Selection Sets in AutoCAD
AutoCAD prompts us to select an object after any editing command. The object selection method we used until now was taking the box on the entity and picking that entity. This requires more time and concentration. The topic discussed in this article will help you get through this issue with ease.
AutoCAD Select Objects command is very vastly used command in almost every industry where AutoCAD is used. A selection set is a predefined group of objects that can be selected by using accurate commands in sequence. Objects and entities can be added or removed from a specific selection if required. This is very useful and time-saving option in AutoCAD. You can save a selection set to easily and fastly select the specific entities in the drawing. There are many AutoLISP commands as well to utilize this option but in this article, we will discuss the native options and settings available in AutoCAD.
Following are the AutoCAD commands used to utilize the Selection sets in AutoCAD;
- When an editing command is given, a box appears which is known as a pick box. We take this on the entity to be selected and pick that entity.
Command : PICKBOX enter(System Variable)
The new value for pick box : ( give integer value from 0 to 32767)
This system variable is used to set the size of the pick box.
- In this method, a window is defined by picking the first corner and the diagonally opposite corner.
Only the entities which lie entirely inside the window box are selected while objects, which lie partially outside or entirely outside are neglected.
- The last drawn or constructed entity will be selected.
- In this method, a crossing is defined by picking the first corner and the diagonally opposite corner.
The entities lie partially or entirely inside the crossing box are selected.
- If the box is dragged to the left side, it is a crossing, and if it is pulled to the right side, it is a window.
- This method will select all the entities in the drawing file.
- In this method, we will have to drag a fence line through the entities. The entities that cross the fence line are selected.
- This method works on the same principle of WINDOW but now instead of a 4-sided polygon we can select the entities by defining a polygon of infinite sides. The objects that lie entirely inside the polygon are selected while the objects that lie partially inside are neglected.
- This works on the same principle of crossing, but now instead of a 4-sided polygon, we can select the entities by defining a polygon of infinite sides with the condition that the polygon sides should not intersect each other. The objects that lie partially or entirely inside the crossing polygon are selected.
- All objects pre-defined in a group command are selected.
- Selected items can be added to the selection set by using any of the object selection methods.
- Objects can be detached from the present selection set by using any of the object selection methods. To remove specific objects, hold down the shift key and select the objects.
- This helps us select multiple entities. It specifies various points without highlighting the objects. This speeds up the selection process for complex objects.
- Selects the most recent selection set in the drawing.
- This reverses the effect of the previous selection of an entity.
- This helps us select a single entity. The command ends after the selection of a separate entity.