Integrate OpenMDAO unit system

adamnagel / qudt-for-domain-tools

Establishing consistent unit identities in a world of whirling chaos

GNU Lesser General Public License v2.1

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Closed adamnagel closed 10 years ago

adamnagel commented 11 years ago

Tasks

Survey the unit system in OpenMDAO
Create an ontology language for OpenMDAO units
In qudt4dt ontology, set OpenMDAO root "Unit" class as a subclass of DomainToolUnit
Create a Python script for converting OpenMDAO units to individuals in ontology
Create a CSV file for mapping OpenMDAO units to QUDT units
Modify build_ontologies.py to do these things:
- Run Item 4
- Convert CSV to OWL XML
- Load this ontology to the database

adamnagel commented 10 years ago

Comments for commit d0a233a:

There are at least two classes of units. Some are in the section [base_units], and some are in the section [units]. There must be two subclasses of OpenMdaoUnit: BaseUnit and DerivedUnit
- DataProperties should be changed to have Domain only apply to the correct class
BaseUnit must be an ObjectProperty, not a DataProperty.

Comment on Item 1: We must learn how Prefix elements are used in OpenMDAO, and decide if we need to support them.

adamnagel commented 10 years ago

Comments from today's discussion:

First, please finish item 4 above
Next, begin working on a function to deduce prefixed and combination units from the units defined in OpenMDAO. This could prevent us from needing a mapping table for all unit combinations.

adamnagel commented 10 years ago

Comments from today's discussion:

Items 1-4 are complete
Finish Items 5 & 6 for the MDAO domain
Modify getDependencies.sh to download the MDAO Unit INI file
- Available on GitHub here: https://github.com/OpenMDAO/OpenMDAO-Framework/blob/60494a933c0a68366f5e9094122e6deb6b1f95e2/openmdao.units/openmdao/units/unitLibdefault.ini
- Use a git command to download this single file from the repo

When these items are complete, we will close this issue.