ABA-model-calibration.md

+This tutorial presents `R` code for the calibration and validation of prediction models with the so-called area-based method, which aims at calibrating relationships between metrics computed from airborne laser scanning (ALS) point clouds and forest stand parameters measured on field plots.
+
+The following files are provided:
+
+* [Rmarkdown source](https://gitlab.irstea.fr/jean-matthieu.monnet/lidartree_tutorials/-/blob/master/area-based.2.model.calibration.Rmd),
+* **[ABA model calibration tutorial in html](https://gitlab.irstea.fr/jean-matthieu.monnet/lidartree_tutorials/-/raw/master/export/area-based.2.model.calibration.html?inline=false)**,
+* [ABA model calibration tutorial in pdf](https://gitlab.irstea.fr/jean-matthieu.monnet/lidartree_tutorials/-/blob/master/export/area-based.2.model.calibration.pdf),
+* datasets required to run the source code are also available on the repository.
+
+Change log
+
++ Mar 2021: first version