User Coordinate System

[malvern]

Hie guys l jst wanted to ask if it useful to get deep into Coordinate System when u want to be based in Mechanical Designing/Drafting am using AutoCAD pliz help

[RobDraw]

It can be useful knowledge in any field. If you plan on doing 3D, it is a necessity.

[Dadgad]

It is now about how deep you get into it, there really isn't that much to learn, but what there is, is definitely important.

Read a tutorial or two, and you should know just about everything you would ever need to know.

Making use of what you learn is more of an art, than understanding the fundamentals.

 

I assume you are talking about UCS (for User Coordinate System), maybe I read you wrong.

[malvern]

yah both UCS n WCS

[RobDraw]

Making use of what you learn is more of an art, than understanding the fundamentals.

 

+ 1 to this.

[Dadgad]

yah both UCS n WCS

 

http://www.cadtutor.net/tutorials/autocad/using-coordinates.php

 

 

WCS is drop dead simple.

The Z axis starts at ground level, for instance, and positive values go UP, negative Z values go down along that axis,

just like on a number line. In construction elevations, the Z value would represent how far you are up the building, or from sea leavel,

or from a defined Z axis reference point, which would be noted on the drawing.

If you are in PLAN view, the positive Z axis extends upward from your screen, perpendicular to the ORIGIN, which is where the X and Y axis converge, at 0 (X axis value), 0 (Y axis value). Cartesian coordinates are defined in this order (X,Y,Z). When defining a coordinate in a 3D environment, there will always need to be that THIRD value added, without which the information would be incomplete. If coordinates are 2D, there will be only two values, the X axis value is always first, and the Y value is always second, like (X,Y)

 

UCS is a customized coordinate system, think Frame of Reference, which the USER specifies and defines, in order to facilitate the task at hand.

In UCS, you tell the software to reorient the axis to suit your immediate drawing or display needs.

It is not defined by THE WORLD, but by the USER.

 

http://www.cadtutor.net/tutorials/autocad/getting-ready-for-3d/

http://www.cadtutor.net/tutorials/autocad/learning-autocad-3d.php

Edited April 7, 2015 by Dadgad