USAGE: striations [-r radius ] [-c center] infile outfile
USAGE: striations [-h or -help]

-t .... type ............. type of striations; choices are radial (or r)
.......................... or circular (c); default=radial
-r .... radius ........... radius from center point where striations begin;
.......................... integer>=0; default is half the minimum image dimension
-c .... center ........... center point for striation effect; center=cx,cy;
.......................... integer>=0; default is center of image
-k .... column ........... column to use for circular striations; integers;
.......................... 0<=column<width

PURPOSE: To apply radial or circular striations to image.

DESCRIPTION: STRIATIONS applies radial striations to image starting at a user specified center point and radius.

ARGUMENTS:

-t type ... TYPE of striations. Choices are radial (or r) or circular (or c). The default is radial.

-r radius ... RADIUS is the radial distance from the center point at which the striations begin. Values are integers>=0. The default is half the minimum dimension of the image.

-c center ... CENTER=cx,cy are the comma separated coordinates in the image from where the radial striations eminate. Values are integers>=0. The default is the center of the image.

-k column ... COLUMN of the polar image to use for generating the circular striations. Values are integers, such that 0<=column<width of the image. The default=0.

NOTE: Requires IM 6.4.2-8 or higher due to the use of -distort polar/depolar.

CAVEAT: No guarantee that this script will work on all platforms, nor that trapping of inconsistent parameters is complete and foolproof. Use At Your Own Risk.