1. Difference Between Ucs And Wcs
2. What Is Ucs In Autocad

Could somebody explain to me the differences between the UCS and WCS please.? User Coordinate System (UCS) World Coordinate System (WCS) Typically, when I translate a point it is because my current view (._plan command) has been rotated about the vicinity of my project I am working. As I work in Civil, specifically transportation, I frequently rotate my view to orient my drawings accordingly. That said, the translation is needed because my UCS has also been rotated to suite my current view, i.e., UCS Origin = (10 4 0.0000), and WCS Origin = (0 0 0) So what 's the benefit or the needs of transforming of them? A benefit if having the ability to translate a coordinate into another coordinate system.

That exactly was what I am looking for to know. * The second routine is performing as well as we expect while intending to insert points.:D * The first routine is taking my inserted points a way from me.:lol:. So the inserted points would transform the points to the angular degree of the current UCS without taking the consideration of points' insertion clicks. Am I right?:unsure: *** LEE with your two routines I got it very well *** Thank you soooooo much.

Virtually all coordinate entry as well as many other tools and operations reference the current UCS. 2D tools and operations that depend on the location and orientation of the UCS include the following: • Absolute and relative coordinate entry • Absolute reference angles • Definition of horizontal and vertical for Ortho mode, polar tracking, object snap tracking, grid display, and grid snap • Orientation of horizontal and vertical dimensions • Orientation of text objects • View rotation using the PLAN command Moving or rotating the UCS can make it easier to work on particular areas of a drawing. You can relocate the user coordinate system with methods such as the following: • Move the UCS by defining a new origin point. • Align the UCS with an existing object. • Rotate the UCS by specifying a new origin point and a point on the new X axis.

Objective: Explain the relationship of the WCS icon (World Coordinate System) to the AutoCAD coordinate system. Explain the difference between the WCS and the UCS (User Coordinate System). AutoCAD 2016 Tutorial: User Coordinate System - myCADsite.com. Home; Tutorials. (WCS) and taping it onto the wall (UCS). The WCS is the World Co-ordinate System.

Setting up your survey points should be very easy then, as you can set those up by simply placing them on the x and y axis. Depending on how precise your survey points are, you might want to set your units to mm, despite the UTM system being in meters.

Greatly appreciated. So the inserted points would transform the points to the angular degree of the current UCS without taking the consideration of points' insertion clicks. Not quite - The selected points have coordinates relative to the UCS (User Coordinate System), whereas, the endpoints of the line entity must be defined in WCS (or perhaps OCS for other entities such as LWPolyline). Hence we must transform the UCS points to be relative to the WCS. This can be done either by use of a relevant transformation matrix if we know the UCS rotation, normal and displacement - or via the trans function.

Hence the TOP UCS is set by using the UCS command and is relative HTH.

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This example shows how you would rotate the UCS -90 around the positive X axis. Command: UCS Origin/ZAxis/3point/OBject/View/X/Y/Z/Prev/Restore/ Save/Del/?/: X Rotation angle about X axis: -90 PREVIOUS: This option returns you to the last setting you had for the UCS. You'll use this one a lot in 3D. Altium designer 10 free download full. You might need to change your UCS to draw one object, then go back to what you had it set at before.

Viewport Expressed in world coordinates Once AutoCAD has established the OCS for a given entity, the OCS works as follows: The elevation value stored with an entity indicates how far to shift the XY plane along the Z axis (from the WCS origin) to make it coincide with the plane that contains the entity. How much of this is the user-defined elevation is unimportant. Any 2D points entered through the UCS are transformed into the corresponding 2D points in the OCS, which is shifted and rotated with respect to the UCS. These are a few ramifications of this process: • You cannot reliably find out what UCS was in effect when an entity was acquired. • When you enter the XY coordinates of an entity in a given UCS and then do a SAVEAS, you probably won't recognize those XY coordinates in the DXF file.

Command: UCS Current ucs name: *NO NAME* Enter an option [New/Move/orthoGraphic/Prev/Restore/Save/Del/Apply/?/World]: 3 Specify new origin point: Specify point on positive portion of X-axis: Specify point on positive-Y portion of the UCS XY plane: This is the ‘3-Point' option of the UCS Command. It is one of the most useful, because you control exactly where the new drawing plane will be. You must also be extremely careful when picking the 3 points, or your plane can be shifted and cause some major problems. I would recommend using this method for most of your UCS work - or at least get very comfortable with it before moving on to other methods.

This gets tricky, as you have to be aware how your positive X and Y axes end up. You also need to know how the object was drawn originally as this defines its plane. Command: UCS Origin/ZAxis/3point/OBject/View/X/Y/Z/Prev/Restore/ Save/Del/?/: OB Select object to align UCS: VIEW: By choosing the view option, AutoCAD will automatically reset the UCS to be aligned with your current view, keeping the origin where it was previously located. Command: UCS Origin/ZAxis/3point/OBject/View/X/Y/Z/Prev/Restore/ Save/Del/?/: V X / Y / Z: By selecting either the X, Y or Z options, you need to first pick a point along the axis you have chosen, then provide a rotation angle based on the right hand rule mentioned earlier.

