I am, admittedly, a CAD novice. I know enough to do the basics.
I have an open figure (imported as a dxf created by another program). I insert it at a certain coordinate. I want to rotate it about that point by a small amount, 0å¡09'15". Seems like this should be easy to do, maybe I am just not finding it. When I go to edit...rotate... there are three ways to do it. What is the easiest way to simply rotate this object by picking the object and typing in the small rotation angle?
Select all of the objects, type rotate, select the base point, then type in the rotation angle you'd like. Be aware of a few things though. 1. You must enter the rotation angle as decimal degrees. 2. If you want to go left, you must type in - before the angle, which is COMPLETELY backwards from the way you do it in twist screen.
Kris Morgan, post: 411264, member: 29 wrote: Select all of the objects, type rotate, select the base point, then type in the rotation angle you'd like. Be aware of a few things though. 1. You must enter the rotation angle as decimal degrees. 2. If you want to go left, you must type in - before the angle, which is COMPLETELY backwards from the way you do it in twist screen.
Right. Minus = left, plus = right.
You can rotate in surveyors units, by entering (using the OP's angle, for example) 00d09'15". Otherwise Kris is right- you'll need to convert to decimal degrees. I learned this the hard way. If you punch in "00.0915" (like how I learned in softdesk) you'll get a result you don't want.
flyin solo, post: 411266, member: 8089 wrote: Right. Minus = left, plus = right.
You can rotate in surveyors units, by entering (using the OP's angle, for example) 00d09'15". Otherwise Kris is right- you'll need to convert to decimal degrees. I learned this the hard way.
Meeee tooooo. 🙂
Kris Morgan, post: 411267, member: 29 wrote: Meeee tooooo. 🙂
That moment when you think "how long have I been doing this the wrong way?" And realize it's been... a while.
OK, so that is where I was messing up...trying to pick the rotate command off of the edit menu rather than using the built in rotate command. Thanks very much.
Usually shortcut is RO
I often the the minus wrong... U space, RO then the other way
I always wondered why negative rotated right and positive rotated left. I know there is a setting for that in options, would changing that setting reverse it. Does changing that setting affect other commands?
Maybe someone can enlighten us as to the logic in that.
billvhill, post: 411445, member: 8398 wrote: why negative rotated right and positive rotated left.
That's the way mathematics usually describes angles, opposite of azimuths, and from zero angle on the x axis.
billvhill, post: 411445, member: 8398 wrote: I always wondered why negative rotated right and positive rotated left. I know there is a setting for that in options, would changing that setting reverse it. Does changing that setting affect other commands?
Maybe someone can enlighten us as to the logic in that.
It is an AutoCad thing......
In Carlson CES and possibly other versions:
goto
Settings, Units Control, Direction
Besides Zero angle direction,
a choice of Counter-Clockwise and Clockwise is available.
In AutoCAD you can rotate by degrees, minutes, and seconds by typing it out in the command line. IE: 35d15'45"
Bill is correct, in Mathematics positive angles are measured to the left, azimuths are measured from the x axis (East), and quadrants are numbered to the left as well I-IV beginning with the NE quadrant.
So it looks like AutoCad defaults to the Mathematical mode.
RRain
The funny thing is that I have worked with many other draftsmen and have never seen any of them change that setting to clockwise. I could see why 0 is best left at east but from the comments here, it looks like we just adjust to and accept that counterclockwise setting.
billvhill, post: 411579, member: 8398 wrote: The funny thing is that I have worked with many other draftsmen and have never seen any of them change that setting to clockwise. I could see why 0 is best left at east but from the comments here, it looks like we just adjust to and accept that counterclockwise setting.
The reason that variable is never set to clockwise is that pretty much all of the earlier survey software written for AutoCAD was made as Autolisp routines. If you changed that variable many or most of those routines would break.
flyin solo, post: 411266, member: 8089 wrote: I learned this the hard way. If you punch in "00.0915" (like how I learned in softdesk) you'll get a result you don't want.
The good thing was the inverse function in Carlson was in the usual DMS standard and you could always check your results after manipulating points or objects. Watching in amazement at the commenters who had the good sense to fix the units to survey.
John Hamilton, post: 411261, member: 640 wrote: I am, admittedly, a CAD novice. I know enough to do the basics.
I have an open figure (imported as a dxf created by another program). I insert it at a certain coordinate. I want to rotate it about that point by a small amount, 0å¡09'15". Seems like this should be easy to do, maybe I am just not finding it. When I go to edit...rotate... there are three ways to do it. What is the easiest way to simply rotate this object by picking the object and typing in the small rotation angle?
Being a novice at CAD as well and a Carlson user. I see your question has been answered but, Google has been a life saver along with some of the literature I've picked up. One of our draftsman about 20 years experience says I wish I had Google back when I started I would've saved 30k. Tons of info out there.