Join Shaun Bryant for an in-depth discussion in this video Using LTGAPSELECTION in AutoCAD, part of AutoCAD: Tips & Tricks.
- [Instructor] Welcome to another AutoCAD tip and trick from lynda.com. This time we're going to look at one of the new features in the AutoCAD 2017.1 update. Now you'll also find these in my AutoCAD 2017 Update course as well, where we've got some new videos added to the AutoCAD 2017 Essentials course. Where you can go and look at the new features that have come out with the 2017.1 update.
What we're going to look at is a new feature called linetype gap selection. So we've got a new drawing open for you. You can see the name at the top of the screen. And that LTGAPSELECTION is the command that you type to switch the linetype gap selection on or off. So we've got a drawing in front of us, again like I've always stated with these tips and tricks, I try and keep the drawing as simple as possible. So that we can see the technique, rather than be lost in a really busy constructional mechanical drawing.
So we have some very simple lines. We have a line here, which is on the objects layer using the linetype DASHDOTX2, as you can see there. This line here is on the objects layer, but the linetype is ByLayer, using the continuous linetype. And then you've got this line here, which is on the objects2 layer. Which again is all ByLayer. Now what I'm going to do, is I'm going to change my LTSCALE. Now sometimes when you change your LTSCALE in a drawing, you will find linetype gaps that you did not know existed.
So I go LTSCALE. At the moment it's set to not point not five. Very small scale there. If I change that to say 10, and press enter, look what happens. So you need to check your linetype scale, and make sure that the linetypes you're using are obviously at the right linetype scale. Now I've changed the global linetype scale there. So that's basically set every single dashed or dotted line to that linetype scale of 10.
If I undo what I've just done, and go back here to this line, and then all I'm going to do, is I'm going to right click and I'm going to go to Properties. Now you'll notice if I just bring the properties palette down a little bit so you can see it on the screen, the linetype scale for that particular line at the moment is one. If I change that to ten, and press enter. And then close it like that, and hit escape, it doesn't make any change. Now be aware of this. This is all to do with scaling, and the sizes of your linetypes.
So if I change that LTSCALE gobally, like so like I did previously, change that to 10 like that. Can you see, that line doesn't change now. So these LTSCALEs are really really important. You've got to make sure that the individual LTSCALE, and the global LTSCALE is set appropriately. So if I select this line again, and now right click and go to properties, and change that back to one, like so.
You'll see that that then adopts the global LTSCALE of 10 that I've just set. So now that we've got that global LTSCALE of 10 set up, we can see that we've got lines with the gaps. So I'm going to zoom in on the red line at the top. Now normally when you go to select a line, you click on that part of the line. If it's got a gap in it, you click like that, you avoid the gap in AutoCAD because normally when you click on a gap, you can't select the line.
But now you can. And that's a new feature in the AutoCAD 2017.1 update. Now LT gap selection is a variable that you can switch on and off. So if I type LTGAPSELECTION, I'll try and spell it correctly first time, there we go. Press enter. And the value at the moment is one. Which means that the LTGAPSELECTION is on. Which means I can select a gap in a dashed line. If I set that to zero, press enter. If I select the line by clicking on part of the line, I can still select it.
If I go and hover on the gap, it takes me into selection window mode like so. So LTGAPSELECTION is on by default in the 2017.1 update. Leave it on. So much easier. So I'll put it back on again. Type in one, to switch it on. And now I can select a gap. It just makes my life that little bit easier when I'm selecting dashed or dotted lines in a complicated AutoCAD drawing.
Skill Level Intermediate
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