# Posts Tagged ‘ "R" Chemometrics ’

## NIT: Fatty acids study in R – Part 005

March 9, 2012
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There are several algorithms to run a PLS regression (I recommend to consult the books: “Introduction to Multivariate Analysis in Chemometrics - Kurt Varmuza & Peter Filzmozer” and “Chemometrics with R – Ron Wehrens”).We are going to use ...

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## NIT: Fatty acids study in R – Part 004

March 7, 2012
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It is clear that MSC does not remove the entire scatter in the raw spectra, so some of the information is hidden by the scatter. Improvement of the sample presentation will help to remove the scatter.We know that the first loading is much related to th...

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## NIT: Fatty acids study in R – Part 003

March 5, 2012
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As I told you I´m a beginner in "R", so I realize that I have to prepare my data a little bit in order to continue from my previous post ( NIT: Fatty acids study in R - Part 002) after getting some errors. Anyway I´m really fascinated ...

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March 2, 2012
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## PCA for NIR Spectra_part 002: "Score planes"

February 23, 2012
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The idea of this post is to compare the score plots for the first 3 principal components obtained with the algorithm “svd” with the scores plot of  other chemometric software (Win ISI in this case). Previously I had exported the yarn spectra t...

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