Thank you for the information about the UCS. I am often changing the UCS to align tooling to 3D parts that we produce.

So what method should be used? Unfortunately, they are all fairly complicated. Users should have a high degree of proficiency in AutoCAD before using any of these methods. Each method has its advantages and disadvantages and they are discussed next. Softdesk North Rotation Advantages a) For proper Softdesk Cogo labeling orientation and accuracy, this is the best method. Disadvantages a) Setting a north rotation other than the Y direction can be very dangerous if you forget that it’s set or another user does not know it’s set.

Here are examples of these options: Command: UCS Origin/ZAxis/3point/OBject/View/X/Y/Z/Prev/Restore/ Save/Del/?/: S (Save a UCS Setting)?/Desired UCS name: VIEW1 Command: UCS Origin/ZAxis/3point/OBject/View/X/Y/Z/Prev/Restore/ Save/Del/?/: R (Restore a UCS setting)?/Name of UCS to restore: VIEW1 Command: UCS Origin/ZAxis/3point/OBject/View/X/Y/Z/Prev/Restore/ Save/Del/?/:? (List your UCS settings) UCS name(s) to list: Current UCS: VIEW1 Saved coordinate systems: VIEW1 Origin =, X Axis = Y Axis =, Z Axis = Origin/ZAxis/3point/OBject/View/X/Y/Z/Prev/Restore/ Save/Del/?/: D UCS name(s) to delete: VIEW1 Deleted 1 UCS name. This was a series where a view named VIEW1 was saved, restored, listed, and then deleted. DYNAMIC UCS Another option to try is using Dynamic UCS, but I don't recommend this technique for new users.

Command: UCS Origin/ZAxis/3point/OBject/View/X/Y/Z/Prev/Restore/ Save/Del/?/: P Restore/Save/Del/?/: The next options are used in conjunction with each other. You have the option of saving a particular UCS with a name. You can then restore that named UCS or delete if you no longer will be using it.

2D entities such as circle, arc, solid, trace, text, attrib, attdef, shape, insert, 2D polyline, 2D vertex, lwpolyline, hatch, image These entities are planar in nature. All points are expressed in object coordinates. All of these entities can be extruded. Their extrusion direction can differ from the world Z axis. Dimension Some of a dimension's points are expressed in WCS and some in OCS.

It is only useful for one orientation. D) The same North Rotation has to be set individually for every plan drawing in the project. Dview Twist Advantages a) The accuracy and consistency of Softdesk data will not be effected. The entire world is being rotated, so the relationship between the drawing information and the coordinate system does not change. B) Different dview twists can be set in different viewports and drawings.

Difference Between Ucs And Wcs

You can even change the UCS angle if that is required. You can name them and save them, so you can switch between them. In Paperspace you need to keep in mind that the UCS only has a (0,0) point: An ‘X’ and a ‘Y’ coordinate. When moving the UCS origin (see pictures below) you can see the square in the crosshairs is gone, meaning you use the User Coordinate System. Instead of seeing WCS underneath your compass you now see ‘Unnamed’, meaning your active UCS is still unnamed. To save your newly determined UCS do the following: • Click View tab>UCS panel>Named UCS.

All Softdesk defined alignments, dtm’s, pipes, etc. Are based on the changed north rotation. Inconsistent data can therefore be created between users with different north rotations. B) Equating initial survey information to post-design stakeout can sometimes be difficult. C) If the user needs different orientations in different sheets or viewports, north rotation cannot help.

What Is Ucs In Autocad

Hope that helps! *** THANKS RENDERMAN *** I have a small question please. I rotate the ucs ( X 180 degrees ) and inserted a text with these informations, and it is inserted normally; (command '_.text' (trans '(0 0 0) 0 1) ' ' 'this is a text') And I inserted another text as following, and it is also normal.

It does not shift the drawing plane at all as you only pick one point. ORIGIN: Command: UCS Origin/ZAxis/3point/OBject/View/X/Y/Z/ Prev/Restore/Save/Del/?/: O Origin point: Z-AXIS: This choice allows you to pick two points to define the direction of the Z-axis. First you pick the new origin, then you pick a point for the positive Z-Axis. Command: UCS Origin/ZAxis/3point/OBject/View/X/Y/Z/ Prev/Restore/Save/Del/?/: ZA Origin point: Point on positive portion of Z-axis: OBJECT: Using this method, you have to pick on a 2D object that is lying on a particular drawing plane.

I am sorry, I could not understand the use of TRANS function.:( Any small hint once again please. You're welcome.:) So if I understand you correctly. You have a drawing (right-side up) You rotate the UCS 180 degrees (upside down) Place some text (also upside down) Then rotate the drawing back 180 degrees (making the drawing right-side up again).and now your text is upside down.?:? Seemingly simple solution, don't rotate your UCS before making the text.:wink: As for the trans function, let's try this example. If you wanted to insert some text at the start point of a line, and used vlax-curve-getstartpoint to get the coordinates for that point, but your UCS was rotated 90 degrees, and it's origin was displaced from the WCS origin, then inserting text at the coordinates returned from the vlax-curve-getstartpoint function (in WCS) would result in a text object off in space somewhere.