To determine if a previously defined system is a regular or general system, access the Coordinate/Grid Systems form and highlight the system name in the Systems display area. The Define Grid Data form can be used to define a regular system. A general system is a system comprised of arbitrarily defined grid lines. An unlimited number of coordinate/grid systems can be defined, each with a unique name.Ī regular system is any coordinate/grid system having a Cartesian (rectangular) or cylindrical grid system. Each grid system is defined with respect to its own coordinate system, so, as indicated previously, grid and coordinate systems are defined together as a single entity. Grid systems may be Cartesian (rectangular), cylindrical, or general. However, when only a coordinate system is needed, such as when viewing the model, defining the model (object local axes, loads, and the like), and reporting results, a coordinate/grid system can be defined with no grid lines.Ī grid system is a set of intersecting lines used to aid in drawing the model. Thus, coordinate systems are always defined as part of a coordinate/grid system pair. They are used to define the location and orientation of the associated grid system. Use the Coordinate/Grid Systems form to (a) access other forms that can be used to add a new coordinate system and uniform grid, (b) convert a previously defined uniform (regular) grid system to a general (non-uniform) grid system, or (c) delete a previously defined coordinate/grid system.Ĭoordinate systems are defined by specifying their origins and orientations with respect to the fixed Global coordinate system. Alternatively, right click in a blank area of a display window showing an undeformed shape and select the Edit Grid Data command from the resulting pop-up menu to access the form. Use the Define menu > Coordinate System/Grids command to access the Coordinate/Grid Systems form. For more like this, use the search bar to look for some or all of these keywords: graph, paper, coordinate, grid, Cartesian.Define Coordinate Systems Grid Define Coordinate Systems/Grids If there are more versions of this worksheet, the other versions will be available below the preview images. Preview images of the first and second (if there is one) pages are shown.
#Coordinate grids pdf#
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