NIR-Chemometrics

Plotting NIR spectra with ggplot2

In this post we prepare the NIR dataframe in a long format to plot it with ggplot2
Apr 25, 2025
José Ramón Cuesta

New Soil Near Infrared Training Material (part 1)

In this post we will load the NIR data and prepare it for visualization
Apr 24, 2025
José Ramón Cuesta

SVM - NIT tutorial (part 17)

R
NIT Tutorial
SVM
Using Support Vector Machines (SVM) to build the model
Mar 28, 2023
José Ramón Cuesta

PLS - NIT tutorial (part 16)

R
NIT Tutorial
Random Forest
using random forest to build the model
Mar 1, 2023
José Ramón Cuesta

PLS - NIT tutorial (part 15)

R
NIT Tutorial
PLS
Improving statistics with Cubist
Jan 30, 2023
José Ramón Cuesta

PLS - NIT tutorial (part 14)

R
NIT Tutorial
PLS
Improving PLS Models with more terms
Jan 30, 2023
José Ramón Cuesta

PLS - NIT tutorial (part 13)

R
NIT Tutorial
PLS
Developing our firsts PLS Models
Jan 9, 2023
José Ramón Cuesta

PCA - NIT tutorial (part 12)

R
NIT Tutorial
PCA
Looking for outliers in the intercorrelation plots
Dec 19, 2022
José Ramón Cuesta

PCA - NIT tutorial (part 11)

R
NIT Tutorial
PCA
Checking how the RMD is related to parameters extreme samples
Dec 16, 2022
José Ramón Cuesta

PCA - NIT tutorial (part 10)

R
NIT Tutorial
PCA
looking for outliers with Mahalanobis distances in the Principal Components Space
Nov 17, 2022
José Ramón Cuesta

PCA - NIT tutorial (part 9)

R
NIT Tutorial
PCA
Continue exploring the Principal Component Analysis
Nov 2, 2022
José Ramón Cuesta

PCA - NIT tutorial (part 8)

R
NIT Tutorial
PCA
Running Principal Components Analysis on the spectra matrix
Oct 21, 2022
José Ramón Cuesta

Near Infrared Transmitance Tutorial (part 7)

R
NIT Tutorial
Removing scatter
Math-treatments
We can use derivatives to remove baseline offsets, alone or combined with other scatter math treatments
Oct 19, 2022
José Ramón Cuesta

Near Infrared Transmitance Tutorial (part 6)

R
NIT Tutorial
Removing scatter
Math-treatments
The use of linear or quadratic detrend alone or combined with SNV will be treated in this post
Oct 14, 2022
José Ramón Cuesta

Near Infrared Transmitance Tutorial (part 5)

R
NIT Tutorial
Removing scatter
Math-treatments
This time we use the Multiple Scatter Correction algorithm ro remove the scatter
Oct 5, 2022
José Ramón Cuesta

Near Infrared Transmitance Tutorial (part 4)

R
NIT Tutorial
Removing scatter
Math-treatments
Along the coming post we will several math treatments trying to improve the correlation between the predictors and the outcomes. In this one SNV
Oct 3, 2022
José Ramón Cuesta

Near Infrared Transmitance Tutorial (part 3)

R
NIT Tutorial
Collinearity
Let´s check the correlation between the outcomes, between the predictors and between outcomes and predictors
Sep 29, 2022
José Ramón Cuesta

Near Infrared Transmitance Tutorial (part 2)

R
NIT Tutorial
Let use tidyverse to see the spectra and histograms
Sep 28, 2022
José Ramón Cuesta

Near Infrared Transmitance Tutorial (part 1)

R
NIT Tutorial
Plot the near infrared transmitance spectra of meat samples and have a look to the histograms of the main parameters using classic R code
Sep 26, 2022
José Ramón Cuesta

Welcome To My Blog

news
This is the first post in a Quarto blog. Welcome!
Sep 23, 2022
José Ramón Cuesta
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