USC orientation for paperspace plan profile

[TECHSERVICES]

I believe i have created the proper ucs in order for display in paperspace (plan profile sewer&water) dwgs.... but it is simply not rotating and displaying at that 180 degree flat angle... this is drafting 101, i'm in autocad 2017, but have not been a full time draftsperson for nearly a decade... please help.  🙂 

[hencoop]

I never set a UCS for that purpose.

I use DVIEW TWIST to set the plan view rotation in a floating viewport.

COMMAND: DVIEW <enter> "TWist" and then specify the angle within the viewport.

I have a tool that does it for me:  rotx.lsp

Search for rotx.lsp here to see the required subroutines and download them as well: Free Autolisp List

[Anonymous]

Once you've set the proper UCS enter the command PLAN then press enter twice, the view will "normalize" for that UCS in plan.

DVIEW TWIST is another option to change the view, but frequently it is MUCH easier to "show" AutoCAD a UCS based on points selected in the model than to attempt to glean sufficient information to determine the proper viewing angles for DVIEW.

[hencoop · Accepted solution]

It could be difficult to glean the angle.  It might not be if you draw a line between the origin and x-axis points you would pick to create your UCS and then copy its angle from the properties window.  You may need to delete the line afterwards.

DVIEW <enter> TWist <paste angle> <enter> will twist the view at the current zoom factor and around the current VIEWCTR.
Then, if you still want a UCS you can enter UCS View at the command line and the UCS will be set horrizontal to the current view without zooming extents.

The Plan <enter><enter> method after making the UCS will zoom extents as it sets the view to the UCS.

There are many ways to do most things in AutoCAD.  My way is not better than others.  It is just another way.  They each have advantages and disadvantages.

[TECHSERVICES]

when i go to plan (after setting ucs) it rotates accordingly in model space only... when i go thru the viewport in paperspace to rotate this happens...... see attached... it stretched it out... any help would be very appreciated.

also, i cannot hit enter twice in the plan command.   

thx.

dave.

[hencoop · Accepted solution]

It looks like you have your view set to something other than "Normal" (perpendicular) to the World UCS.

Plan views on Plan & Profile sheets should always be set normal to the WCS regardless of whether you will create a UCS or not.

It is expected that all of the existing survey and proposed design be drawn so the 2D items are co-planar or in a parallel plane to the WCS Plan or Normal View.

If your view is not Normal to the WCS you should start by making sure that the WCS is active and then set it to Plan View.

Command: UCS W makes the World UCS active.

Command: Plan <enter> sets the view normal to the WCS

 Alternatively you may use the DDVPOINT command:

It opens the Viewpoint presets dialog. Click on the "Set to Plan View" button to normalize your view.

After the WCS is set to plan view the dialog will look like this:

Using DVIEW TWist in a view that is not set to Plan View can cause your current problem.

Be sure to start with WCS set to Plan View before using DVIEW TWist.

[Anonymous]

---

@hencoop wrote:

It could be difficult to glean the angle.  It might not be if you draw a line between the origin and x-axis points you would pick to create your UCS and then copy its angle from the properties window.  You may need to delete the line afterwards.

---

The very same points you need to draw the line are the same points you need for the UCS.  Instead of drawing the line, just create the UCS from those same points.  The bonus being your angle won't be rounded off by the APREC.

[hencoop]

I think the objective was to make the line or the angle it describes horizontal in the view by setting the VIEWTWIST.  The purpose of the line was to determine what angle VIEWTWIST must be for the line to be horizontal in the view and then set the UCS to the view after the line is horizontal.  The lisp routine that I posted takes care of all of this and can use many existing objects that include an angle property (including text, line, or vertex).  I was trying to describe how setting the VIEWTWIST can be done manually before using the UCS command to match the UCS to the view.  Again, there are multiple ways of accomplishing things and the way I described is just one of them.

[Anonymous]

Well that IS a way ...

I was merely pointing out that if you have the information to draw the line, then you have the information to rotate the view in paperspace without viewtwist ... or the line