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Software to support ISO/TS 28037:2010E

This software supports the ISO Technical Specification (TS) Determination and use of straight-line calibration functions.

The software allows the user to fit a straight-line calibration function to a set of (X, Y) measurement data, allowing for any uncertainty structure associated with the data. Then, given measured Y-values and their associated uncertainties, the calibration function can be used to obtain estimates of the corresponding X-values and their associated uncertainties.

The uncertainty structures that can be accounted for are:

  • Uncertainties are associated with the measured Y-values only.
  • Uncertainties are associated with both the measured X- and Y-values and all covariances associated with the data are zero.
  • Uncertainties are associated with both the measured X- and Y-values and there are covariances associated with pairs of corresponding measured X- and Y-values.
  • Uncertainties are associated with the measured Y-values only and there are covariances associated with pairs of measured Y-values.
  • Uncertainties are associated with the measured X- and Y-values and there are covariances associated with pairs of measured values.

The software was developed in MATLAB, is provided in both M-file and published HTML file formats, and is downloaded as a zip file. Please start by reading the file README.txt within that zip file.


17 Nov 2014
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