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XtraCAD Forum / General AutoCAD Queries... / Shadow Layers Moderated by Admin, Andy Robins, Nick Hyland  
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CounterFitter
Plumber Playing Fitter

From: SoCal
Registered: 06-April-2006
Posts: 86
We are having a problem with duplicate or shadow layers showing up in our layer manager. The hospital project we are working on requires multiple drawings per floor for each discipline. There are nearly 20 x-refs in any given drawing. In the layer manager, besides the working drawings specific layers, there are the layers for every x-ref. The problem is that each x-ref contains, not only its specific layers, but the layers of every cadmech/duct drawing that is x-reffed in to them. This only occurs with cadmech/duct oriented layers, not basic autocad ones.

These layers can be purged out, because they don't contain any objects and are essentially shadow layers. Unfortunately, they repopulate as soon as the drawing is reloaded.

If there is a solution to this 'long winded' issue i would sure appreciate it.

thanks


_______________________________________
Sam Anderson - Local 230
Revit MEP 2010 Suite / Autodesk NavisWorks 2010 / HP xw600 64bit
V 2.38.177 Loc 17
9'-0"EPS Stewart-Colin Pro / 7'-3"PU Robin Prodanovich-Quad

29-July-2010 17:29:43
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audiocycle
Senior Member

From: Atlanta, GA
Registered: 05-January-2009
Posts: 144
Is the XREF files XREF's are utilizing "Overlay" & not "Attach" in the XREF Manager dialog box?

_______________________________________
Barry
Intell(R) Core(TM) i7 CPU 920 @ 2.67GHz /12 GB of RAM
NVIDIA QuadroFX 1800 768MB/ Vista Ultimate SP 2 /64 bit
AutoCAD 2008 / 2.38.218 LK18 / Navis Manage 2010

29-July-2010 20:13:50
   
jhoward
Senior Member

Registered: 25-February-2009
Posts: 104
you may also want to try a -purge

from what I am told it purges more than the dialog version (ie. registered applications and such). I wouldn't think after purging them and doing a save/close that they could come back into the drawing unless something is inviting them (like a registered application that is saving itself with the drawing). People abuse those damn things. I purge 6000+  of them out of a drawing once.... if that's not abuse of bad archaic ideas I don't know what is :)


30-July-2010 01:23:29
   
cjehly
Jack-of-All Trades

From: Dakota County, MN
Registered: 06-November-2006
Posts: 635
Audiocycle hit the nail I think. Otherwise....

In the Layer Dialog Box, on the Left-hand side, select XREF to highlight all the XREF layers.  Then, down below (same side) check the INVERT SELECTION toggle box.  This should make you ever-so-happy, and hide those evil Shadow Layers.


_______________________________________
-Chris

30-July-2010 07:29:38
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CounterFitter
Plumber Playing Fitter

From: SoCal
Registered: 06-April-2006
Posts: 86
thanks for the responses...

* all x-refs are overlayed - we never attach an x-ref.

* we do execute -purge, then delete (R) regapps, and layers (LA).

* i do invert selection to view only my working drawings layers, but thats basically a filter, not a "cure".

i don't rmember these shadow layers on any previous jobs, but i may be mistaken. this project is huge. in house we have 2 duct dwgs, 2 mech pipe, 2 plmb pipe, and 2 waste/vent dwgs per floor. every dwg is x-reffed in to each dwg. thats a boatload of shadow layers. we have quad core processors with 32g of ram and it can take over 2 min to open the layer manager. if i am in the MP-01A dwg, and viewing the layers of the x-rev P-01A, i see all the layers of every dwg that is x-reffed into x-rev P-01A. Basically, every cadmech/duct layer is multipled 8 times if there are 8 x-refs. to compound this, if i am using Navis Review and converting x-refs rather than appending each dwg, all these layers show up in the selection tree also. I am still hoping there is a cadmech solution.

Chris, hows the land of 10,000 lakes working for you?


_______________________________________
Sam Anderson - Local 230
Revit MEP 2010 Suite / Autodesk NavisWorks 2010 / HP xw600 64bit
V 2.38.177 Loc 17
9'-0"EPS Stewart-Colin Pro / 7'-3"PU Robin Prodanovich-Quad

30-July-2010 15:20:11
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cjehly
Jack-of-All Trades

From: Dakota County, MN
Registered: 06-November-2006
Posts: 635
I'm loving Minnesota tremendously,  Sam... Who would of thought eh?  Seriously though, its as nice as San Diego outside of the weather, which I've adapted to fairly well.

Regarding your project, you're going to have to stop having all of those xrefs loaded at one time, plain and simple.  You're describing a project that would cripple even the stoutest of computers trying to run Autocad. 

I still have no clue what a shadow layer is though... Can you take a screenshot ?

Last edited by cjehly (30-July-2010 21:13:18)


_______________________________________
-Chris

30-July-2010 21:12:02
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