Does anybody know why the extend, trim, and perpendicular snap don't always work? I have perpendicular snap turned on in the settings.
Is Snap on?
Paul in PA
Yes, I have esnap turned on. Some of the snaps work, like insertion, apparent intersection, nearest, but some don't.
Does the pick a snap command work?
I avoid having too many snaps set at one time. At the max I use endpoint, perp and insert at one time, but my usual is just endpoint. When I am checking closeness of field survey to deed/map points I use just endpoint and perp snaps because insert gets in the way. For that I always start from a field point number, snap perp to a line and then to the endpoint (deed/map). I generally note the offsets with arrows. Northings and Eastings do not always convey the closeness of the points. Both ways usually gets noted on the detail but only one method is used on the map of survey.
Paul in PA
It may be that you're mixing lines with elevations and lines without.
Mighty Moe may be right, I know that in older versions of MicroSurvey that is the case. If you have a scale feature or something similar, highlight both lines and put the elevation scale to 0 (zero), then try the intersect, trim, snap perpendicular, etc.
That's seems to be the problem, Mighty Moe. How do you get around it?
I can see how to do as Jeff says, but I'm working on a topo. If I set the elevation of my lines to zero, I'll have to reset them to the correct elevation after I do the snap??!!
You can change the 3d lines to 2d and then it all works but you lose your contour info. There is also a commond that will do some of what you want but I can't remember it. Apperant intersection or something.
You could always copy the linework to a dummy layer that will be deleted, then change those lines to 0 elevation.
I've always done what D.J. said. I know that it's a pain but it works. Some of the basic commands will work though. Trim will usually work for me if I have a poly with an elevation and a line without. Try exploding your contour line one time. It should retain the elevations and I think some of the commands will then work. You will have a polyline with elevations and maybe you don't want that but there is undo.
OK, thanks everybody for the help.
"Flatten" command should work. But like others have said, copy to a new layer or your contours won't work.
well, I don't work with 3-d lines, but that is about the dumbest thing I've ever heard of. Why can't the programmers just make the snap commands work between any two Z values when they share x and y???
Wouldn't you think? I can see the problem with some commands like extend. How can a line with a 0' elevation extend into a line at 5000'? But for intersection and such.....
You can set your drawing to 2d also and work that way, of course then you're constantly going back and forth. I just figure most of my drawings will be done im my old Autocad 2000 program and 2010 is used when I need it for some reason. Seem to get out drawings out about 30% faster in the old program with less problems like crashes and dumb things cropping up like the colored background for the curve table. Now that one realllly is soooo dumb.
If I could just go back to Autocad 12 I'd be happy.
Try the apparent intersection routine. APPINT?? JRL
