Lineweight scaling on xref? 1

[FYRGUY]

I am having trouble with the scaling of a line in a xref file. Other lines are coming across scaled properly but I have one line type called Railroad trax for a map I have drawn. On the xref file the line is just a single line without the look of RRTRX. I am using AutoCAD LT 2005. Does anyone have any ideas?

Chris

 

[bErEsTh]

Here are a couple of ideas:
1) What is the Ltscale of the drawing file that has the Xreference in it? Generally this should be 1. Because if source drawing iis where the ltscale is set at a scaled value.

2) What is the Ltscale of the drawing that has the linetype of the RRTRX? This Ltscasle is generally half the Dimscale, in rare occasions the same as Dimscale.

3) Check the properties of that specific line. Is it 1.00 or a different value. You may have to play with with this value.

4) Lastly, what is your PSLTscale? Here is the system variable explantioj if you arent sure

Controls paper space linetype scaling.

0 No special linetype scaling. Linetype dash lengths are based on the drawing units of the space (model or paper) in which the objects were created. Scaled by the global LTSCALE factor.
1 Viewport scaling governs linetype scaling. If TILEMODE is set to 0, dash lengths are based on paper space drawing units, even for objects in model space. In this mode, viewports can have varying magnifications, yet display linetypes identically. For a specific linetype, the dash lengths of a line in a viewport are the same as the dash lengths of a line in paper space. You can still control the dash lengths with LTSCALE.
When you change PSLTSCALE or use a command such as ZOOM with PSLTSCALE set to 1, objects in viewports are not automatically regenerated with the new linetype scale. Use the REGEN or REGENALL commands to update the linetype scales in each viewport.

Hope that helps

 

[FYRGUY]

Thanks for the reply. I am a long time user of AutoCAD LT, however not real clear on the scaling in paper vs model space, so I will try to answer you the best I can...

The original drawing is scaled Global at 125.00 and selection at 1.00. The RRTRX line was scaled to 5.5 to get the look I needed. When I xref them over is where the problem accures. Some of the specific lines I have scaled to achieve the look I wanted come over fine. It is just the RRTRX line that I am having problems with.

I have played around with the PSLTSCALE set to O & 1 and can't see any differences.

Does this explain it any more?

Chris

 

[bErEsTh]

Well here is my best explanation.
In your base drawing (where your work is) the Ltscale should be half the Dimscale. So that means, if the floor plan, or in your case the site/ civil plan is 1"=30'-0", the Dimscale would be 360 and the Ltscale should be half, or 180.

Now when you xref that drawing in the plot drawing, or another drawing that has the titleblock in it, that Dimscale in model space is still 360, but the ltscale is now 1! If you make the mistake like i have so often seen, and make that Ltscale 180, all the linetypes in the Xref are now at 180x180 and you will see all solid lines where their should be definitive linetypes throughout the drawing (or the Xref). In the drawing that you xreferenced any line drawn will be fine, if the Ltscale was 180. But again this is a No-no.

So basically, the whole idea is you have the base drawing that has all the work in it where the Dimscale is set to the proper scale,(ie. 1/8"-1'-0" would be 96 or 1"=50'-0" would be 600)and the Ltscale is half. When you reference that base drawing in the plot drawing, anything enetered in modelspace of the plot drawing would still need a scale of 96 or 600, but the Ltscale is 1. You dont want the Ltscale to get multiplied.

The big problem arises when you scale any specific line to anything other than 1.00. My suggestion is leave it at 1 and see what it looks like in the plot drawing, not the base drawing where the line actually resides. From there slight ly bump up/down the value for that specific linetypes scale.

I knew it probably wasnt the PsLTscale but its ggod to get familar with since it can play a lrge role in linetypes not comong out properly. Something to be aware of.

 

[bErEsTh]

Just a quick reiteration on Psltscale

0 = Scaled by the global LTSCALE factor. (half the Dimscale)
1 = Viewport scaling governs linetype scaling, whatever it is set to. Highlight viewport and click properties. Use regen an you may see difference.

 

[FYRGUY]

Thank you very much. I will go through your response and figure it out. This has been very helpful.

Chris