Six standalone example configurations ship with MIDAS, under each folder’s own examples/ subfolder (identical in matlab/, octave/, and GUI/). Each is a complete parameter set - not a diff on top of the default - and every field it does NOT use for its particular mode combination is set to NaN, so it’s obvious at a glance what actually matters for that run. Together they exercise every mode switch in the model.

Example1_Baseline

The recommended starting point: the fully automated, phase-diagram-driven configuration.

• P-T path via explicit peak timing (PTmode='peak')
• Major-element equilibrium from the Perplex phase diagram (eqMode='PD')
• Mn partitioning also phase-diagram-derived (MnMode='PD', MniBMode='PD')
• Spherical growth geometry (ndim=3)

addpath('examples');
params = Example1_Baseline();
R = MIDAS_Main(params);

Animates the crystal/matrix interface position and composition profile evolving along the P-T-t path; frame resolution and grid are trimmed down here purely to keep the GIF small.

Example2_PolyEquilibrium

Runs with no phase-diagram file needed at all.

• Major-element equilibrium from a 3-point bilinear polynomial fit (eqMode='poly') instead of a Perplex table
• Mn partitioning and matrix reservoir specified directly (MnMode='fixed', MniBMode='manual')
• Also demonstrates recordMode='iteration' (record every N iterations) instead of Example1’s recordMode='time', and isoRefMode='bulk' instead of 'core'

Example3_ThermalBump

Demonstrates the older, simpler P-T path parameterization.

• PTmode='Tbump': linear T and P paths with a single symmetric thermal pulse (delT) added on top, instead of Example1’s explicit independently-timed T/P peaks
• Major-element equilibrium and Mn partitioning still phase-diagram-driven, as in Example1
• Also demonstrates isoRefMode='wholerock'

Example4_ManualPartitioning

A hybrid configuration.

• Major elements still come from the phase diagram (eqMode='PD', as in Example1)
• Mn partitioning/reservoir specified directly instead (MnMode='fixed', MniBMode='manual')
• Useful when you trust the phase diagram for major-element equilibrium but want direct control over the trace/minor-element inputs

Example5_PlanarGeometry

Same fully automated configuration as Example1, but ndim=1 (planar growth) instead of ndim=3 (spherical) - e.g. for a tabular crystal or a 1-D approximation.

Example6_CylindricalGeometry

Same fully automated configuration as Example1, but ndim=2 (cylindrical growth) instead of ndim=3 (spherical).

Same animation as Example1_Baseline’s above, for the cylindrical-growth configuration.

Coverage at a glance