| Discussion: | All Topics |
| Topic: | Generating a graph curve from 2 known points and a middle reference point. |
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| Subject: | RE: Generating a graph curve from 2 known points and a middle reference point. |
| Author: | Mathman |
| Date: | Aug 9 2006 |
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>The last time I did formal maths was at 16
> with a crap teacher so please forgive me if there is an obvious way
> of doing this that I have missed.
You almost lost me there, but I'll forgive the slip ....this time.
Trying to translate your meaning...
You have two points at the extremes (0,40) and (50,-70).
The times for the points you need are 1 second apart. Now the fun begins:
You MUST know the nature of the curve in order to find the points between.
Otherwise there is an infinite number of solutions. If it is linear [a line]
then the interval between 40 and 70, being 40-(-70) will be 110. That must
also be divided equally into 50 parts. So each part will measure 110/50 =
2.2.
Pairs [points] will then be (0,40), (1,37.8), (2,35.6), (3,33.4), .... and so on
to (50, -70).
However, if not linear, you must say what the relation is that determines the
interval, for it will then not be equal intervals.
You can do this on a spreadsheet if you have trouble ...being a programmer, that
should not be difficult.
David.
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