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# Basic 3D Measurement Functions

This page describes all basic measure functions. For semi-automated measurements, see Semi Automated 3D Measurement Functions.
It is recommended to read first 3D Measurements.

## Functions

Overview of all 3D measurements.

• Conditions : Only if applicable.
• How to measure : Sequences of coordinate measurements to complete 3D measurement.

#### Position

Point
Point measurement.
How to measure : (1) point.
Result : xyz coordinate of measured point.

Point height to ground
Point measurement and height above approximate street surface1).
Conditions : Mapping Run including definition of camera height above ground. Street-level image view.
How to measure : (1) point.
Results : xyz coordinate of measured point and height above approximate street surface.

Point drop to ground
Point measurement dropped to approximate street surface and height above this surface. 2).
Conditions : Mapping Run including definition of camera height above ground. Street-level image view.
How to measure : (1) point.
Results : xyz coordinate of measured point dropped to approximate street surface and height above this surface.

Point height to horizontal reference plane
Point measurement and height above horizontal reference plane.
How to measure : (1) horizontal ground reference plane point, (2) point of interest.
Results : xyz coordinate of measured point and height above horizontal reference plane.

Point drop to horizontal reference plane
Point measurement dropped to horizontal reference plane and height above this reference plane.
How to measure : (1) horizontal ground reference plane point, (2) point of interest.
Results : xyz coordinate of measured point dropped to horizontal reference plane and height above this plane.

Center of circle by 3 points on circumference
Point measurement
How to measure :
Results :

#### Distance

Distance XYZ
Distance measurement, straight line between 2 coordinates.
How to measure : (1) start point, (2) end point.
Results : xyz distance between measured points, slope and slant.

Distance XY and Z
Distance measurement, straight line between 2 coordinates.
How to measure : (1) start point, (2) end point.
Results : xyz, xy and z distance between measured points, slope and slant.

Distance XYZ, XY and Z
Distance measurement, straight line between 2 coordinates.
How to measure : (1) start point, (2) end point.
Results : xy and z distance between measured points, slope and slant.

Vertical distance
Distance measurement, straight line between 2 coordinates.
How to measure : measure 2 coordinates.
Results : z distance between measured points.

Horizontal distance
Distance measurement, straight line between 2 coordinates.
How to measure : measure 2 coordinates.
Results : xy distance between measured points.

Perpendicular distance to reference line
Perpendicular distance measurement between a horizontal reference line and a point.
How to measure : (1) reference line 1st point, (2) reference line 2nd point, (3) point of interest.
Results : xyz, xy and z perpendicular distance between reference line and measured point, slope.

Fixed horizontal distance parallel to reference line
How to measure :
Results :

Perpendicular distance to reference plane
Perpendicular distance measurement between a reference plane and a point.
Conditions : Point cloud required, 3D Hover is used to get reference plane from initial point measurement.
How to measure : (1) reference plane point, (2) point of interest.
Results : xyz distance and xyz coordinate of measured point.

Vertical distance with ground
Distance measurement, straight line between 2 coordinates.
How to measure : measure 2 coordinates, the first one on the ground.
Results : z distance between measured points.

#### Line

Free line
Poly-line measurement.
How to measure : (1) 1st point, (2) optional intermediate points, (3) last point by stop measurement.
Results : xyz, xy en z length.

Arc with 3 points
How to measure :
Results :

#### Catenary Curve

Catenary Curve
Catenary curve measurement.
How to measure : (1) catenary start point, (2) catenary end point, (3) any point on catenary curve.
Results : Distance over curve, clearance and span.

Catenary Curve to horizontal reference plane
Catenary curve measurement and lowest clearance to horizontal ground reference plane.
How to measure : (1) horizontal ground reference plane point, (2) catenary start point, (3) catenary end point, (4) any point on catenary curve.
Results : Distance over curve, clearance and span, x, y, z.

Free catenary curves with varying spacing
Continued measurement of multiple cables with varying spacing. How to measure :
(1a) start of first cable, (1b) start of second cable, (1c) start of third cable, …
(2a) a point on first cable, (2b) a point on second cable, (2c) a point on third cable, …
(3a) end of first cable segment / start of extended first cable segment, 3b) end of second cable segment / start of extended second cable segment, (3c) end of third cable segment / start of extended third cable segment, …
(4) Double click last coordinate measurement and ends object measurement.

Free catenary curves with fixed spacing
Continued measurement of multiple cables with fixed spacing. All cables are parallel to first cable. How to measure :
(1a) start of first cable, (1b) start of second cable, (1c) start of third cable, …
(2) a point on first cable
(3) end of first cable segment / start of extended first cable segment
repeat step (2) and (3)
(4) Double click last coordinate measurement and ends object measurement.

#### Area

Free area
Area measurement.
How to measure : (1) 1st point, (2) 2nd point, (3) optional intermediate points, (4) last point by stop measurement.
Results : xyz, xy area and xyz, xy, z length.

Free rectangular area measurement with 3 points
How to measure :
Results :

Vertical rectangular area with 2 points
Vertical rectangular area measurement defined by 2 coordinates.
How to measure : (1) bottom left corner, (2) diagonal opposite corner.
Results : xyz area.

Vertical rectangular area with 3 points
Vertical rectangular area measurement defined by 3 coordinates.
How to measure : (1) any corner, (2) horizontal adjacent corner, (3) any point on segment opposite to segment (1,2).
Results : xyz area.

Vertical rectangular area with 2 points on horizontal edge and 1 intersection
How to measure :
Results :

Horizontal rectangular area
Horizontal rectangular area measurement defined by 3 coordinates. How to measure : (1) any corner, (2) adjacent corner, (3) any point on segment opposite to segment (1,2). Results : xy area.

Squared area with 4 points horizontal with ground
Horizontal rectangular area measurement defined by 4 coordinates.
How to measure : (1) measure one point on ground, as distance, (2) measure one side at the desired height, as distance, (3) measure any point on the opposite side.
Results : xyz area, distance Z

Free horizontal area with ground
Vertical area measurement defined by multiple coordinates.
How to measure : (1) measure one point on the ground (2) measure sequence of coordinates at the desired height, (3) stop
Results : xyz area, distance Z

#### Circle

Circle by 3 points on circumference
How to measure :
Results :

How to measure :
Results :

Vertical circular area with 3 points
How to measure :
Results :

Horizontal circular area measurement defined by 2 coordinates.
How to measure : (1) center of the object (2) any point on the circle perimeter
Results : xyz area, xyz lenght, xyz radius, x center, y center, z center

Horizontal circular area with 3 points
Horizontal circular area measurement defined by 3 coordinates.
How to measure : (1) any point on the circle perimeter (2) any point on the circle perimeter (3) a point on the circle perimeter to define the arc
Results : xyz area, xyz lenght, xyz radius, x center, y center, z center

#### Volume

Rectangular volume
Rectangular volume measurement.
How to measure : (1) measure baseline as 2 points, (2) measure any point on the diagonal opposite baseline to finish measurement.
Results : Volume, baseline 1, baseline 2 and height.

Aquared volume with ground
How to measure :
Results :

1) , 2)
Approximate street surface : Street surface z value is derived of the photo position's Z coordinate and the height offset of the camera above the street surface, see 3D Mapping Data Preparation and Import Templates and Orbit Mapping Resources - Structure and Configs