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You might want to check this out:
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.tweaking4all.com_graphics_graphics-2Dillustrator_illustrator-2Dhow-2Dto-2Ddraw-2Da-2Dsound-2Dwave_&d=DwIFaQ&c=Cu5g146wZdoqVuKpTNsYHeFX_rg6kWhlkLF8Eft-wwo&r=AGYZ7-AeerjxzYnIwL-lBLFI3SPYN3BDmku4qGQB4Tg&m=MzhFohcu9fyr3CJgveHrneLrkExibCnovSgSBbMh9Ps&s=ImLlmQk-R4c6bobffrVjNNGIy_cQJUhitd1SFwmxn0I&e=

It's hands-on but good. I am looking around for a math talk I saw about
this. I'll share it if I find it.

Dave

On Aug 7, 2018 16:08, "Britt Griswold" <[log in to unmask]>
wrote:

I worked with it some more and the results with the Mesh warp are pretty
finicky and sucky. It will take a lot of experimenting to get what I think
you want.

You may need to go find a log chart to your as an image template, do the
Zig Zag and Expand the result so you can move the waves around to match up.
This is tough also because the wave form handles do not change
proportionately in size and you push points together.

You can also try setting up the Zig Zag at its tightest setting, Expand the
result and then use the Scaling tool and the white selection arrow to scale
selected points out in one direction, repeating with one less point
selected each time. That might solve the handle scaling issue.

Britt



On 8/7/18 3:51 PM, Marjorie Leggitt wrote:

Thanks Britt.
Yep, these drawings all need to be vector files. I’ll try the
Object/Distort/Mesh tool and see how that works!!

Leggitt Design
303-394-0566
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On Aug 7, 2018, at 1:47 PM, Britt Griswold <[log in to unmask]>
wrote:

Yeah, that is a tricky one. There may be some specialty drafting plug-in
out there that would do logarithmic scaling, but I would not hold my
breath. Sounds like you want to make a slinky type wave form shape....

You might investigate the Distortion envelopes in Illustrator. You might be
able take a sine wave with the Zig Zag effect, and distort parts of it with
the Object/Distort/Mesh Envelope to squeeze a portion to narrower waves. I
tried it, and it seemed to work visually, if not mathematically.

This might be something you could accomplish in After Effects, but that is
more like animated Photoshop, not Illustrator.

Britt

On 8/7/18 3:18 PM, Karen Ackoff wrote:

Marj,

What I would do is make vertical guides spaced as required to establish
wave duration. Then I’d create a serpentine path and snap the points to the
vertical guides.

Hard to describe so I hope that’s clear.

K

>From my iPhone.

On Aug 7, 2018, at 11:56 AM, Marjorie Leggitt <[log in to unmask]> wrote:

Hey everyone,

I have an AI question: How do you make a longitudinal wave with variable
distances between the wave? The wave graduates back and forth between tight
waves to move open waves.

Thank for your help.

Marj


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