Angular units are used for measuring angles of rotation or bearings. Angular measurements are internally kept in radians, and converted to and from specified angular unit. Units of measure settings provide following angular units properties:

Unit

GeoView supports following angular units:

Name |
Symbol |
Description |

Radian |
r |
Radian, a SI base unit of measurement. |

Degree |
° |
Degree, where 1° = (π / 180) r. |

Gradian |
g |
Gon, grad or gradian, where 1g = (π / 200) r. |

Precision

GeoView keeps measurement data using IEEE floating-point precision, which is approximately 16 decimal digits. Displaying values on-screen using full precision is not really convenient, so you may set actual number of displayed digits using Precision property setting. Please note that numeric precision truncates the values, not rounding them. For example:

Display precision "0":

Actual value = 100.45

Displayed value = 100

Display precision "0.0000":

Actual value = 100.4534932878

Displayed value = 100.4534

Rounding

Rounds a decimal value to the number of fractional digits specified in Precision property, for the on-screen displaying purposes. GeoView supports following types of decimals rounding:

- None - no rounding, values are displayed using default precision.
- Away from zero - when a number is halfway between two others, it is rounded towards the nearest number that is away from zero.
- To even - when a number is halfway between two others, it is rounded towards the nearest even number.

Representation

Special representation of the angular value depending on specified angular Unit property:

- Default - standard angle representation.
- DMS.s - specific notation for decimal degrees using decimal point.

Base

Base angle specifies the value for the zero (or start) angle.

Direction

Defines the direction in which positive angles get calculated:

- Clockwise - calculates positive angles in the clockwise direction.
- Counter-clockwise - calculates positive angles in the counter-clockwise direction.