AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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*David Dixon
Message 1 of 9 (234 Views)

Bearing labels

234 Views, 8 Replies
11-13-2006 03:45 PM
How do I get my bearing labels to work with drawing transformation to
label my lines correctly? I have a drawing where north is not straight
up; north is almost rotated 270 degrees downward. Local and grid
coordinates are set in 'Transformation' tab Drawing settings. Bearing
labels still label with the world UCS.

--

David Dixon
Clark Nexsen, Architecture & Engineering
Civil 3D 2007 SP2
Dell Optiplex GX620
XP Pro SP2, Intel P4 3.4 Ghz, 2 GB RAM
256 ATI Radeon X600 Dual Display
http://dca2civil3d.blogspot.com
*Dana Breig Probert
Message 2 of 9 (234 Views)

Re: Bearing labels

11-13-2006 04:27 PM in reply to: *David Dixon
oh dear....
http://www.civil3d.com/index.php/2006/09/more-on-ucs-vs-dview-in-civil-3d/

an excerpt....

Autodesk Civil 3D object data is always presented in AutoCAD World
Coordinate System coordinates.

For example, the alignment data in the Alignment Entities vista in the
Panorama window is listed in world coordinates.

In addition, the Autodesk Civil 3D transparent commands are based on the
AutoCAD World Coordinate System. However, when you create an object and have
an AutoCAD User Coordinate System (UCS) defined, the UCS is honored when you
specify locations, which means that an insertion point or a coordinate is
interpreted relative to the UCS.

Autodesk Civil 3D objects are not aligned with the UCS.

For example, labels can be oriented relative either to the current view, the
World Coordinate System, or the labeled object, depending on the Orientation
Reference setting, but they cannot be oriented to the UCS.

Similarly, objects, such as profiles, sections, and tables, cannot be
oriented to the current UCS.

For more information about AutoCAD World Coordinate Systems and AutoCAD User
Coordinate Systems, see AutoCAD Help.
---------

And I tried it. I labeled bearings, etc. on some parcels and alignments,
then I changed the UCS and the labels nor the mapchecks changed.

I also did another experiment. I imported a list of points. Then I changed
my UCS so that my Y axis was 45 degrees turned. I reimported the same list
of points from ascii. They came in at the exact same spot. So it is truly
using the World Coordinate System when dealing with Civil 3D objects.

In some respects, I think I would rather it react to the UCS. I think that
an appropriate use of the UCS would be a North rotation.

However, that takes my original fears off the table. UCS changes won't muck
with the Civil 3D data.


--
Dana Breig Probert, E.I.T.
Engineered Efficiency, Inc.
www.civil3d.com
www.eng-eff.com
----------------------------------
Civil 3D 2007 SP3
AMD Athlon 64 X2 Dual Core 2.01 GHz
2GB RAM, 256 MB ATI FireGL V5200

Intel Core 2 2.33GHz
2 GB RAM, 512 MB NVIDIA Quadro
-------------------------------------------
*David Dixon
Message 3 of 9 (234 Views)

Re: Bearing labels

11-13-2006 07:05 PM in reply to: *David Dixon
Thanks Dana.

Yep, but I'm not really looking to rotate my UCS or my drawing entities.
In Land Desktop, we used to be able to define a local coordinate system,
relate it to a geodetic datum, then have the bearing labels react to that,
independent from the world UCS. I can do everything but have the labels
react to the Transformation settings in Civil 3D. I guess I could try to
redefine my "UNITS" so that the East orientation is different. Short of
that, I will have to label my bearings manually.

I have an assumed benchmark coordinate of X=10000,Y=10000 which then
relates to WGS84-UTM coordinate, which then relates to Latitude -
Longitude. My second benchmark defines the north orientation (rotated
about 250 degrees to the world UCS). In order for the contractor to
stakeout the site, we will need to maintain the local coordinate system he
has already set, plus we will need to tell him Latitude - Longitude too.
They need Lat - Long as well; this project is in the middle of nowhere
with no permanent control points close by. We can do all of this in Civil
3D except label the bearing as a Civil 3D object. The bearing, as you
explain, relates to world UCS, and is therefore incorrect.
*Dana Breig Probert
Message 4 of 9 (234 Views)

Re: Bearing labels

11-13-2006 08:35 PM in reply to: *David Dixon
right. i dont remember the exact mechanics of the north rotation in land
desktop, but i am fairly sure it made a ucs (world is always world) and that
is why your labels reacted.

there is no, that i am aware of, north rotation in civil 3d (at press time)

jason? nick?

