wrote: > Hi, >=20 > I think I vaguely remember this coming up once before on here. I need = to create and animate a Doppler radar weather type graphic. Similar to = this: >=20 > http://www.crh.noaa.gov/images/arx/top10/fayette0525.png >=20 > I need to be able to control its centre point and also the position of = colours. The centre of the 'storm' would move between predetermined = points over time.=20 >=20 > Feels like a job for Particular but I'm unsure of the most efficient = way of going about it. I have 27 different positions for the 'storm' to = move between in a minute so ideally the only manual key frames I'll be = pulling will be positional.=20 >=20 > Suggestions for start points appreciated. >=20 > Thanks.=20 --Apple-Mail=_9CB33753-10D1-40D0-91A4-F5FFF31AF927 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 Well = these sorts of questions are always fun=85 here's thinking out = loud:

- I'd be thinking about how these types of = images are generated. I'd work greyscale and then use colourama at = the end. You could eyedropper the reference still to get the same = colours.

- The images are quite low res, and = I'm guessing quite low FPS. So I'd use the mosaic effect to make = it blocky, and posterise time (either the plugin or as a time remapping = expression) to reduce the frame rate of the = animation

- There's a subtle bend in the = graphics. There are a few options for this in the distort effects, = including CC bender, CC bend it and the old stock favourite Polar = Co-Ordinates.

- I'd do the actual keyframeable = animation in a pre comp. It could be as simple as white blobs on a = transparent background. You might be fine with animating masks on = a solid, or using several small solids. But start with a simple = base composition that has just the bits you need to control. Then = add noise and grunge in another composition - you can always use fractal = noise, turbulent displace, roughen edges to create a grungy version. = Remember - greyscale is fine. add colour at the end, that's = how the real stuff is = done.

So:

1) Base pre = comp with the main elements

2) Grunge version

3) Add = mosaic effect and posterise time

4) Bender / bend it / polar = coordinates

5) Colourama

Have = fun,

-Chris

On 14/05/2014, at 6:03 PM, D <dow.hanson@gmail.com> = wrote:

Hi,

I think I vaguely remember this coming = up once before on here. I need to create and animate a Doppler radar = weather type graphic. Similar to this:

http://w= ww.crh.noaa.gov/images/arx/top10/fayette0525.png

I need to be able to control its centre point = and also the position of colours. The centre of the 'storm' would = move between predetermined points over = time.

Feels like a job for = Particular but I'm unsure of the most efficient way of = going about it. I have 27 different positions for the 'storm' to move = between in a minute so ideally the only manual key frames I'll be = pulling will be positional.

Suggestions for start = points appreciated.

Thanks.

= --Apple-Mail=_9CB33753-10D1-40D0-91A4-F5FFF31AF927--