Kent
A drawing with lines will be slightly smaller in size compared to one with
polylines, BUT, if you use polylines to represent objects, you might have 10
polylines in one drawing, but 100 lines in another drawing showing the same
information. Now, the polyline drawing is smaller insize compared to the
line drawing.
One or two reasons for using polylines. First, I don't think civil types
could live with out plines. Second, if you are drawing the center line of a
wall, pipe, road, duct, etc. If you use plines, then you can offset either
direction and you instantly have cleaned up connected corners. Try that
with line and you will be filleting multiple lines over and over. Third,
you can fillet plines very simply over any number of corners, with lines you
must select lines over and over and over.
Those are just a few reasons to use plines. I don't use plines to show
width except in very special circumstances, letting the CTB's and STB's do
that instead.
As for Dynamic Lengthen, well with a very simple customize tool button I
align my ucs with the pline, grip stretch, pick again to go back to WCS.
HTH
Kent Elrod
"Kent Cooper, AIA" wrote in message
news:405b2a36$1_1@newsprd01...
> I'm just curious as to why one would want to do this. Don't polylines
take
> more memory? They contain not only the usual endpoints, layer, color,
> linetype & ltscale, and all that information, but also width information
> (even if it's zero), and potentially different z-coordinates for all
> endpoints rather than one global elevation relative to the coordinate
> system.
>
> If you would do it in order to join adjacent ones into longer polylines
> (whether to save memory in many cases, or to be able to select a bunch
with
> one pick), well, you can do that without turning them into polylines
first.
> And I know of at least one actual limitation: you can't use Lengthen's
> DYnamic option on a polyline, as you can on a line. I can't think of any
> reason why an individual line segment would be better off being a
polyline,
> unless you want to have the ends at different z-coordinates, but certainly
> you wouldn't change every line in a drawing for that. Is there some other
> reason for doing this that I'm not thinking of?
>
> Kent Cooper, AIA
> "Tim" wrote...
> > try this
> >
> > (DEFUN C:L2P() ;Globally converts all lines into polylines.
>
>