--
Dana Breig Probert, E.I.T.
Engineered Efficiency, Inc.
www.civil3d.com
www.eng-eff.com
----------------------------------
Civil 3D 2007 SP3
AMD Athlon 64 X2 Dual Core 2.01 GHz
2GB RAM, 256 MB ATI FireGL V5200

Intel Core 2 2.33GHz
2 GB RAM, 512 MB NVIDIA Quadro
-------------------------------------------
*Jason Hickey
Message 5 of 9 (234 Views)

Re: Bearing labels

11-14-2006 04:37 AM in reply to: *David Dixon
Dana Breig Probert wrote:
> right. i dont remember the exact mechanics of the north rotation in land
> desktop, but i am fairly sure it made a ucs (world is always world) and that
> is why your labels reacted.

I guess I never thought about the "how", but that makes sense.

> there is no, that i am aware of, north rotation in civil 3d (at press time)
>
> jason? nick?

There is no north rotation in C3D, and from what I've heard, never will
be. I've not had a chance to look into labels reacting to
transformation settings...is there any reason at all why the drawing
can't be rotated so that north really *is* up? That way, labels react
correctly and any view preferences could be controlled in the layout
using either a UCS rotation (for that view only) or a DVIEW twist (see
how diplomatic that answer was? I suggested BOTH ways!)


--
Jason Hickey

Civil 3D 2007, SP2
Dell Precision M70
2 GIG RAM, 256 MB nVidia Quadro FX Go1400
Intel Centrino 2 gHz Processor

www.civil3d.com
*TomD
Message 6 of 9 (234 Views)

Re: Bearing labels

11-14-2006 07:41 AM in reply to: *David Dixon
Why not use XRefs? Attach the 'base' info and do the parcel work in that,
based on a rotated XRef?

"David Dixon" wrote in message
news:5394891@discussion.autodesk.com...

I have an assumed benchmark coordinate of X=10000,Y=10000 which then
relates to WGS84-UTM coordinate, which then relates to Latitude -
Longitude. My second benchmark defines the north orientation (rotated
about 250 degrees to the world UCS). In order for the contractor to
stakeout the site, we will need to maintain the local coordinate system he
has already set, plus we will need to tell him Latitude - Longitude too.
They need Lat - Long as well; this project is in the middle of nowhere
with no permanent control points close by. We can do all of this in Civil
3D except label the bearing as a Civil 3D object. The bearing, as you
explain, relates to world UCS, and is therefore incorrect.
*David Dixon
Message 7 of 9 (234 Views)

Re: Bearing labels

11-14-2006 07:50 AM in reply to: *David Dixon
I thought I might be able to create a new bearing label and make an
expression to add the angle of difference to the "General Segment
Direction" but I can't seem to get that to work for me. The expression
calculates an azimuth angle okay but not a bearing angle in surveyors
units. Changing the direction of East in AutoCAD units did not work
either. I might be stuck on this one.

Thanks for your help Civil3D.com team.

Dave :-)

On Tue, 14 Nov 2006 07:37:04 -0500, Jason Hickey
wrote:

> Dana Breig Probert wrote:
>> right. i dont remember the exact mechanics of the north rotation in
>> land
>> desktop, but i am fairly sure it made a ucs (world is always world) and
>> that
>> is why your labels reacted.
>
> I guess I never thought about the "how", but that makes sense.
>
>> there is no, that i am aware of, north rotation in civil 3d (at press
>> time)
>>
>> jason? nick?
>
> There is no north rotation in C3D, and from what I've heard, never will
> be. I've not had a chance to look into labels reacting to
> transformation settings...is there any reason at all why the drawing
> can't be rotated so that north really *is* up? That way, labels react
> correctly and any view preferences could be controlled in the layout
> using either a UCS rotation (for that view only) or a DVIEW twist (see
> how diplomatic that answer was? I suggested BOTH ways!)
>
>



--

David Dixon
Clark Nexsen, Architecture & Engineering
Civil 3D 2007 SP3
Dell Optiplex GX620
XP Pro SP2, Intel P4 3.4 Ghz, 2 GB RAM
256 ATI Radeon X600 Dual Display
http://dca2civil3d.blogspot.com
*Peter Funk - Autodesk, Inc
Message 8 of 9 (234 Views)

Re: Bearing labels

11-18-2006 04:50 PM in reply to: *David Dixon
Dave,

Are you returning the value of the express as a "Direction" or as a
"Double"? If you return it as a "Direction" then it should format as a
bearing.

Regards,

Peter Funk
Autodesk, Inc.
*Dana Breig Probert
Message 9 of 9 (234 Views)

Re: Bearing labels

11-19-2006 07:07 PM in reply to: *David Dixon
hmmmm

will this help me in my quest for a leading zero hack, Peter?

--
Dana Breig Probert, E.I.T.
Engineered Efficiency, Inc.
www.civil3d.com
www.eng-eff.com
----------------------------------
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