22 Aug 2008 – APSIM 6.1 Release notes
APSIM 6.1 release notes
15th August 2008
Models .ini files
All model .ini files are now XML files. XML is an extensible text format that can be viewed and edited using any text editor. The names of the constants haven’t changed.
- The generic PLANT model in APSIM has had more clean up work done to it. This is an ongoing process and shouldn’t affect users.
- Many of PLANT’s classes can now be explicitly instantiated from the XML file. This provides optioning functionality that is a core part of PLANT’s generic functionality.
- A new phenology model for Sweet Sorghum was introducted
- The root class has been redesigned and extended to allow multiple, distributed root systems
- A generic Phenology class has been created, capable of simulating the development of all crops
- A single Arbitrator base class, with 2 derived classes, replaces the many arbitrators in the previous version of APSIM. This work is ongoing.
- New classes for canopy phytomer and SPASS photosynthesis have been added by Neil Huth
STOCK & PASTURE
The APSIM samples that used the CSIRO Plant Industry Models STOCK and PASTURE have been simplified and made easier to use
A cleanup of SWIM model source code has done, removing redundant code and unused functionality.
The manager model now outputs less decimal places when reporting local variables to the summary file.
The barley potential grain filling rates have been dropped for all cultivars to improve the predicted / observed validation line.
A modified oats model was provided by Allan Peake.
Apsim/Oryza now uses NH4 in its calculation of total available N for daily growth.
Specification of the establishment method, sowing rate etc, is now a manager ‘sow’ line argument like the other APSIM crops. This allows the user to sow different varieties, sowing rates etc., at different times in the simulation/rotation rather than being stuck with the same establishment method for the whole rotation as was the case. The samples demonstrate this. Names follow irri conventions.
Sorghum is sensitive to heat stress at flowering.
The APSIM infrastructure has been significantly reworked allowing better multi-paddock variable and event addressing. A paddock can now use dot notation to get the value of a variable in another paddock e.g. .paddock1.wheat.lai
APSRun has been rewritten (now called ApsimRun.exe). It is now a multi-threaded application capable of scheduling and running multiple instances of APSIM on multi-CPU computers.
APSIM User Interface
- Enabling and disabling of nodes has been fixed
- Reporting frequency list is now correct
- Summer and winter Cona / U are now remembered correctly
- Tracker examples now show up when tracker is added to a paddock
- Many other small defects have been fixed.
APSIM 6.0 release notes
26th March 2008
This release of APSIM is not 100% backwards compatible with previous versions, particularly with respect to .con / .par files. The control file converter will automatically attempt to make all the necessary changes but sometimes it fails. All the changes are related to new PLANT output variable names. The complete list of old and new names is as follows:
|Old variable name
|New variable name
The following variables no longer exist: dm_dead dm_dead_leaf dm_dead_stem n_dead p_dead deadleaf_n deadleaf_p tlai_dead cep
Version 6 incorporates updated nitrogen algorithms that more realistically simulate the functional basis of nitrogen dynamics in the plant. For example, these routines allow grain nitrogen concentration and leaf senescence to be emergent properties of the effects of growth and development process on N dynamics.
Changes have been made to the default sorghum genotypes, with early, medium and late types now having on average 14, 16 and 18 leaves respectively. Users may see changes in yield for these cultivars due to these changes in phenology.
A default fertile tillering calculation has been included that will estimate the tiller number if none is added by the user. This rule only applies to the Australian sorghum cropping regions. Users can still enter this value.
APSIM user interface
- The ‘shared’ concept has now been extended to allow full inheritance. Simulations can now be inherited from other simulations with the bits that are differnet being underlined in the tree
- ‘Rules’ and ‘Logic’ in the user interface are now the same thing – called ‘manager’. Users can right click on the properties tab in a manager component and select edit. This will allow them to add/delete/rename properties
- The graph toolbox has been redesigned to use the new APSIM Report functionality. Graphs can now be dropped on an output file
- Updated the OzCot variable list.
- Simplified the code to further externalise button presses and menu clicks. APSoil and ApsimUI are now the same executable as a result.
- Added a WaterSupply sample to the user interface.
- Reworked the APSIM user interface by making all ‘actions’ (button bar + context menu) externalised to an actions.xml file. Users will notice a much improved menu when right clicking on a node in the simulation tree.
- The run window now displays error messages in red.
- Fixed bug in .apsim file changetool where variables were being stripped when converting from an old .apsim file to a new one – reported by Howard Cox.
