Angular Units

GeoCrew

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:



Representation


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



Base


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


Direction


Defines the direction in which positive angles get calculated: