2011 Polylines

[Anonymous]

Since switching to 2011, I have noticed that polylines cause it to freeze everytime I select them!

They are big polylines with many segments, I guess this has something to do with it as the problem is much better with small simple lines.

Is this to do with the new grip in the centre, this is useful but if it makes the selection so slow, I would rather get rid of it!

Am I right about the cause of the problem and/or can I fix it?

Thanks

RRankine

[civilgeek]

I'm having the same problem. Did you ever find a solution?

[AlmasSuljevic]

Hello,

Do you happen to have properties palette open? If so, can you close it and see if that helped.

[civilgeek]

I've turned off properties and layer manager. Also, under system, tried optimizing for performance (ie. turned off everything as far as display enhancements go). It didn't really seem to make much of a difference.

I initially noticed the slow polyline selection as I was trying to weed complex contours. My results above are related to weeding points not just selecting polylines. I've also noticed that after the weed operation completes, that there is a serious time lag between the time the weeding window closes and the screen refteshes to when I get the crosshairs back. Any suggestions would be appreciated.

BTW, my machine specs are: Civil 3D 2011 (64bit), Win7/64, Core i5 3.2GHz, 8GB RAM, Quadro 600

Thanks,

Steve

[MikeEvansUK]

Have you tried the click and run technique? (not sure if you use expanding foam but similar) if you hold the curser over a complex polyline it will hang while it prepares for the edit functions introduced in 2011. Select it and move the curser away to stop this from happening. I only see this on polylines with large vertex numbers but worth a try.

[brianlee]

The issue has to do with the properties palette constantly wanting to do its thing calculating areas of the polylines you select. When you have several vertices, it will slow down tremendously. There's no way of avoiding this especially with contour lines.

You can simulate the problem with a blank drawing if you use the SKETCH command using type Polyline. Freehand a long polyline on the screen and then try picking the polyline. In 2011, it's S-L-O-W.

Here's a silly workaround:

1. Open the properties window

2. Draw a short new polyline and select it. (Don't select the contour or the problematic polyline or you'll have to sit and wait until the area is calculated)

3. Inside properties, look for the gray header entitled 'Geometry' and collapse it by clicking on small triangle on the gray header.

4. Try selecting the problematic polyline. It should be much faster.

5. Use another command to move the polyline to another elevation if you rely on the properties palette.

If you find a better solution, I would also like to know as well.

Thanks,

Brian Lee

CAD Masters, Inc.

www.cadmasters.com

[bf]

turn on quick properties and this alleviates the problem.  it did in my drawing

[Anonymous]

I need to have the Geometry portion of the Properties box open.  So the only work-around that works for me is to do a weed polyline vertices in drawing cleanup.  This usually works for me because i often have long contour lines (polylines) that have dozens of unnecessary vertices along the straighter portions.

[Anonymous]

I am just fighting with the long polylines problem.

Found out the next issues:

1. If I work with clean AutoCAD (derived from C3D), the things are faster

2. Switch off selection preview in options, seems bit faster

3. Switch off grips (command "grips", value=0). Much faster. Think that with so long polylines grips are not always necessary

4. Convert "old" polylines to lightweight polyline, increase the speed. Question is what are we loosing with conversion. Command "convert".

Still I do not understand why in C3D, when I move the cursor over long polylines, cursor stop for the moment (1-3 seconds), and I cannot smoothly select or do some other issues. In AutoCAD (derived from C3D installation) that does not happen. Don't know yet how to force C3D to work without that delay.

Drazen

[JeffPaulsen]

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4. Convert "old" polylines to lightweight polyline, increase the speed. Question is what are we loosing with conversion. Command "convert". 

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You are not losing any useful information. The geometry of the converted polyline is that same as the original.

[Anonymous]

We found strange issue. If you close observed polyline (Pedit, c), results are much, much faster. And it is possible to, after while, to see in properties selected polyline. Without that, AutoCAD crashed.

What would be explanation of that?

Drazen