- Removed duplicate parameter Receive_crop_runoff from ‘Dam’ in the standard toolbox – reported by Perry Poulton
- Harvesting rule in standard toolbox can now work with ozcot
- Added GRASP to standard toolbox
- Added some GCM / SOI index components to the standard toolbox
- Fixed operations crash in user interface
- Added INPUT
- Added a ‘constants’ section to the top of the output variable window. These constants’ are written to the top of an output file, on multiple lines. NB: This may break any third party tools that expect the headings to start on line 4 of an output file.
- APSIM Outlook has been reworked to facilitate rebadging work done by CSIRO Plant Industry at Narrabri.
- Minor modification to the pie chart colouring so that set colours are applied to each slice. Done for Yield Prophet.
- Major reworking of code to use more .NET forms and controls. The whole data form is now very different.
- Multi page PDF’s can now be generated from reports.
- Change the component interface so that parameters (SDML) is passed into the FORTRAN / DELPHI components as a string. This was done for AgResearch.
- .NET component interface has been reworked to use the existing APSIM component interface. New metadata tags (e.g.
- Added “detailed cash flow” analysis to economics module
- Stability changes to UI components have been made.
- Change for sandy soil mineralisation processes for Western Australia. 2 lines were added:
wfmin_index = 0.0 0.5 1.0 2.0 ! index specifying water content for water factor for mineralization
wfmin_values= 0.05 1.0 1.0 0.5 ! value of water factor function at given index values(mineralization)
- Added settable water table depth for water logging studies. Parameter is called ‘water_table’
- Continued refactoring of PLANT. All Tops and Stover calculations have now been modelled using the composite pattern.
- dm_green, dm_dead, dm_senesced, n_green, n_senesced, n_dead, p_green, p_senesced, p_dead and dlt_dm_green are now scalars rather than an array of values for each part. To output dm_green for the leaf part use: dm_green_leaf.
- Added a set_stage event to Plant phenology.
- Correction to remove biomass phenology and N
- Added new genericArbitratorXY class to plant to allow partitioning rules to be specified using interpolation functions.
- Bug fixes to cohorting leaf part and some refactoring of plant utilities.
- The RootPart class has be refactored so that it is self contained. As part of this work a NoRoot class can be instantiated that meets the crops water and nitrogen demands i.e. a potential crop can be easily simulated.
- A new StoragePart has been added to PLANT to facilitate work on a Potato module for APSIM.
- A new FloretPart has been added to PLANT and broccoli modified to use it.
- The arbitrator part in PLANT has been made more generic with a lot of its functionality being externalised to the .ini file.
- Added stage x digestibility table for several crops (e.g. lablab, wheat, lucerne, sweet sorghum)
- Removed all dead pools in PLANT
- Many of PLANTS output variables have been renamed
- A new pool and composite pool class has been added to PLANT
- Many changes have been made to PLANT to allow grazing
- Some corrections have been made to the P and SW stress
- A start has been made on a new photosynthesis class
- Lupin validation added
- A new lettuce model has been added
- Added new variety: Wintaroo
- Corrected p_conc_init names in the weed.ini file.
- Added methods for parameterising SWIM using soilwat-type parameters
- Allow replacement of multiple values of a variable e.g. soilwat2 set sw = sw1 sw2 sw3 (mm)
- The manager module can now handle 100 character values for its local variables.
- Some manager arithmetic has been fixed
- Cotton is seen as a crop and works properly in rotations
- Warnings are given when an undefined variable is used in an expression.
- A revised version of Potato from Shaun Lisson.
- Triazine tolerance has been built into the cultivars in the canola.ini file. It is now no longer necessary to specify this at sowing time.
- Added canola validation
- Fixed defect where a date format on a variable line wouldn’t work e.g. today as Date format dd-mmm
- The REPORT module now outputs less than 3 decimal places for some units.
- Users can now specify units for output variables with unit conversion happening automatically. Supported units: g/m2, kg/ha, t/ha
- The SILOInput component now has better error handling in timeout situations when communicating with SILO.
CSIRO Plant Industry PASTURE and STOCK
- SILO was modified so that it outputs solar radiation units as MJ/m^2 rather than MJ/m2. When APSIM met files have these revised units, PASTURE runs in APSIM properly.
- Changed all references to Farmwi$e to now point to AusFarm
- The Rickert and McKeon grazing model has been resurrected.
- A usage sample is in its installation directory.
- Fixed kill_crop in maize
- Sysbal has been modified to report less false positives, particularly from PLANT
- New cultivars have been added from CSIRO Plant Industry at Narrabri
- The .ini file has been modified to fix the ‘sprayed’ class
- Oryza is now released as part of APSIM, and works in ApsimUI.
- Some minor modifications from Don Gaydon have been added.
- A usage sample is in the installation directory.