Factorials in APSIM
• Why use Factorials?• Basics of Factorial Configuration• Using Met components• Using Soil Components• Using Manager Components• Advanced Factorials
APSIM Factorials
Why use Factorials?
APSIM Factorials
Single Crop for CropARM• 47 x Site• 4 x Soil• 3 x Starting Water• 3 x Cultivar• 4 x Sowing Density• 5 x Sowing Dates• 3 x Starting Nitrogen• 3 x Row Spacing• Total = 304,560 Runs
APSIM Factorials
Using Factorials
• Click the Factorial button on the Toolbar
• Right click – Add Factor/Folder
• Drag items from the simulation tree across to the factor node
APSIM Factorials
Factorial Configuration• Factorial Tree, Factor Targets
APSIM Factorials
Using Met Components• 3 ways to add Met components• Add multiple Met components
to a factor node.• Single silo component with a list
of stations.• Single met component with a
list of file names.
APSIM Factorials
Using Soil Components
APSIM Factorials
Using Manager Components• Use Sowing Rule to manage multiple
– Cultivars– Densities– Dates– Row Spacing
APSIM Factorials
Multiple Simulations (304,560)
APSIM Factorials
Advanced Factorials• Soils are not the same across all
sites.• 5 sites x 4 soils x 100 (5x4x4) sowing
options = 2,000 runs..• Add Folders & Sub Folders, which
will change the way the factorials are calculated.
• It will make a list of the lowest folder nodes in the tree.
APSIM Factorials
Advanced Factorials• Each identified folder is treated as a
single set of factorials. These sets are then added together, not multiplied.
• WA has 1 site x 1 soil x 100 sowing. Site & Soil are overridden. 100 Simulations
• SA has 1 site x 2 soils x 100 sowing. 200 Simulations.
• ALL has 3 sites and inherits all of the soils. 3 x 4 x 100 = 1200 Simulations
APSIM Factorials
Summary
• How Factorials can be used.• Factorial Configuration Basics• Using Met components.• Using Soil Components.• Using Manager Components.• Advanced Factorials.
APSIM Factorials
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