I'm looking into some software with parametric capabilities. Some, such as Ashlar-Vellum's Cobalt, say that they have associative parametric capabilities. Is a difference between "associative" relationships and true "parametric" relationships?
"associative" capabilities usually refer to parts that are dependant on each other - such as dimensions that change when you move the object they're dimensioning
or objects that you've set to stay parallel to each other so that when you rotate one object the other rotates by itself
or windows whose jamb thicknesses update by themselves when you change the thickness of the wall.
Parametric usually refers to the object's own parameters - so that you can repeatedly type in new heights, styles, etc. and the object updates itself.
There are a lot of architecture programs that use some of each of these capabilities - for instance VectorWorks and ArchiCAD.
Cobalt Vellum is designed more for smaller-scale objects and projects - it is in use widely in industrial, product, and furniture design. It is missing some features that you'd absolutely want in an architecture package - such as the ability to make libraries and use them from project to project (in Vellum the symbol library is specific to each file and can't be imported to a different project!) Most of the associative and parametric features found in Vellum are very similar to those found in VectorWorks.
Oct 13, 04 5:50 pm ·
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Parametric Modelling
I'm looking into some software with parametric capabilities. Some, such as Ashlar-Vellum's Cobalt, say that they have associative parametric capabilities. Is a difference between "associative" relationships and true "parametric" relationships?
be careful what you wish for.....per?
"associative" capabilities usually refer to parts that are dependant on each other - such as dimensions that change when you move the object they're dimensioning
or objects that you've set to stay parallel to each other so that when you rotate one object the other rotates by itself
or windows whose jamb thicknesses update by themselves when you change the thickness of the wall.
Parametric usually refers to the object's own parameters - so that you can repeatedly type in new heights, styles, etc. and the object updates itself.
There are a lot of architecture programs that use some of each of these capabilities - for instance VectorWorks and ArchiCAD.
Cobalt Vellum is designed more for smaller-scale objects and projects - it is in use widely in industrial, product, and furniture design. It is missing some features that you'd absolutely want in an architecture package - such as the ability to make libraries and use them from project to project (in Vellum the symbol library is specific to each file and can't be imported to a different project!) Most of the associative and parametric features found in Vellum are very similar to those found in VectorWorks.
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