req: Golden Mean/Ratio Spiral graph

[frate]

Hello All,

Does anybody have, or can anybody generate, a spiral graph representing the Golden Mean or Golden Ratio with included inscribed rectangles, preferably within a bounding box? I keep seeing references to using this figure in cropping or composing photos. It would be really helpful to have a sizeable (i.e. vector file like postscript or eps) of this figure to occasionally superimpose on our photos.

I'm sure I'm not the only one on the board who would love to have such a file. Any of you MathCad savy types will be much appreciated!

Thanks in advance,
Dean

[jimsolt]

Hello All,

Does anybody have, or can anybody generate, a spiral graph representing the Golden Mean or Golden Ratio with included inscribed rectangles, preferably within a bounding box? I keep seeing references to using this figure in cropping or composing photos. It would be really helpful to have a sizeable (i.e. vector file like postscript or eps) of this figure to occasionally superimpose on our photos.

I'm sure I'm not the only one on the board who would love to have such a file. Any of you MathCad savy types will be much appreciated!

Thanks in advance,
Dean

Try this (http://www.vashti.net/mceinc/goldsqre.htm) on the web. I can't "generate" it for you, but there are countless web sites where it is graphically displayed. Search Fibonacci. You will find examples of the application in art, music, architecture, and a guaranteed way to use his famous formula to make money on the stock market.

Failing that, visualize a cross section of a Conch shell. You will be close.

Jim

[Jesper]

Found this in Wikipedia:
http://en.wikipedia.org/wiki/Golden_ratio

It has an image of the graph, mathematical explanations of how to make it and links to other websites at the bottom of the page.

[Chazs]

Found this in Wikipedia:
http://en.wikipedia.org/wiki/Golden_ratio

It has an image of the graph, mathematical explanations of how to make it and links to other websites at the bottom of the page.

As you can see from the link above, the golden ratio is approxiamtely 1.618. For any particular crop, multiply one dimension by 1.6 to get the longer (or multiply by 0.6 to get the shorter). You'll be within about 1% of the "Golden proportion".

[frate]

Thank you, All, for the comments. I'll keep looking for a vector image. If I find it, I'll post it here. There's more information in the image than just the proportions of the whole.

[fsohail]

Thank you, All, for the comments. I'll keep looking for a vector image. If I find it, I'll post it here. There's more information in the image than just the proportions of the whole.

Hi chaps, very useful thingy that...find it at hxxp://en.wikipedia.org/wiki/Image:Fibonacci_spiral.svg

This is vector and can be opened in Illustrator and the like. I have done so (and made a tiny mod or two). Mail me if you'd like an EPS or just grab from the above.

PS
My first post...just joined!

[Tdragone]

PS
My first post...just joined!

Quite useful information for a first post! Keep it up.

2 warnings:
1. HIDE THE CREDIT CARDS before you end up with L fever
2. STAY AWAY from the useless threads to boost your post count :)

[Jason77]

what an interesting thread. i hope it goes on for a while longer. its also nice to know that the crop factor of my xt falls within the confines of sacred geometry. ;)