Contrast this with a range, which, used at different times in a model, might return different objects with location falling in a specific range, for instance. The objects are 'members' of the group and will persist so until a subsequent command either removes them from the group, removes the group itself, or assigns them to a different group in the specified slot. parts of the model in stage1, the first, second, etc. This gives the user a way to remove the first, second, etc. Within stage1 of excavation there could be objects belonging to groups first, second, etc. corresponding to each stage of the excavation.

Using the group logic, one can imagine creating group slots named stage1, stage2, etc. To shift to a geomechanical context, one might wish to undertake a staged excavation sequence where each step consists of removing parts of the model successively. In fact, in a model, any number of group names may be specified, and up to 128 different slot names may be used. Chair also belongs to group to_sit_on in slot purpose, meaning the purpose of the chair is to sit on. For instance, the chair belongs to group floor in slot resting_location, meaning its resting location is on the floor. The group name, on the other hand, is the value the attribute takes for the object. One can think of a group slot as being a meaningful name corresponding to the attribute in question (i.e., resting_location or purpose in the example above). The group logic is the tool used in FLAC3D to categorize model objects. For instance, we may wish to query the set of household objects to find the things whose resting location is floor (i.e., chair and rug). Each object can be described by a number of attributes and, by undertaking such categorization, it is possible to ask questions about the set. One might wish to categorize these things by their resting location ( floor, floor and wall, respectively) or by their their purpose ( to sit on, to stand on and to look at, respectively). Imagine that you have three household things consisting of a chair, a rug, and a painting. A group is a label applied to an object as means of categorization.

Groups vs range flac3d