1. ## point to point instead of matrix method??

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How do I plot lines (orthographically, from a section view) using the point to point method rather than the matrix method (used in manual drafting)?

I can't seem to quit using the matrix method and got in trouble for it in class already. I think I'm just not totally clear on how to do the point to point method for finding lines....

Could someone please explain it to me and if at all possible include a picture (if you can't that's fine....just thought I'd ask!). I'm too embarressed now to ask my instructor...

2. Maybe it's just me, but I think you can explain this better.
Can you include a picture?

3. I agree, needs a better explaination of what you are after.

4. sorry....I'm actually not even sure if these are terms that my instructor came up w/ or if they're universal....but I'll try to explain what it is I'm asking....

What I'm talking about is when you're drawing something in auto cad, for instance, a window.....and you have the section views of the side and the top of the window ONLY to go on. You have to pull lines over (or down, depending) from each of the views to create the drawing of what one would recognize as a window. With the "matrix method" the lines--construction lines--intersect. You pull a construction line down from one part of the window in the top view, and then you pull a construction line over from the corresponding part in the side view of the window. Where they meet up is where you draw in the object lines. This would be the matrix method. Personally, this works fine for me, but my instructor doesn't like it because it gets confusing when you have too many lines intersecting at the corners. So his method of finding object lines for a drawing is the "point to point method" b/c it's simpler and less messy looking. But I don't totally understand how to use this method and feel too stupid now to ask about.

I don't know if this clarifies anything...if not, I'll try to figure out another way to explain and try to find a picture (I don't have auto cad on my computer so I can't create one myself, right now)...

5. hmm.... do we think the teacher is talking about using OSNAP and POLAR lines to find Appearant Intersections?

6. I think you want to turn on OTRACK.

7. Have you seen the tutorials?
This one for example:

8. That "matrix" method is how we used to do it on a drawing board. Maybe the "point to point" method is about measuring the distances across and up/down to each line. I my opinion, not as good.

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It sounds like he may want you to use the .x, .y and .z points to get you using them in place of the "construction" lines.
Just a thought.

Brian

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