Selected Objects Disappearing

[jwindsor75]

When working with large plant layouts I sometimes need to copy may things from different parts of the plant. Some large some small. When I zoom in to select the smaller objects i have lost lots of objects that were selected before. Any one know of this issue or is it a monitor issue, etc..

 

thanks

[rkent]

Do you mean they are no longer in the selection set or they are actually gone from the drawing. When selecting objects you can't pick a point and then zoom or pan so some of the objects are no longer shown, they are removed from the selection set. AutoCAD has always worked this way. Zoom in for the first pick in a tight area and then zoom out to pick the second pick keeping everything still showing on screen.

[jwindsor75]

Gotcha, thanks, i was afraid of that. Usually work with smaller drawings but when you have a 500,000 sq ft building with everything from sinks to large machinery it gets tough and you always forget one small one. i just use layers and cut em off / on etc...Guess ill keep doing it. thanks for info

[Dana W]

That doesn't happen to me when I use my own 2009 AutoCad at home ever, but it does when I use the 2008 version at work. It'll work for a while but then it seems as though it'll get tired and forgetfull. I certainly don't think it's supposed to do it. Just today, I selected a bunch of dimensions to put the same override text next to the measurement all at once. When I edited the overide in, and zoomed back out part of the dimensions off sreen had become unselected and part of the off screen ones had stayed selected. Now that has to be some sort of issue in the programming. If it were not, then all of the off screen objects would have dropped off. I suspect faulty usage of virtual memory when the weenie graphics card in my work computer needs help.

 

If this is happening to you, than it is definately some ort of issue. I have a drawing open right now here at home, that is nearly a mile wide with 5 meg of stuff jambed into it. I have just selected a couple hundred items on the far left, zoomed back out, and panned all the way to the right, with my selections nearly a mile off screen to the left now. I selected another bunch on the right and panned/zoomed all over the place, with both groups of items remaining selected whether they were on the screen or not, and whether or not a command was active at the time.

 

I think the same root cause must be behind the way hatch sometimes will not function if a lot of the target area is off screen, and sometimes it will work.

 

Exactly how is one supposed to click inside a boundary that is 3/4" wide and 8'-6" tall, with all of it on the screen, anyway.

[RobDraw]

I don't think I've ever seen that happen unless I do a window selection and zoom in so that my first corner is off screen and pick second corner.

[SLW210]

What does PICKADD=?

[rkent]

Dana - The issue is starting a command like Move, picking one point, then panning over so the pick point and some objects are off the screen and then picking the second point. Anything not on the display at the time of the second pick is not in the selection set.

 

It sounds like you were picking two points, then panning over, picking two more points, which obviously works.

 

Exactly how is one supposed to click inside a boundary that is 3/4" wide and 8'-6" tall, with all of it on the screen, anyway.

 

Zoom in a draw a circle where your second pick point will be, zoom in to the other corner, start the command, pick that point, zoom out, pick the cen of the circle.

[Dana W]

Dana - The issue is starting a command like Move, picking one point, then panning over so the pick point and some objects are off the screen and then picking the second point. Anything not on the display at the time of the second pick is not in the selection set.

Hmmmmm, I never do it that way. I select first, type 'M', pick base point, zoooomy zooommmy paaannnnn paaaannnn..click insertion point, always. I guess that's why I never noticed the issue. It's such a brainstem thing at this point, I never think of another way. I tried it by selecting a boatload first, then "M", then panning waaaay over, and inserting. I did get a few dislocated dimension nodes. They shot all over the place, but the geometry was all there.

Zoom in a draw a circle where your second pick point will be, zoom in to the other corner, start the command, pick that point, zoom out, pick the cen of the circle.

I just slapped myself in the forehead and did a Homer. "duuuooogh!!" That's so simple, and much faster than hatching EVERYTHING except what I wanted to, a couple of times. Thanks muchly.

[Dana W]

I don't think I've ever seen that happen unless I do a window selection and zoom in so that my first corner is off screen and pick second corner.

I've occasionally had that happen, but it is kinda random. I still figure it's from choking the graphics card to death. It seems to happen more once the program has been open for a while and edited a good deal.