Mysterious Alien Crop Circles

[mcloughlin]

In certain drawings that are re-opened, we find a little red 12-spoked crop circle at the 0,0,0 point.  It is not a base point; it is not a UCS reference (does not disappear when UCSICON is OFF).  It is not appended to any object; it sits alone unto itself.  

The circle cannot be selected.  Consequently, it cannot be listed or otherwise manipulated.  

As you can see in the appended image showing the same drawing zoomed out and zoomed in, the mystery circle does not zoom, and its distance from other objects increases with zoom amount if these are not centered at 0,0,0.  This image contains only the 0 and defpoints layers; turning off either layer does not affect the evil circle.

What can it mean?  How may I eliminate it?

I would add ghostly theramin music if it were possible.  Thanks for the help.  

[Pointdump]

McL,

Hovering over the mysterious object, it says "Geographical Marker". Dunno.

Dave

[conormccartney3897]

GEOMARKERVISIBILTY = 0. I'm not sure what its purpose really is, it tends to center itself within the bounding box of elements in the drawing.

[andrewpuller3811 · Accepted solution]

That is the geospatial marker.

It is shown when a drawing has a geospatial coordinates system assigned to it. (Toolspace => Settings Tab => Right click the drawing name =>Units and Zone Tab of the the Drawing Settings dialogue => Zone group of controls at the bottom)

You can turn it off by typing "geomarkervisibility" at the command line (without the quotes) and setting the value to 0.

This will turn it off for the current drawing. To turn it off permanently, I have put the list command (setvar "geomarkervisibility" 0) in the acaddoc.lsp file.

[Pointdump]

Conor and Andrew,

Setting GEOMARKERVISIBILITY = 0 does indeed get rid of it.

Dave

[mcloughlin]

Thanks, Andrew.  You have defeated the aliens successfully.