Direct And Absolute Input In Autocad 2017 4l391w

Direct and Absolute Input in AutoCAD 2017 Group : Feezal Dhanny  Ajay Gowkarran  Nicholas Gouevia  Tatya-Na Ramdyhan  Leona McIntyre 

DIRECT AND ABSOLUTE INPUT IN AUTOCAD 2017

Introduction In AutoCAD, the default origin is located at the lower left corner of the graphics area of the screen. AutoCAD uses the following coordinates systems to locate a point in an XY plane: o Absolute Coordinate System o Direct Distance Entry o Relative Coordinate System

In the absolute coordinate system the points are located with respect to the origin (0,0). The Direct Distance Entry you can draw a line by specifying the length of the line and its direction by the use of this command. The direction is determined by the position of the cursor, and the length of the line that is entered from the keyboard. You can use Direct Distance Entry with Polar Tracking (restricts cursor movement to specified angles) and Polar Snapping (restricts cursor movement to specified increments along a polar angle).

Direct Distance entry technique Specify a second point by first moving the cursor to indicate direction and then entering a distance.

Entering Coordinates with Direct Distance Entry A simplified method of entering coordinates when the distance and direction from the last point are known is called Direct Distance Entry. In a nutshell, Direct Distance Entry eliminates the need for most keyboard entry of coordinates. Direct Distance Entry can be used anytime a command prompts for a point.

To draw the figure above using Direct Distance Entry, first turn on ORTHO (F8) or POLAR (F10). Next, begin the LINE command and left-click a point in the drawing area. Move your pointer to the right, type 6.5 and press ENTER. Move your pointer straight up, type 2.5 and press ENTER. Move your pointer to the right, type 3.0 and press ENTER. Continue to move your pointer in the direction of the line to be drawn, type in the length of the line and press ENTER.

Direct Distance Entry can be used in many commands, including Move, Copy and Stretch. Nonorthogonal directions can be indicated by setting the increment angle in Polar Tracking.

How to do use the direct entry technique

Absolute coordinates ( Format :X, Y) Type the X and Y coordinates to locate the point on the current coordinate system relative to the origin.

Absolute and Relative Coordinates AutoCAD 2017 also allows us to use absolute and relative coordinates to quickly construct objects. Absolute coordinate values are measured from the current coordinate system's origin point. Relative coordinate values are specified in relation to previous coordinates. AutoCAD 2016 also allows us to use absolute and relative coordinates to quickly construct objects. Absolute coordinate values are measured from the current coordinate system's origin point. Relative coordinate values are specified in relation to previous coordinates.

The coordinate display area can also be used as a toggle switch; each left mouse-click will toggle the coordinate display on or off. In AutoCAD 2017, the absolute coordinates and the relative coordinates can be used in conjunction with the Cartesian and polar coordinate systems. By default, AutoCAD expects us to enter values in absolute Cartesian coordinates, distances measured from the current coordinate system's origin point. We can switch to using the relative coordinates by using the @ symbol. The @ symbol is used as the relative coordinates specified, which means that we can specify the position of a point in relation to the previous point.

How to do use the absolute coordinate technique

Conclusion From this presentation we can conclude that the absolute coordinates system are based on the UCS origin (0,0), which is the intersection of the X and Y axes to locate this command, click the location that you want to identify the X,Y,Z coordinate values that are displayed at the Command prompt, With object snaps turned on, you can select an object and see the coordinates for a feature such as an endpoint, midpoint, or center. While, with direct distance entry, you can quickly specify a point relative to the last point you entered. At any given point, you move the cursor first to specify the direction, and then enter a numeric distance on the specified drawing.

References 

CAD Inc - CCAD's AutoCAD Tutorials http://www.ccadinc.com/autocad-tutorialsdde.html Cited : 2017/ 11 /26

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AutoCAD 2017 Tutorials – Beginners Tutorial http://www.sdublications.com/pdfsample/978 -1-58503-959-3-1.pdf Cited : 2017/ 11 /26

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Youtube - Lines using direct distance https://www.youtube.com/watch?v=eniWa6fGp N0 Cited : 2017/ 11 /26