I would like to make an oscillogram ( e.g. brightness level as a function of
position on a line in the picture). Can anybody help? Thanks for any advise.

Maybe I was not clear with my first post. Second try... If I draw an
arbitrary straight line on a PS image, I need to get a plot of the
brightness values of all the points alongside this line. .

"Andre De Clercq" <andre.declercq@pandora.be> wrote in message
news:1cPsf.83927$cO1.5256219@phobos.telenet-ops.be...
>I would like to make an oscillogram ( e.g. brightness level as a function
>of position on a line in the picture). Can anybody help? Thanks for any
>advise.
>

"Andre De Clercq" <andre.declercq@pandora.be> wrote in message
news:mVYsf.84448$0B2.5503069@phobos.telenet-ops.be...
> Maybe I was not clear with my first post. Second try... If I draw an
> arbitrary straight line on a PS image, I need to get a plot of the
> brightness values of all the points alongside this line. .
>
> "Andre De Clercq" <andre.declercq@pandora.be> wrote in message
> news:1cPsf.83927$cO1.5256219@phobos.telenet-ops.be... 

Rotate the image until the line is horizontal, and use the marquee tool to
copy the pixels to a new image.  Save that image and use it as a
displacement map on a 256 square image consisting of a centered horizontal
line.

This principle is used for the profile plotter action:
http://www.curvemeister.com/downloa...otter/index.htm
--

Mike Russell
www.curvemeister.com

Thanks Mike. The plot seems to work, but shows only very faint (almost
invisible) black points on the white 256x256 image. Am I still missing
something?

"Mike Russell" <RE-MOVEmike@Curvemeister.comRE-MOVE> wrote in message
news:T%Ysf.38771$dO2.15586@newssvr29.news.prodigy.net...
> "Andre De Clercq" <andre.declercq@pandora.be> wrote in message
> news:mVYsf.84448$0B2.5503069@phobos.telenet-ops.be... 
>
> Rotate the image until the line is horizontal, and use the marquee tool to
> copy the pixels to a new image.  Save that image and use it as a
> displacement map on a 256 square image consisting of a centered horizontal
> line.
>
> This principle is used for the profile plotter action:
> http://www.curvemeister.com/downloa...otter/index.htm
> --
>
> Mike Russell
> www.curvemeister.com
>
>