I need to turn alignments into polylines to bring into ArcGIS

[Anonymous]

I need to be able to turn alignments into polylines to provide them to my ArcGIS guy for a public display. I have done the XML export and then XML import into a blank drawing and exploded them. Is there a better way?
- Or can we create feature lines out of alignments that will pull into ArcGIS?
- Or is there a way to bring these alignments straight into without doing anything to them ArcGIS?

[Anonymous]

Correction. I meant to say:
- Or is there a way to bring these alignments straight into ArcGIS without doing anything to them.

[Anonymous]

Export Civil 3D objects to SDF format, then you can either import those
into a new dwg creating plines or use the bulk copy command in Map3D to
convert to shp format. Or an umber of other FDO converting tools to get to
an format that E$RI can read.

--

Murph
http://map3d.wordpress.com/


"lissaucad" wrote in message news:6333880@discussion.autodesk.com...
I need to be able to turn alignments into polylines to provide them to my
ArcGIS guy for a public display. I have done the XML export and then XML
import into a blank drawing and exploded them. Is there a better way?
- Or can we create feature lines out of alignments that will pull into
ArcGIS?
- Or is there a way to bring these alignments straight into without doing
anything to them ArcGIS?

[Anonymous]

Hi Murph,

I don't have a current version of ArcGIS. In the newest version, what
happens when you load a DWG with C3D alignments, feature lines, surfaces
displayed with contours, etc. into ArcMap? Is it able to display them?

Neil

[Anonymous]

Don't know either my last version of ArcMAP was 9.1 and no longer have it
installed. I might have to check on that but I don't think ESRI can see the
C3D objects esp. 2010 versions.

--
Murph
http://map3d.wordpress.com

___________________
"neilw" wrote in message
news:6334624@discussion.autodesk.com...
Hi Murph,

I don't have a current version of ArcGIS. In the newest version, what
happens when you load a DWG with C3D alignments, feature lines, surfaces
displayed with contours, etc. into ArcMap? Is it able to display them?

Neil

[Anonymous]

Hi lissaucad,

You could use the Offset command on the alignments with an offset of
zero. This will create polylines which should go into ArcGIS and leave
you with the full functionality of your alignments in Civil 3D.


Regards,


Laurie Comerford

lissaucad wrote:
> Correction. I meant to say:
> - Or is there a way to bring these alignments straight into ArcGIS without doing anything to them.
>

[Anonymous]

Excellent suggestion Laurie. One caveat, the offset command will not allow a
value of zero, so you'd have to give it a value and then offset the result
back again.

[Anonymous]

Hi Neil,



Good point.  But with an offset of 0.00001 it shouldn't be far enough
away to bother setting it back.



As an aside try an offset of:10^^-several
        🙂



If the alignment includes a spiral, the errors in transforming the
spiral to a polyline will be far greater than that.





Regards,





Laurie Comerford



neilw wrote:

Excellent suggestion Laurie. One caveat, the offset command will not allow a 

value of zero, so you'd have to give it a value and then offset the result 

back again.

  

[Anonymous]

Laurie wrote:

> You could use the Offset command on the alignments with an offset of
> zero. This will create polylines which should go into ArcGIS and
> leave you with the full functionality of your alignments in Civil 3D.

Good one, here's a little lisp to implement it.

(defun C:ALI2PLN ()
(if (/= (setq obj (entsel "\nSelect Alignment: ")) nil)
(command "_.OFFSET" 0.0000000000000001 obj '(0 0) "")
)
)

Terry
--
Never start any job without the right tools!
AutoCAD Add-on Tools at http://www.dotsoft.com

[Anonymous]

Hi Terry,



I was joking when I said several.  It seems you took it literally.
There are too many zeros to count.
:-)





Regards,





Laurie Comerford



Terry W. Dotson wrote:

Laurie wrote:



  

You could use the Offset command on the alignments with an offset of 

zero.  This will create polylines which should go into ArcGIS and

leave you with the full functionality of your alignments in Civil 3D.

    

Good one, here's a little lisp to implement it.



(defun C:ALI2PLN ()

   (if (/= (setq obj (entsel "\nSelect Alignment: ")) nil)

     (command "_.OFFSET" 0.0000000000000001 obj '(0 0) "")

   )

)



Terry

  

[Anonymous]

Thanks for your replies everyone. I like the offset command and sdf options. Perhaps a good wish list item would be a way to dynamically link offset and cl alignments straight into GIS.

[GlennPope]

You can use eTransmit and have it explode AEC objects. This will create a new file with the alignment exploded allowing you to bring into ArcGIS, while leaving the original drawing alone.