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Re: Fractional SHIFT - Typo! [message #28347]

Mon, 03 December 2001 15:50

Dick Jackson
Messages: 347
Registered: August 1998

Senior Member

Sorry, folks, one little typo spoils the whole demo.

That should read:

=====

For fun, see an image scroll *very* smoothly around itself (1/10 of a pixel
per step) with:

file = FILEPATH('rose.jpg', SUBDIR=['examples', 'data'])
READ_JPEG, file, r ;<===== fixed
for i=0,100 do tv,/true,fracshift(r,[0,i*10/100.,i*10/100.])

... then for a strange spin through colour-space (which I dedicate to the
dear, late George Harrison), try:

for i=0,100 do tv,/true,fracshift(r,[i*3/100.,0,0])

(while watching this I was put in the mind of "Within You Without You" from
Sgt. Pepper)

=====

Cheers,
--
-Dick

Dick Jackson / dick@d-jackson.com
D-Jackson Software Consulting / http://www.d-jackson.com
Calgary, Alberta, Canada / +1-403-242-7398 / Fax: 241-7392

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