Arcs going to pl's. PE fixes them

Got a small problem. Noticed it on two separate computers this week. Arcs and other curved lines are going to lines (with the lines making up these clearly visible and they are no longer arced/curved etc). PE (and making it a polyline I assume) fixes these and they automatically revert to their arcs as I want then etc. The arcs have not been exploded etc and thsi only occurs after saving generally.

Any solution for this?

Are you sure that they are lines? Have you clicked on it and checked with Properties? The reason I ask is that arcs and curves look straight sometimes becuase AutoCAD does not calculate them automatically - you have to use REGEN or REDRAW to get them looking round again.

This sounds like a VIEWRES issue.

I am not sure that they are lines. They are still grouped as one (as if they were still the arc/pl). Regen (or regenall) does not fix the problem.

if you click on it and bring up Properties (PR) what does it say it is?

Hmm, just tried it in a new drawing and a regen did fix it. However I defiantly tried that previously, so will post back here if the problem occurs. Thanks.

With viewres, should I turn fast zooms on or off (it is currently on)?

I think NBC's right, have you tried it? It will be a case of REGEN temporarily fixing it as well, if I'm understanding correct?

Edit- sorry guys just skimmed over the threads initially...

Check the value of VIEWRES in your drawings. It is a variable that is stored within each drawing; and is thus likely to be different in different drawings.

I think NBC's right, have you tried it? It will be a case of REGEN temporarily fixing it as well, if I'm understanding correct?

That's correct.

With viewres, should I turn fast zooms on or off (it is currently on)?

On, and set the value at least to 2000

Nevermind.

All sorted thanks, I thought this was something simple.

If you prefer using the dialogue boxes, then go OPTIONS, then;

All sorted thanks, I thought this was something simple.

soo...what did the trick? We have a pervese will to always know the right answer here you know :wink:

VIEWRES as NBC mentioned. Thanks for the excellent support guys.

Maybe some of you smart guys can help me with http://www.cadtutor.net/forum/showthread.php?t=34993

Viewres seems to be a leftover function of days gone by. When our computers were less powerfull, the view resolution could be set low for faster regens.

Now a days, with our "Gigs" of RAM, I crank my viewres all the way up (20,000) via a startup function in my ACAD.LSP file. Every drawing I open gets its viewres variable set to 20000 automaticly.

But - for me a 5 meg file is a really big one. If you are dealing with really large files, say 20 meg, viewres might be your bestest buddy.

...I crank my viewres all the way up (20,000) via a startup function in my ACAD.LSP file...

This can also be done in OPTIONS as I've shown in the attachment in a previous post.

Does doing it in the OPTIONS box set it for every drawing you open from that point on?