Version 2.19

Version 2.19

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English  • svenska

2022-09-15

Summary

Large performance improvements during simulation due to less aggressive garbage collection. Benchmarks can be found on the Version benchmarking page. Updated to latest version of Zimpl and LpSolve for faster optimization. Added support for Gurobi 9.5. New importer for data exported from harvester simulator (Oryx). Numerous bug fixes.

New Features

Import data from harvester simulator

Heureka can now import data from harvester simulators. At the moment, only Oryx' simulator is supported. Open the import wizard from Data Management -> Import -> Import Harvester Simulator Data. Some additional stand variables are required when importing this data (plot area, mean age, site index species and site index).

Harvested Wood Products

Heureka can now project the carbon pool in Harvested Wood Products from the forest analysis area as a result of extracted volumes per assortment, and assumptions of the longevity of the derived products.

Improvements

Simulation performance improvements

By switching to server optimized garbage collection, simulation performance has seen a large improvement due to higher CPU utilization and less time spent waiting for GC. The cost of this is higher memory usage during simulation. Hopefully this doesn't cause too much issues. It is still possible to set the maximum number of threads under Settings -> Performance. This is recommended if you intend to be using your computer for other work during the simulation and want Heureka to leave system resources for other tasks. See the Version benchmarking page for performance comparisons between this version and older versions.

Optimization performance improvements

Updated Zimpl and LpSolve to the latest versions. This should result in both faster building of the optimization model and solving when using LpSolve as solver. There were also a problem with the previous LpSolve version raising an error for relatively simple problems. Added support for Gurobi 9.5

Harvest clusters calculated without treatments

Harvest clusters are now calculated for all treatment units, instead of only ones that had a final felling treatment performed. The previous restriction was in place to limit the size of the calculation, but proved to only marginally improve performance.

Random Seed

The way Heureka handles random number seeds have been changed to ensure that random number generated are independent of each-other. This might lead to slightly different output (compared to earlier Heureka versions) from some modules even if the module itself has not been changed. If a Treatment Program is generated with seed 0 (default) Heureka has always generated a random seed to use in simulations. For new simulations this seed can be found in both the simulation report and simulation properties.

Optimization Guid in information window

The Guid (a unique identifier) of an optimization is now shown in the optimization information window. This can be useful when fetching optimization results from the database using external tools.

New result variables: Volume harvested

Two new result variables, "Volume Harvested Total (m³sk)" and "Volume Harvested per species (m³sk)", have been added to TreatmentData

Bug Fixes

• Fixed sorting of simulation results in RegWise. Now sorted by simulation date in descending order
• Areas projected to a future date lacked some data that was present in the original data
• Some results were incorrectly calculated after a storm felling thinning
• Map properties that the user had created would disappear when selecting a new simulation or optimization
• Now sorts the selected result types in TPG Results view to be consistend across all simulations
• Overstorey trees are no longer removed automatically when projecting to a future date. A checkbox in the projection dialogue can toggle this behaviour
• "Other Area" was incorrectly calculated in initial state overview table
• Fixed infinite loop when calculating moose sapling damage
• Fixed incorrectly calculated dead wood density and biomass. When simulating decomposing dead wood, biomass was not assigned to the correct size class. This fix affects what decay class initial dead wood is sorted in, as well as the amount of carbon in dead wood.
• Volume of removed overstorey trees is now considered when calculating the target felling volume in RegWise
• Fixed incorrect syntax when building an optimization model with a circumference parameter
• Sometimes when opening a project, the area selection would not be entirely intact
• Stochastic implementation of sapling damage model was not ready for use and has been disabled. Now always uses deterministic sapling damage

