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en:software:r4m:r4mcubage:start [2026/06/18 14:21] – joaoluisen:software:r4m:r4mcubage:start [2026/06/18 14:26] (current) – joaoluis
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 ===== About R4Mcubage ===== ===== About R4Mcubage =====
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 The packages has functions to perform the following operations: The packages has functions to perform the following operations:
- * computation of the total volume of stems; +  * computation of the total volume of stems; 
- * interpolation of stem measures such as:+  * interpolation of stem measures such as:
      * diameter at a given height/position of the stem, and      * diameter at a given height/position of the stem, and
      * height/position at the stem for a given diameter.      * height/position at the stem for a given diameter.
- * computation of merchantable volume as: +  * computation of merchantable volume as: 
-     – merchantable volume up to a given merchantable diameter of the stem, +     * merchantable volume up to a given merchantable diameter of the stem, 
-     – merchantable volume up to a given merchantable height at the stem, +     * merchantable volume up to a given merchantable height at the stem, 
-     – merchantable volume for wood use classes defined as combinations of a minimum log diameter and a log length. +     * merchantable volume for wood use classes defined as combinations of a minimum log diameter and a log length. 
- * computation of ratio of the merchantable volume to the total volume of the stem. +  * computation of ratio of the merchantable volume to the total volume of the stem. 
- * computation of form factor (empirical form factor) and form indices for the stem as a whole and for stem sections.+  * computation of form factor (empirical form factor) and form indices for the stem as a whole and for stem sections.
  
 For decurrent trees data, some of the above computations can not be performed. The package also has some utility and plotting functions to help manage and analyse data from tree cubature. For decurrent trees data, some of the above computations can not be performed. The package also has some utility and plotting functions to help manage and analyse data from tree cubature.
  
-===== About R4Mcubage ===== 
---------------------------------------------- 
  
-The **R** package **R4Mcubage** is a set of functions (**S3** language) to treat data from the measurement of the stem/branch sections of trees.  It deals with excurrent and decurrent trees and can compute the tree wood containt in terms of following stem volume: 
-  * total volume; 
-  * merchantable volume for a given set of minimum merchantable stem diameters; 
-  * merchantable volume for a given set of merchantable heights; and 
-  * merchantable volume for a given set of combinantions of log diameter-length. 
  
-For excurrent trees, it also interpolates stem measurements (for individual stems) based on the relationship of  diameter-height along the stem to generate: +===== Objective =====
-  * the stem diameter for a given height along the stem (absolute or relative to tree's total height); and +
-  * the height along the stem for a given diameter (absolute or relative to tree's DBH). +
- +
-**R4Mcubage** computes the merchantable volume ratio for: +
-  * excurrent trees as the cumulative volume along the stem as function of diameter-height; and +
-  * decurrent trees as the cumulative volume for the whole stem as a function of diameter. +
- +
-Two functions for plotting make easy to plot: +
-  * stem profile (excurrent trees) as absolute values of diameter-height or as taper equation data; +
-  * branch profile (decurrent trees) as abolute values of diameter-height; +
-  * merchantable volume ratio as function of diameter (excurrent/decurrent) or as function of height (excurrent only). +
-A interactive argument of the function for profile plotting allows the visual inspection of individual stems one-by-one for checking problematic data. +
- +
- +
-\\ +
-===== R4Mcubage's Objective =====+
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 Download, install and use __**at your own risk**__: Download, install and use __**at your own risk**__:
-    * //**Pacote em desenvolvimento**// as a **.tar.gz** file.+    * //**Package under development**// as a **.tar.gz** file.
     * Tutorial PDF.     * Tutorial PDF.
  
 \\ \\
-===== Contact =====+===== Authors and Contact =====
 --------------------------------------------- ---------------------------------------------
 +
  
 E-mail in //insilvaarbores.com.br//. E-mail in //insilvaarbores.com.br//.