Skip to main content
Question

Why some attribute is Hidden

abdullah83
Contributor
Forum|alt.badge.img+5

Hi, I am a master scholar conducting a study on BIM and GIS. I am also new to using FME and don't have a background in computer science. My question is, what is the difference between the attributes in a table and the hidden attributes in properties? Why are they hidden, and why is it necessary to expose them using the Transform Attribute Exposer (not Automatic Exposer)? Additionally, what are trails? I'm somewhat confused about understanding these terms.

Another question regarding geometry, from my readings, geometry can be created through BREP, Extruded, and Sweep methods. How is this determined in FME, as I only see IFMEMesh, IFMEFace, and so on?

2 replies

redgeographics
Celebrity
Forum|alt.badge.img+49

Some attributes are hidden because they're either used internally by FME (everything starting with fme_ for example) or the specific format. Generally those are things that are not of immediate use to the end-user or should be mapped to format-specific output attributes. FME hides those so as to not overwhelm you but you can use an AttributeExposer (or exposing them on the reader feature type) to show them.

takashi
Influencer
  • takashiInfluencer
  • November 24, 2023

Hi @abdullah83​ ,

About traits.

A feature has attributes and a geometry, and a geometry can have properties - Geometry Name and Trait(s). Sometimes a geometry consists of one or more geometry part(s) with hierarchical structure, each or which is also a geometry and can have properties individually as well.

Traits are something like attributes, but they are linked to a geometry, not directly linked to a feature.

See here to learn more about geometry concepts in FME.

https://docs.safe.com/fme/html/FME-Form-Documentation/FME-Form/!FME_Geometry/General_Concepts.htm

Reply


Helpful Members This Week

Community Stats

31,333
Posts
118,864
Replies
38,957
Members

Latest FME

Terms & ConditionsCookie settings

Cookie policy

We use cookies to enhance and personalize your experience. If you accept you agree to our full cookie policy. Learn more about our cookies.

 
Cookie settings
A product of
Safe Software respectfully acknowledges that we live, learn and work on the traditional and unceded territories of the Kwantlen, Katzie, and Semiahmoo First Nations.