scaling in paperspace

[spookieneti]

hi,

i use acad 2007 and i have a problem with scaling in pspace.

i'm in layout, i draw a viewport and scale it to 1:1.

in this viewport i measure an object, the result is 10 units.

i copy that viewport nearby and change its scale to let's say 1:20

i measure again the same object and the result is 10 units again...

where do i go wrong?

thanx!

[NBC]

Is your OSNAP on ?

I'm guessing it probably is. They are both displaying the same units because it is measuring the entity 'through' the viewport, as if you were measuring the entity in modelspace. Try turning OSNAP off, and see if you see a difference.

[spookieneti]

Is your OSNAP on ?

I'm guessing it probably is. They are both displaying the same units because it is measuring the entity 'through' the viewport, as if you were measuring the entity in modelspace. Try turning OSNAP off, and see if you see a difference.

 

 

thanx a lot, i did that and it worked!

but there is still a little problem: in this case, if i turned off osnap, how can i measure between the pickpoints?

[ReMark]

You didn't go wrong. That's the beauty of it. The size of the object(s) in model space did not change.

 

Any measurement taken in the layout with Osnaps disabled will return a valve that has nothing to do with the objects in model space.

[spookieneti]

You didn't go wrong. That's the beauty of it. The size of the object(s) in model space did not change.

 

Any measurement taken in the layout with Osnaps disabled will return a valve that has nothing to do with the objects in model space.

 

 

thanx but...i'm working in pspace and i turned off osnaps (as NBC told me) and now i cannot measure exactly the distances between some specific points...i can only measure them approximately.

i even tried to load the object snap toolbar and use it to pick points but the result is the same as if i have osnap on (commands used: distance and linear dimension)

[ReMark]

Then turn Osnaps back on. What? You expected the distance between two points drawn in model space to change because the viewport scale changed?

 

Maybe it was the ten cups of coffee.

 

What is being "scaled" or "measured"? Are the entities part of model space or part of the layout itself (like a titleblock and border)?

[NBC]

What? You expected the distance between two points drawn in model space to change because the viewport scale changed?

 

This used to be the case. I have no idea between which versions of AutoCAD this changed.

[ReMark]

Really?

 

I had to go check that one out. I opened a fabrication drawing for a tank I just designed. Everything is drawn full size in model space. I use a layout and set up my viewports. I have a baseplate detail for the legs in one of the viewports. Let's call this Viewport A. The scale is set as 1"=1'-0". I measure across the length of the baseplate, using Osnaps, and I get a distance of 16" (agrees with what I drew in model space). Without Osnaps the distance reads 1.3309". This is what I would expect. I copy the viewport to one side. Let's call this Viewport B. I change the scale to 3"=1'-0". I then repeat the two measurements I took in Viewport A. The results are 16" (again, just what I expect) and 3.9976". Isn't this what everyone who uses a layout would expect? If not, what are they doing differently than me?

[NBC]

Really?

 

Yup.

I think it was the version that DIMSCALE, and DIMASSOC took over from the old DIMASO. 2007 perhaps? not sure without looking

[ReMark]

Doesn't ring a bell. Not that I'm saying your wrong it's just that I did not know it worked that way at one time (or I forgot). So you're saying that in my example above the distance would have been something other than 16" even though I knew that to be dead on correct?

[NBC]

Doesn't ring a bell. Not that I'm saying your wrong it's just that I did not know it worked that way at one time (or I forgot). So you're saying that in my example above the distance would have been something other than 16" even though I knew that to be dead on correct?

 

Yes, it wouldn't have read 16". It would have read 16"/whatever the viewport was scaled to.

It caught me out a few fair times tbh

[spookieneti]

Then turn Osnaps back on. What? You expected the distance between two points drawn in model space to change because the viewport scale changed?

 

i used to do that in acad 2006.

now in 2007 not anymore - that's the problem

[ReMark]

I don't understand why that is a problem. What am I not getting here? If an object is drawn in model space at a specified length then it should "measure" dimensionally correct no matter what the viewport scale is set to. Otherwise, what's the sense?

[SuperCAD]

I've been using nearly every version of AutoCAD since 2000, and I don't ever remember a drastic change in the way objects were scaled through a view port. It doesn't matter if the VP is set to 1:1 or 1:100, what ever size/dimension that you drew your object to in modelspace is the size/dimension that you're going to get in a paperspace viewport.

 

As far as I know, it's always been that way. If you want an object to increase or decrease in physical size, then you'll have to scale it up or down in modelspace in order for it to be a different dimension in paperspace.

[NBC]

The problem is that with OSNAPS on it is not measuring it intelligently in the version the OP is using

[SuperCAD]

Huh? I've used 2007 and never experienced this problem with OSNAPS on. I'm just as confused as ReMark is on this one.

[ReMark]

Maybe the Osnaps are picking up on some other geometry that is close by. The OP expects to see one number but gets another. Could that be it?

[ReMark]

The OP wrote:

 

"i'm in layout, i draw a viewport and scale it to 1:1.

in this viewport i measure an object, the result is 10 units.

i copy that viewport nearby and change its scale to let's say 1:20

i measure again the same object and the result is 10 units again..."

 

He changed the viewport scale (in bold red) yet he expects the object to measure something other than 10 units (in bold black).

 

Here's a newsflash OP: It ain't gonna happen.

 

If you want the object in the second viewport to measure/scale smaller or bigger than the first viewport you're going to have to go into model space, make a copy of the object, and literally scale the copy up or down. In the end though what have you really accomplished?

[NBC]

Here's a newsflash OP: It ain't gonna happen.

 

It used to. I've seen it with my own eyes

[ReMark]

It used to. I've seen it with my own eyes

 

Do you recall which release? I've got access to 2010, 2009, 2007 and 2004.