New Member
Posts: 2
Registered: ‎09-22-2006
Message 1 of 6 (1,268 Views)

# Convert 2d polyline to polyline

1268 Views, 5 Replies
09-22-2006 02:47 PM
hello, i want to define an alignment from a 2D polyline, when i try to do it the following message appears: "Selected entity is not a polyline, please select a polyline"
what can i do to solve this problem?
would i be able to convert it into a polyline without losing the properties of the clotoids i have done so far?
*Robert Martin
Message 2 of 6 (1,268 Views)

# Re: Convert 2d polyline to polyline

09-22-2006 06:11 PM in reply to: chunior3000
Try defining by object.
Or turn it into a polyline with pedit

HTH

Robert

wrote in message news:5338799@discussion.autodesk.com...
hello, i want to define an alignment from a 2D polyline, when i try to do it
the following message appears: "Selected entity is not a polyline, please
select a polyline"
what can i do to solve this problem?
would i be able to convert it into a polyline without losing the properties
of the clotoids i have done so far?
*wfb
Message 3 of 6 (1,268 Views)

# Re: Convert 2d polyline to polyline

09-23-2006 04:59 AM in reply to: chunior3000
I think the answer lies somewhere in the his reference to "clotoids"
(clothoids). A clothoid spiral cannot be a polyline, I think.

Bill

"Robert Martin" wrote in message
news:5338895@discussion.autodesk.com...
Try defining by object.
Or turn it into a polyline with pedit

HTH

Robert

wrote in message news:5338799@discussion.autodesk.com...
hello, i want to define an alignment from a 2D polyline, when i try to do it
the following message appears: "Selected entity is not a polyline, please
select a polyline"
what can i do to solve this problem?
would i be able to convert it into a polyline without losing the properties
of the clotoids i have done so far?
New Member
Posts: 2
Registered: ‎09-22-2006
Message 4 of 6 (1,268 Views)

# Re: Convert 2d polyline to polyline

09-23-2006 07:07 AM in reply to: chunior3000
i can´t define de alignment with a polyline, now i am trying to define that by an object, but when i select the objects some clothoids are not used and the alignment is incomplete. What can i do??
*wfb
Message 5 of 6 (1,268 Views)

# Re: Convert 2d polyline to polyline

09-23-2006 09:09 AM in reply to: chunior3000
I rarely use LDD and even then it has been years since I had to construct a
spiral. You should be able to:

2. Select Create Spirals -> Select Spiral Type.

Go from there. If this doesn't work I cannot be much help.

Bill

wrote in message news:5339082@discussion.autodesk.com...
i can´t define de alignment with a polyline, now i am trying to define that
by an object, but when i select the objects some clothoids are not used and
the alignment is incomplete. What can i do??
*Don Reichle
Message 6 of 6 (1,268 Views)

# Re: Convert 2d polyline to polyline

09-23-2006 07:06 PM in reply to: chunior3000
chunior3000 have you yet looked into the Land Desktop Help for the
procedures involved with clothoid spirals? I've discovered that they are the
spiral type most often used in the United States, together with a seemingly
significant portion of the World.

There is Help to be found there for drawing the necessary Spiral, based on

I was able to find these two instructions along these lines, and they look
like they may be able to help you get this situation accomplished:

Drawing Two Spirals and an Intermediate Curve Between Two Tangents

Drawing Two Spirals Between Two Tangents Without an Intermediate Curve

Once I entered "clothoid spiral" into the Ask window on the Ask Me tab in
LDT Help - w/o quotes - then I saw "Drawing Spirals - procedure" near the
bottom on the Rank portion of the Ask Dialog Box of Help. On the left-hand
side, if that further helps you.

--
Don Reichle
"The only thing worse than training your staff, and having them leave is -
not training your staff, and having them stay." :-o
A reminder taken from Graphics Solution Providers' Calendar page
--------------------------------------------------------------------
!! They appreciate staying in the loop :-) !!

LDT-2K4
AMD Athlon 64 3200+ 2.2GHz
XPPro 32bit SP2
1GB RAM
Nvidia GeForce FX 5200 128MB
WD 36GB Raptor

"The only Constant is Change".

"wfb" wrote in message
news:5339070@discussion.autodesk.com...
I rarely use LDD and even then it has been years since I had to construct a
spiral. You should be able to:

2. Select Create Spirals -> Select Spiral Type.

Go from there. If this doesn't work I cannot be much help.

Bill

wrote in message news:5339082@discussion.autodesk.com...
i can´t define de alignment with a polyline, now i am trying to define that
by an object, but when i select the objects some clothoids are not used and
the alignment is incomplete. What can i do??

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