Details from bugtracker

Id	Category	Severity	Summary	Fixed_in_version	Resolution	Comment
0000534	Visualisation StandWise	minor	Error thrown on screenshot	2.19.0	fixed	Error thrown on screenshot
0000508	TPG	major	Creating dead wood from dead trees gives wrong results	2.19.0	fixed	Creating dead wood from dead trees gives wrong results
0000529	TPG	minor	Spruce bark beetle index too high	2.19.0	fixed	Spruce bark beetle index too high
0000505	TPG	trivial	Results Types column sort is inconsistent	2.19.0	fixed	Results Types column sort is inconsistent
0000538	RegWise simulation	minor	No treatments on NC units dependent on parents' treatments in checkerboard felling	2.19.0	fixed	No treatments on NC units dependent on parents' treatments in checkerboard felling
0000509	RegWise simulation	minor	Wind throw proportion, mortality volume and biomass incorrectly calculated	2.19.0	fixed	Wind throw proportion, mortality volume and biomass incorrectly calculated
0000518	RegWise simulation	minor	Incorrect regeneration species in RegWise when regenerating due to land use change	2.19.0	fixed	Incorrect regeneration species in RegWise when regenerating due to land use change
0000515	RegWise simulation	minor	Volume from removal of overstorey is not included when calculating target final felling volume in RegWise	2.19.0	fixed	Volume from removal of overstorey is not included when calculating target final felling volume in RegWise
0000525	RegWise simulation	minor	Stocastic sapling damage incorrectly calculated?	2.19.0	fixed	Stocastic sapling damage incorrectly calculated?
0000536	RegWise simulation	feature	Show TreatmentUnitExternalData in initial state and simulation results	2.19.0	fixed	Show TreatmentUnitExternalData in initial state and simulation results
0000493	Optimization	minor	User submitted report - No feasible solution with LPSolve	2.19.0	fixed	User submitted report - No feasible solution with LPSolve
0000539	Optimization	feature	Feature: Add support for Gurobi 9.5	2.19.0	fixed	Feature: Add support for Gurobi 9.5
0000520	Optimization	feature	Remove final felling requirement from cluster parameters	2.19.0	fixed	Remove final felling requirement from cluster parameters
0000521	Optimization	feature	Add OptimizationGuid to Optimization info	2.19.0	fixed	Add OptimizationGuid to Optimization info
0000502	Optimization	minor	Simulation results are incorrectly sorted in RegWise table view	2.19.0	fixed	Simulation results are incorrectly sorted in RegWise table view
0000510	Map	major	Map properties disappear when optimization is changed	2.19.0	fixed	Map properties disappear when optimization is changed
0000501	Growth / production	major	Framskrivning av Ipak-data ger negativ tillväxt	2.19.0	fixed	Framskrivning av Ipak-data ger negativ tillväxt
0000513	Growth / production	minor	High sapling moose damage will sometimes cause the simulation to stall	2.19.0	fixed	High sapling moose damage will sometimes cause the simulation to stall
0000527	General	minor	When opening a RegWise project with inventory years, the analysis area is not intact	2.19.0	fixed	When opening a RegWise project with inventory years, the analysis area is not intact
0000537	General	tweak	Bark thickness model unnecessary memory allocations	2.19.0	fixed	Bark thickness model unnecessary memory allocations
0000517	General	feature	Garbage collection change	2.19.0	fixed	Garbage collection change
0000528	General	tweak	Parallelization optimization	2.19.0	fixed	Parallelization optimization
0000402	General	minor	User Submitted Report - Incorrect Syntax	2.19.0	fixed	User Submitted Report - Incorrect Syntax
0000530	General	minor	Getting ValueData is slow	2.19.0	fixed	Getting ValueData is slow
0000512	General	minor	"Other area" is not reset when selection changes	2.19.0	fixed	"Other area" is not reset when selection changes
0000522	General	feature	Add information regarding which random seed was used	2.19.0	fixed	Add information regarding which random seed was used
0000514	General	feature	New result variables: Volume Harvested	2.19.0	fixed	New result variables: Volume Harvested
0000524	General	major	Import Stand Register and Map unhandled exception	2.19.0	fixed	Import Stand Register and Map unhandled exception
0000535	General	minor	Total CO2 from HarvestedWoodProducts is wrong	2.19.0	fixed	Total CO2 from HarvestedWoodProducts is wrong
0000516	General	minor	Soil carbon stock	2.19.0	fixed	Soil carbon stock
0000526	General	minor	Simulation report and optimization info fail to render	2.19.0	fixed	Simulation report and optimization info fail to render
0000533	Data import	minor	Fel i framskrivning till nytt startdatum om bestånd har överståndare eller naturvårdsträd	2.19.0	fixed	Fel i framskrivning till nytt startdatum om bestånd har överståndare eller naturvårdsträd
0000503	Data import	feature	New feature: Import data from harvester simulator	2.19.0	fixed	New feature: Import data from harvester simulator
0000504	Data import	minor	Areas projected to a future date are lacking some data fields present in the original data	2.19.0	fixed	Areas projected to a future date are lacking some data fields present in the original data