• Pseudo Standard Parallel 1
• Scale factor
• Azimuth
• Longitude of center
• Latitude of center
• X Scale
• Y Scale
• XY Plane Rotation