# Measuring section

The linear sequence of measuring points in order to record the local course of a physical phenomenon or a geometric shape is referred to as a measuring profile or measuring section (previously also called measuring section ) . Such measurements are mainly carried out in technical and natural sciences.

A second meaning of the term is the route (beeline, sight ) along which an exact distance measurement is made.

If an area measurement is to be made instead of a profile , either intersecting routes are created or the area is driven in a meandering manner.

The evaluation of measurement profiles can be done in different ways:

• geometrical: by drawing a diagram (measurement curve) and visual interpretation
• Averaging of all measurements and determination of how far the individual measurements deviate from the mean
• linear regression : calculation of a linear trend (rise or fall of the measurement curve)
• quadratic regression: trend and curvature of the measurement curve
• Fourier analysis or FFT : Analysis of periods in the measurement curve
• 2D - model calculation : approximate model of the phenomenon and its specific adaptation to the areally distributed measurements
• 3D model: interpretation of the measured values ​​in the third dimension (e.g. into the interior of a solid or into the depths of the earth's crust).

Examples for the creation of measuring sections are: