Mapping science

Mapping science

The systemic study of the processes and designs involved with map making.

Industry: Earth science

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Mapping science

Relative accuracy

Earth science; Mapping science

(1) The square root of the average of the sum of the squares of the differences between (a) a set of measured or calculated values and a (b) set of corresponding correct values, divided by the ...

Central angle

Earth science; Mapping science

(1) The angle, at the centre of a circular arc, included between the radii which pass through the beginning and end of the arc. This angle is equal in size to the change in direction of the ...

Double zenith angle

Earth science; Mapping science

The angle obtained by pointing the telescope of a transit at an object, reading the angle on the vertical circle, then reversing the instrument to put the vertical circle on the other side of the ...

Inertial azimuth

Earth science; Mapping science

An azimuth measured with respect to lines whose directions are established by a gyrocompass. In particular, an azimuth measured using a gyrotheodolite (gyroscopic theodolite).