JamesTaylor Posted August 10, 2006 Share Posted August 10, 2006 over the last few weeks i've had a few occasions when modelling in AutoCAD and using the offset tool it is only offsetting a partial section of the selected line (which is a polyline, so all one piece)...... if i offset in the opposite direction it will offset a different section of the original line than before????? once it starts it doesn't stop???? anyone else suffered this, any suggestions? Link to comment Share on other sites More sharing options...
Trevor Tizard Posted August 10, 2006 Share Posted August 10, 2006 May be worth checking the z value of the polyline segments! Link to comment Share on other sites More sharing options...
JamesTaylor Posted August 10, 2006 Author Share Posted August 10, 2006 how do you mean trevor? with a standard polyline its only possible to draw along the xy plane, so all segments will be in the same plane..... if thats what you mean?? i'm actually snapping to the sectional profile of my roof tiles and drawing the original line in one go so everything is connected. the problem, just seems to start at sporadic times.... sometimes early on in a model file others, like this occasion towards the end of the modelling.... strange Link to comment Share on other sites More sharing options...
neko Posted August 10, 2006 Share Posted August 10, 2006 it seems a bit strange, but maybe the offset distance is greater than the length of the pline segment. that would explain why it works on one side (out) and not to the inside. Link to comment Share on other sites More sharing options...
JamesTaylor Posted August 10, 2006 Author Share Posted August 10, 2006 paul, if you look at the attached image you'll see that it will offset on either side of the line but only part of the original poyline actually offsets.... the profile is a pretty standard one that i use, i know that the offset value isn't too great as it'll work fine up until some random point when its just starts acting up, so earlier in the project i have had no problems offsetting the same profile by the same amount...???????? i think if the offset value is greater than the profile length so if it can't be created AutoCAD throws an error message at you..??? thanks for the suggestion and welcome to the forums!!! Link to comment Share on other sites More sharing options...
Woody Posted August 10, 2006 Share Posted August 10, 2006 James, This isn't a fix, but when weard things start happening, just world block the stuff you need into a new drawing. Its a bit like having a problem with your computer and switching it off and on. It may work? Link to comment Share on other sites More sharing options...
neko Posted August 10, 2006 Share Posted August 10, 2006 that's what is very strange - it doesn't seem to be consistent. as for my intro - i am an instructor at BCIT in burnaby (architectural building technology department). i've been 'lurking' on the forums for a few years. i have mainly been using them for hints and suggestions for VIZ/MAX, but i felt it was about time i tried to offer a little back in regards to autocad, which is my primary responsibilty at school. i hope to post quite a bit now that i've come out of the shadows. cheers Link to comment Share on other sites More sharing options...
JamesTaylor Posted August 10, 2006 Author Share Posted August 10, 2006 mark, i've tried to copy everything across to a new file but it still does it. i think the answer is going to be a re install of autoCAD..... something must be screwed up as it doesn't follow any logic. I've even rebooted the machine and its done it straight off again??? Paul, we look forward to your help, i'm sure it'll be of much help to many people but don't just restrict yourself to autoCAD.... lets see some of your work and feel free to comment anywhere else too!!!! Link to comment Share on other sites More sharing options...
neko Posted August 10, 2006 Share Posted August 10, 2006 james. i wouldn't do anything that drastic just yet. do you want to email me the file, and i'll have a look (might not return until later though) i'm assuming 2007 ? Link to comment Share on other sites More sharing options...
JamesTaylor Posted August 10, 2006 Author Share Posted August 10, 2006 cheers paul, i'll send you copy of the file when i'm back in the office tomorrow - i'm still on 2005 at the min... do you want to send me your email address through Private Mail (click on my user name, its an option under there if you haven't found it yet!) thanks again. Link to comment Share on other sites More sharing options...
neko Posted August 11, 2006 Share Posted August 11, 2006 james. i think i was sort of right the first time. i'm not saying it makes much sense, but the length of the short segment is 20 units and you were offsetting exactly 10 units. if you do the same offset with five units (twice) it works fine. if you offset 10.0001 units it works too. it is strange that it would only do a partial offset at exactly 10 units and then fail, but that's just autocad's way of saying something isn't quite right. polylines can be kind of funny that way too. hope that helps..... cheers Link to comment Share on other sites More sharing options...
JamesTaylor Posted August 11, 2006 Author Share Posted August 11, 2006 Cheers paul! That is strange… I hate things like that, when you can offset to value of 10 by offsetting 5 twice but simply offsetting 10 doesn’t work….. it makes no sense!! What is really strange is that at times it will work as expected and then suddenly decides to play up!! I’ll start offsetting by 9 or 11 to get around the issue……. Thanks for the help Link to comment Share on other sites More sharing options...
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