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Re: Interpolate between two curves [message #75601]

Sun, 27 March 2011 08:16

Gray
Messages: 253
Registered: February 2010

Senior Member

On Mar 26, 9:49 am, Gray <grayliketheco...@gmail.com> wrote:
> On Mar 25, 9:55 pm, Gray <grayliketheco...@gmail.com> wrote:
>
>> On Mar 25, 9:27 pm, Jeremy Bailin <astroco...@gmail.com> wrote:
>
>>> Why would you need to loop with interpol?
>
>>> -Jeremy.
>
>> Because it can only handle 1-d data. I think I figured out my answer,
>> though.
>
> To elaborate: since the z-values are linear in y, then the z value
> for any x,y pair should be:
> z = 5 * [y-y_0(x)] / y_5(x)
> So I just calculate my y_0 and y_5 values for all my x's, and then my
> z's fall out.

And of course (after a geometry refresher) it's actually:
z = 5 * [y - y_0(x)] / [y_5(x) - y_0(x)]

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[Message index]

		Re: Interpolate between two curves By: Gray on Sun, 27 March 2011 08:16
		Re: Interpolate between two curves By: Gray on Sat, 26 March 2011 06:49
		Re: Interpolate between two curves By: Gray on Fri, 25 March 2011 18:55
		Re: Interpolate between two curves By: Jeremy Bailin on Fri, 25 March 2011 18:27

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