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3D Data

Recording 3D data implies, that the dependency of three independent parameters must be measured to gain a special analytical result. Mostly these measurement cannot be directly visibly interpreted by the analyst, because it is nearly impossible to evaluate 3-dimensional space on a 2-dimensional screen.

The software circumvents that inconvenient situation either by powerful mathematical methods, which extract meaningful results automatically or by interactive 2D data extraction. The result of such an extraction will be a set of two corresponding 2D data objects, representing that point of extraction from the 3D data object. Resulting 2D data objects can be easily handled by the user then.

Pseudo 3D Data

Very often 3D data objects are abused as collection of multiple 2D data objects. The main target of this approach is to keep data of an analytical experiment together in one data set.

A typical example are hyphenated methods like LCMS (Liquid Chromatography coupled with Mass Spectrometry) or TLCUV (Thin Layer Chromatography coupled with UV/VIS spectroscopy). The latter analytical method provides a lot of 2D UV spectra at covered distances on the thin layer plate. These 2D UV data objects are collected in one 3D data object.

The x-axis contains the covered distance of the plate, whereby the y-axis contains the measured wavelength range of interest and the z-axis the intensity or count of a particular absorption.

3D Data Example

The following figure shows a typical pseudo 3D data object with a set of two 2D data objects extracted from the x, z plane and the y, z plane. This is a measurement of cannabis extract on a thin layer plate:

(Source: J&M Analytische Mess- und Regeltechnik GmbH, Robert-Bosch Str. 83, 73431 Aalen, Germany)