BUCHI NIRCal - Manual (Page 68)

NIRCal 5.5 Software Manual
68 NIRCal 5.5 Manual, Version A
case several minimum SECV exist. Use the Factor Selection Wizard. The selected number of
secondary PCs will be red.
Beside these plots there are several other plots to choose outlier spectra or to make a better view of
the results. The plots under has the following plots:

Property Residuum:
The property residuum of each spectra showed with the final calibration.

Spectra Residuals vs. Leverages:
The final calibration result with the used primary PCs are showed for the calibration spectra.

CV Spectra Residuals vs. Spectra Residuals:
The spectra residual with the final calibration against the residuals with the CV calculation
results are compared. Big difference shows, which spectra groups can be outliers.

Spectra Residuum:
= pretreated spectrum-reconstructed spectrum. The residuum of the final calibration is shown.

CV Leverages vs. Leverages:
The leverages for the final calibration against the CV leverages are ploted.

CV Spectra Residuals vs. CV Leverages:
Large residuals together with large leverage (points in the upper right square) are typical for
possible outliers.