What is the purpose of the arrow? You are probably better off staying with Leaders and Dimensions.
Mike Kingdon
Civil 3D Zealot
I agree that a Leader is the way to go, and you can define a separate Dimension Style to use for these, if you want them to be different from your other Leaders and Dimensions.
A linetype won't work because it will need to have a definition cycle with a certain length, and any Line/Polyline/etc. longer than that length will have more than one arrowhead, and even if the length allows only one, except when the length is exactly right, the arrowhead will not be at the end, but there will be some line portion beyond the tip of the arrowhead.
But you may find this usable -- not a linetype but an add-an-arrowhead routine.
Kent Cooper, AIA 
hi eventubbergh,
I'm afraid you're right 
. if you use the Autocad P&ID you haven't problem, but with AutoCad "naked" is not possible.
Let me know if in the future you'll find some solutions. I'll do the same.
have a grat day!
@Anonymous wrote:
.... we want line endings like just about every other piece of software that I have even used that can draw lines. It's crazy that we can't!
Thanks for thre link, I can't open it though. I will try again later. I still think that a general style for a layer for line endings would really work. If I need to individually select every line to change it every time I import the lines I will be here for days each time.
....
I haven't used other software that does line endings in that way. [That is, other than the optional shapes of the ends of things with pen width in Plotting -- rounded, squared, etc. -- but those don't include anything like arrowheads.] But what you describe as a Layer setting sounds like it would do the same to both ends of all Lines [and may I presume also Arcs, open Polylines, etc.?]. That certainly is not in accord with your image. Even if such a thing could be made to put a special end on only one end of each object, that might be workable as you're drawing them with a Layer like that current [e.g. if it uses them at only the beginning of each Line -- that's essentially what a Leader does]. But if you're importing something made up of ordinary Lines that you would want to put on such a Layer, you wouldn't have control over in which direction they were drawn. Wouldn't you still need to go through and check each one for whether the arrowhead is on the end you want, and reverse a lot of them?
[The Cadalyst website generally, not just that linked sub-page, seems to be having a problem at the moment. So do try again, but even if it's somewhat viable for you, it's still going to require going around and picking ends of things you want arrowheads added to.]
Kent Cooper, AIA
This is very rudimentary but it can be done through a simple lisp routine. It could be done much nicer but this is about the extent of my knowledge of lisp.
(defun C:PLR (/) ;draw Pline Left to Right with arrow at the right (command "pline" pause "w" "0" "0" pause "w" "0" "0.075" "@0.125<180" "w" "0" "0" "" "")) (defun C:PLD (/) ;draw PLine Down with arrow at second pick (command "pline" pause "w" "0" "0" pause "w" "0" "0.075" "@0.125<90" "w" "0" "0" "" "")) (defun C:PLU (/) ;draw PLine Up with arrow at second pick (command "pline" pause "w" "0" "0" pause "w" "0" "0.075" "@0.125<270" "w" "0" "0" "" ""))
GrantsPirate
Piping and Mech. Designer
Always save a copy of the drawing before trying anything suggested here.
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If something I wrote can be interpreted two ways, and one of the ways makes you sad or angry, I meant the other one.
wow!!!
that's great! As soon as possible I'll try it (next week I'll in vacation... 
).
bye
Hello @Anonymous,
that was a long vacation You never came back to tell us which way to go here. Was it the dynamic Block or the lisp routine or another way?
Please share your experience with the readers of this forum - I am sure they will be thankful.
Thank you
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Please accept as solution if my post fully resolves your issue, or reply with additional details if the problem persists.
hello to everyone,
I'm came back from vacancy and from .... hard work days!
It seems there is not solution for the question about the arrow. I've tried LISP routine, but none results.
the only solution is to use AutoCad P&ID, on the other hand this is the application fit for porpouse... 
.
it's all for now, bye
Davide
Agreed, @Anonymous,
use the right tool for the job As you said P&ID.
But maybe you will find this kind of handy. And if I am not mistaken, this is what @GrantsPirate tried to accomplish with his lisp routine.
Regards
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Please accept as solution if my post fully resolves your issue, or reply with additional details if the problem persists.
Please accept as solution if my post fully resolves your issue, or reply with additional details if the problem persists.
Accepted solution