ForestElementsR 2.2.0

• Implemented S3 function get_center() that retrieves the coordinates of a meaningful center point for fe_stand childs that carry spatial information.
• The yield table related functions ytable_age_slice, ytable_max_slice, site_index, ytable_lookup, si_to_mai_age, si_to_mai_max, and stocking_level were made more safe. These functions are not designed for working with input variable vectors of length > 1. However, under certain circumstances such input would trigger a warning, but produce dubious results. Now, any attempt to provide input vectors with more than one element to these functions results in an error.
• Edited all three vignettes.

ForestElementsR 2.1.0

• Implemented automated tests for stand_sums_static()
• Revised function stand_sums_static(); new version of v_gri() allowed to simplify the code.
• Modified the important function v_gri() to make it more tolerant. In case of missing height values, it does not stop anymore but returns NA and issues a warning.

ForestElementsR 2.0.1

Revised CRAN submission

We have addressed the issues raised by Konstanze Lauseker in her review of the initial submission:

• Added references to the description field of the DESCRIPTION file.
  
• Removed the use of ::: even in internal documentation.
  
• Replaced \dontrun{} with try() for examples that intentionally generate errors.
  
• Substituted options(warn = -1) with suppressWarnings() in the automated tests.

ForestElementsR 2.0.0

Initial CRAN submission.