Zoom extents question

[Josh]

I work at a business where I receive many drawings from other businesses.
On many of these, when I use the zoom extents command in Autocad (14 or
2000, I have both), it zooms on a much larger area than what is actually
there. I have tried zooming out even more, then selecting in the area where
there doesn't appear to be anything to see if there's actually something
there. No grips show up, and if I press delete, it doesn't change the
bounds of the extents. I have tried purging all unused items, as well as
turning on all locked and/or frozen layers, but nothing seems to help. I
still have to manually zoom to what I consider the "true" extents of the
picture. Any suggestions?

Josh

[Mike]

As a guess, there is probably a point or a circle center mark out there
somewhere.

Change your POINT STYLE to something you can see and do a regen. Also
change your dimension settings for a center mark to MARK not NONE.

then do an ERASE - CROSSING on the "blank" area.

Should help.

PS - If a circle or arc center is out there, the circle/arc will disappear
if you erase its center mark. But you can always do an UNDO to fix it.

Mike

It's not fake anything, it's real plastic
=============================

Josh <jcw...@ticz.com> wrote in message
news:QiRa4.1105$Gj5....@dfiatx1-snr1.gtei.net...

[Bernd Hoffmann]

Another possibility is a blank line of text. Turn on QTEXT to find it.

Regards, Bernd
Designer
Burris Savvy Optics
http://www.burrisoptics.com/

[Matthew Taylor]

Josh <jcw...@ticz.com> wrote

> I work at a business where I receive many drawings from other businesses.
> On many of these, when I use the zoom extents command in Autocad (14 or
> 2000, I have both), it zooms on a much larger area than what is actually
> there. I have tried zooming out even more, then selecting in the area
where
> there doesn't appear to be anything to see if there's actually something
> there. No grips show up, and if I press delete, it doesn't change the
> bounds of the extents. I have tried purging all unused items, as well as
> turning on all locked and/or frozen layers, but nothing seems to help. I
> still have to manually zoom to what I consider the "true" extents of the
> picture. Any suggestions?
>

How much is much larger in relation to the actual drawing?

Is pdmode set to 1? if it is then points in the drawing are invisible, but
ar still included in the extents.

How are you trying to select the objects? with a window or a crossing
window? - If the elements at the edge are part of a block, then a normal
window won't pick them up unless the whole block is enclosed.

Zoom extents appears to zoom to the bounding box that would enclose the
drawing when viewed from plan view with the World UCS. If the drawing is
rotated, from WCS plan view, then this bounding box is still fitted on the
screen. The diagonals of this can make it a lot larger than the actual
drawing appears to be.

Are there xrefs in the drawing? These sometimes seem to alter the extents.

Hope this is of some help

Matthew Taylor

[PeteR29694]

Another possibility is a block in the drawing has an insert point way out in
space.

You might try wblocking the drawing entities into a new drawing.

[Andrew NIELSEN]

hi Josh

2 good possibilities..........

1 Blank line of text off in some far away corner.
Find by setting qtext to 1 & doing a regen the erase.
2 Limits may be either set to a large area - extents will pick up limits ;
or
the actual drwwing area may be far away from the 0,0 origin whwere the
limits are usually set to.
Move the whole drawing after thawing & turning on all layers.

Andy ;-}

Happy new year to all honest Autcad owners..

Josh wrote in message ...

>I work at a business where I receive many drawings from other businesses.
>On many of these, when I use the zoom extents command in Autocad (14 or
>2000, I have both), it zooms on a much larger area than what is actually
>there. I have tried zooming out even more, then selecting in the area
where
>there doesn't appear to be anything to see if there's actually something
>there. No grips show up, and if I press delete, it doesn't change the
>bounds of the extents. I have tried purging all unused items, as well as
>turning on all locked and/or frozen layers, but nothing seems to help. I
>still have to manually zoom to what I consider the "true" extents of the
>picture. Any suggestions?
>

>Josh
>
>

[Martin Czernatowicz]

Hi Josh,
We have similar problems, our solution is as follows.
1. Open your Erase command.
2. When prompted to select objects, type "All"
3. When prompted to select again, type "Remove" and window the visible items.
(You've now indicated to Autocad that anything not in your window is to be
erased.}
4. Hit enter, zoom extends and that should do it.

Marty

[Harry Burt]

Turning on layers...good point. I've had this problem when an off layer had
entities away from what I thought were the extents.

Andrew NIELSEN wrote:

> hi Josh
>
> 2 good possibilities..........
>
> 1 Blank line of text off in some far away corner.
> Find by setting qtext to 1 & doing a regen the erase.
> 2 Limits may be either set to a large area - extents will pick up limits ;
> or
> the actual drwwing area may be far away from the 0,0 origin whwere the
> limits are usually set to.
> Move the whole drawing after thawing & turning on all layers.
>
> Andy ;-}
>
> Happy new year to all honest Autcad owners..
>
> Josh wrote in message ...

[Culprandy]

1. LOCK all layers you want to keep.
2. Open your Erase command.
3. When prompted to select objects, type (ssget"x")

3. When prompted to select again, type "Remove" and window the visible items.
(You've now indicated to Autocad that anything not in your window is to be

erased.)

4. Hit enter, zoom extends and that should do it.

just me,
Randy

[Doug Philip]

Josh wrote:
>
> I work at a business where I receive many drawings from other businesses.
> On many of these, when I use the zoom extents command in Autocad (14 or
> 2000, I have both), it zooms on a much larger area than what is actually
> there. I have tried zooming out even more, then selecting in the area where
> there doesn't appear to be anything to see if there's actually something
> there. No grips show up, and if I press delete, it doesn't change the
> bounds of the extents. I have tried purging all unused items, as well as
> turning on all locked and/or frozen layers, but nothing seems to help. I
> still have to manually zoom to what I consider the "true" extents of the
> picture. Any suggestions?
>
> Josh

In addition to the other suggestions you have received, I have a few
more.

Short answer:
Command: ATTDISP
Normal/On/Off: ON

Long answer: Some third-party applications will use blocks with
invisible attributes to store data.
These can get copied, wblocked, inserted, copied again, etc. unknowingly
by users. And if there is nothing else in the block except invisible
attributes, then you usually won't see these blocks.
Turning the attribute display variable on will show all attributes,
visible or otherwise.

Also note that there is a difference with Text between a string
containing a space character " ", and an empty string "". I don't
think QTEXT ON displays empty strings (could be wrong though).

Good hunting!
Doug Philip.