Problem in selecting objects

[solracesoj]

I’ve been experience a problem when selecting objects in AutoCAD.

For example I’ve a rectangle with an associated dimension linear. The origin points of the dimension linear are on the edges of the rectangle.
If I have only the rectangle inside the current zoom of the AutoCAD window and when I do an enclosing window selection (not crossing) that entirely encloses the rectangle I notice that not only the rectangle is selected but also the dimension linear (although the dimension linear isn’t enclosed by the selection window).
By the other hand, when I zoom out and have the rectangle and the dimension linear in the current zoom of AutoCAD and do again do an enclosing window only around the rectangle in this case only the rectangle is selected leaving the dimension linear out of the selection (this is what I call the normal behavior, witch is what I expect to happen always).

So why the zoom does affects the selection of the objects?

How can I uniform the behavior?

Help?

Thanks in advance,

J.C.

 

[kpetursson]

I think it an AutoCAD glitch. I have had this happen too.
I think the only fix is to not zoom in too much.

Kevin Petursson
--
"Everyone says quotable things everyday, but their not famous... so nobody cares."... Some Person

 

[bErEsTh]

I have to say this is not a glitch in CAd but more of the limits of a graphics card. Kind of like when you try to pan and cant, but when you regen you can. What version of Autocad are you running? I have never experienced this limitation going 9 versions of Autocad back. Under the options menu, selection tab, what are the choices you have selected.

 

[solracesoj]

It happens on AutoCAD 2002 and on 2004.

On AutoCAD 2004 I've the following choices on the Selection Tab:
- Noun/Verb Selection
- Implied Windowing
- Object Grouping

Can it be from one of this?
I'll try to desactivate them to see if it helps.

Any other recomendation?

Thanks

J.C.

 

[solracesoj]

This problem happens on AutoCAD 2002 and 2004.

Under the options menu, selection tab, I've the following options selected:

- Noun/Verb selection;
- Implied Windowing;
- Object Grouping.

I've tried to deselect them but still the problem happens.

So what can I try next?

Thanks

J.C.

 

[bErEsTh]

Sorry it has been awhile since I have been on ths website. I have a coupe more questions.

1) Is this drawing specific or does it happen on every drawing you open or create.

2) If you change dimension styles does it still happen? It could be migration settings that came from 2002 into 2004.

3) Are the drawing objects in modelspace or paperspace? Or does it happen in both.

Whatever the resolution might be, it most likely has something to do with the selection set.

 

[kpetursson]

I've experienced the same thing.

bErEsTH
1) It happend is ALL drawings, in all AutoCAD versions.
3) It happend in both paperspace and modelspace.
and this is NOT a graphics card issue. It happens on all of the computer i've used, in all of the versions of AutoCAD I've used (including 2005).

When you make the selection your zoomed in such that you can only see the node of the dimension, and not the rest of the lines and text.

AutoCAD dosen't seem to want to let you play with thing you can't see in the display. Because you zoom so that you can see a node, and nothing else (of the dimension) the selection set also only see the node, and so when it's inside you selection box AutoCAD adds it, and the rest of teh dimension just comes along for the ride. I do think this is a limitation of AutoCAD.

If you start a selection box, and then zoom in. AutoCAD will only select those things that are in the display when you close the selection box, even though there would be other stuff selected had you not zoom.

In my opinion this is an oversight in the AutoCAD programming, and not one I think they will ever fix. In some instances it can be useful, but most of the time it not. I want to select things I with out worring if they are displayed. Shouldn't the selection be made base on the coordinates of the selection box, and not limited by the display area?

Kevin Petursson
--
"Everyone says quotable things everyday, but their not famous... so nobody cares."... Some Person

 

[bErEsTh]

I whole-heartedly disagree with this being an oversight in Autocad programming. That is too easy of a statement to make, like saying every drawing that is problematic is corrupted. I am in constant contact with Autodesk support and my co-workers who have worked with Autodesk in the past disagree with this assessment. I would also make the concession that I am not sure of the resolution. The slection box whehter crossing or window operation is based on cordintates related to the object, not the selection box itself.

I have never experienced this problem in 7 years of drafting, not to say that it isnt a valid issue for some. I am still trying duplicate it or study the matter further.

 

[kpetursson]

To study it...
-start a blank drawing.
-draw a line from 0,0 to 1,0
-draw a line from 0,.5 to 10,.5
-draw a linear dimension from 0,.5 to 10,.5
-zoom extents
-now do a window selection from -1,-1 to 2,2
-you should have one line selected
-selecting from 2,2 to -1,-1 will select 2 line and a dimension.
-now zoom so you can not see the dimension lines, but still can see both of the line you drew. (well... you can see the 1 unit line, and part of the longer line.)
-now do a window selection (lower left to upper right) so you start below and to the left of the small line, and finish above the long line and to the right of the small line.
-before doing anything else, please note you now have a line and a dimension selected.
-zoom out (scroll wheel) you will see the whole dimension is selected.

why sould the dimension have been added to this selection set? I did not select the entier object. The long line was not added!
This also happens with blocks, and dashed (center, hidden, etc.) line. If your window selection contains all of the visible parts of an object, the object is added to the selection set, event if that object has other parts that are not currently displayed.

I suppose this is one way of intrepreting the definition of a window selection. I would think then that as you zoom (scroll wheel) the window selection box should really remain displayed in the same position relative to the program window, and not relative to the drawing entities.

Kevin Petursson
--
"Everyone says quotable things everyday, but their not famous... so nobody cares."... Some Person

 

[bErEsTh]

I know see what you mean. They were a couple of us here trying to duplicate the issue and were unable to do so until the last post. I can say that I have never experienced that issue before. I stand corrected. I like what you said in your last couple of questions and would agree with your assessment. Thanks for the elaboration.

 

[kpetursson]

No problem.

I have used microstation in the past and when making a window selection you pick window reside relative to the screen, not the drawing (When you zoom while making a window selection, the window selection move with respect to the drawing, and it does not give you the false impression that you can select thing you cannot see.)

AutoCAD also does not select things that are entirly out of the current display. If you start a window selection, and then pan side ways, any object that you think should be selected but are not on the screen, will not be selected.

Kevin Petursson
--
"Everyone says quotable things everyday, but their not famous... so nobody cares."... Some Person

 

[bErEsTh]

I know what you mean about Microstation, I have experienced what you described. Funny thing is I think in many ways Microstation is better.

 

[kpetursson]

I agree. I'm used to using autoCAD, but once I learned how Microstation works, I found it to be better in many ways.

Kevin Petursson
--
"Everyone says quotable things everyday, but their not famous... so nobody cares."... Some Person