Linear Units

GeoCrew

Linear units are used for measuring distance, such as length, width, breadth, depth or height. Linear measurements are internally kept in meters, and converted to and from specified linear unit. Units of measure settings provide following linear units properties:


Unit


GeoView supports following linear units:


Name

Symbol

Description

Meter

m

Meter, a SI base unit of measurement.

Foot

ft

International foot, where 1 ft = 0.3048 m.


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: