T.R | Title | User | Personal Name | Date | Lines |
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1402.1 | Supposed graphical aid | SUBWAY::BERG | | Mon Mar 25 1991 14:08 | 4 |
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Sorry, I was assuming latest version of NOTES. My mistake. I cann't
include DDIF pictures in this notes files. Sorry ... :-(
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1402.2 | Maybe this works (?) | SUBWAY::BERG | | Mon Mar 25 1991 14:11 | 19 |
1402.3 | Maybe this works | VMSDEV::HALLYB | The Smart Money was on Goliath | Mon Mar 25 1991 17:12 | 20 |
1402.4 | Close, but no radius | SUBWAY::BERG | | Fri Mar 29 1991 13:09 | 19 |
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Re: -1
I think that a point missed here is that we are not dealing with a true
circle, but instead randomly spaced points located about a central point.
I have no radius because d1 and d2 are NOT equal.
The problem that I have is that all of the textbooks that I have looked
at make similiar assumptions, that all angle calculations are based upon
circles. What I need is a calculation to figure out x, y coordinates
based upon triangles or other shapes that are not fixed.
Again, there must be a way to do this because it is simple to calculate
on a piece of paper. The number is always there, all that I need is a
way to calculate it.
P.S. Sorry for the delay in responding to my own problem but working in PSS,
I am frequently called away to work on other various projects and I don't
always have access to systems.
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1402.5 | supporting the answer in .3 | CSSE::NEILSEN | Wally Neilsen-Steinhardt | Fri Mar 29 1991 15:56 | 21 |
| .4> I think that a point missed here is that we are not dealing with a true
> circle, but instead randomly spaced points located about a central point.
> I have no radius because d1 and d2 are NOT equal.
Unless I am missing something, .3 gives you the answer you want. It does not
matter whether the points are on a circle or not.
It might make things clearer if you added a subscript to r and a, like this
xi = ri cos ai
yi = ri sin ai
This works for any randomly chosen point, specified by any ri and ai. It does
not matter whether there is a circle there or not.
I gather you have a simple case in that
ai = i * a1
which can make the math simpler.
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1402.6 | have you tried Cornu spiral? | CALS::GELINEAU | | Thu Oct 03 1991 12:48 | 6 |
| try looking at the Cornu (sp?) spiral graph; it's found in most
undergrad optics (physics) texts - i didn't look at your graphics so
i'm not sure if it will help but your original note made me think of
the spiral immediately.
Angela
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