Difference between revisions of "Version 2.5.0"
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====Bug fix: Biomass and carbon contents were not updated in the first five-year period after fertilization ==== | ====Bug fix: Biomass and carbon contents were not updated in the first five-year period after fertilization ==== | ||
| − | This bug first occured in version 2.4 after changes were implemented in the handling of the biomass functions. The problem was that five years after a fertilization, biomass and as a cosnequence carbon contents, were not updated compared to no fertilzation. Ten years after fertilization they were updated correctly. The bug has been fixed so that the carbon and biomass five years after fertilzation is updated as expected. | + | This bug first occured in version 2.4 after changes were implemented in the handling of the biomass functions. The problem was that five years after a fertilization, biomass, and as a cosnequence carbon contents, were not updated compared to no fertilzation. Ten years after fertilization they were updated correctly. The bug has been fixed so that the carbon and biomass five years after fertilzation is updated as expected. |
<feedDate>2016-03-05</feedDate> | <feedDate>2016-03-05</feedDate> | ||
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Revision as of 18:35, 2 March 2016
Version 2.5.0
Summary
- This release note also covers changes released in updates 2.4.0.1-2.4.0.9
- Version 2.5 contains serveral improvements and bug fixes
- For PlanWise, the support for CPLEX optimization solver has been changed, see instructions in the Readme.txt file here: http://heureka2-1.slu.se/Filerepository/SolverLinks/Cplex/
New features
Help documentation on result variables and concepts
As you may know, the Heureka Wiki is used as a complement to the actual help document to give more in-depth documentation, for example about models, and to serve as a reference dictionary to certain terms and concepts. New pages are currently being added to give a concentrated overview of Result Variables and control table settings. A dictionary has also been added, which for example includes an explanation on how net present value is calculated.
Note that most of the variable explanations are more or less identical to those displayed as tool tips in the applications, but put in one place to give a better overview.
Check out the result variables documentation so far: Result Variables
...and the dictionary: Dictionary
Default regeneration species not only pine or spruce in PlanWise
When selecting regeneration species in the Regeneration Settings form in PlanWise, you have had the options to either select the site index species as converted to in Heureka (i.e. pine or spruce), or enter a specific species. This means that you have had to create a specific forest domain and a specific control category for each species group that you wanted to regenerate. As a new option, which is default, "Regeneration Species is available. This functionality is very similar to how you choose what species to retain in cleanings and thinnings. Choosing Regeneration Species means that the new generation will be regenerated with the same species as was considered the main species in the preceding rotation. The regeneration species for the first rotation is determined automatically (see Main Species in the help documentation http://www.heurekaslu.org/help/en/index.html?huvudtradslag.htm).
New result variables
- Biomass.Stem Wood Density in result group Biomass.
- Treatment.Management System in result group Treatment: Simplifies keeping track of which kind of management system that has been applied (Even-aged, Uneven-aged, or Unmanaged).
Other changes
Marklund's biomass functions now default in new projects
Marklund's biomass functions are now the default biomass function when you create a new project. Marklund's function have been found to give more logical results since they include tree height. Information on what functions have been implemented can be found here: Biomass functions
Help function for installing SQL Server Express has been removed
Heureka's applications have had a built-in help function to simplify the installation of SQL Server Express. However, this function has worked poorly due to some unresolved access right, so the help function has been dropped. Instructions on how to install SQL Server Express manually is still available in the help documentation.
CPLEX solver support modified
Due to a somewhat unclear rights for distributing certain files owned by IBM CPLEX, the buult-in for CPLEX has been removed and replaced with a plugin. If you used CPLEX, there a a couple files you must place in a certain directory to make it work, instructions can be found here: http://heureka2-1.slu.se/Filerepository/SolverLinks/Cplex/
Bug fixes
Bug fix: Third rotation not correct
In the treatment program generator (TPG), Heureka is often simulating three rotations. The third rotation has been too simplified, with a faulty timing of thinnings. Since the discounted value of that rotation is typically very small, the error should not have affected solution to any considerable extent, but the reported soil expectation values have not been correct. Read more about how soil expectation is calculated here: Heureka Dictionary: Soil expection value
Bug fix: Biomass in cut trees in precommercial thinning was not calculated
Result variables "Biomass in Cut Trees" in result group Treatment represent the amunt of biomass in cut trees, whether extacted from the forest or left as residues. For cleaning, this step was skipped but has no been fixed.
Bug fix: Biomass and carbon contents were not updated in the first five-year period after fertilization
This bug first occured in version 2.4 after changes were implemented in the handling of the biomass functions. The problem was that five years after a fertilization, biomass, and as a cosnequence carbon contents, were not updated compared to no fertilzation. Ten years after fertilization they were updated correctly. The bug has been fixed so that the carbon and biomass five years after fertilzation is updated as expected.