[Tutor] zip question

[D. Hartley]

I tried to look at the image band by band, but got three
grey-scale-looking images (for r, g, and b), and one white one.

I have a feeling my clue lies in the latter, but am having a hard time
finding examples of how to manipulate that part (trying hard to avoid
a spoiler here!) in the documentation.  Any pointers? (if anyone can
even understand what I'm trying to ask here, ha ha!)

~Denise

On 5/10/05, R. Alan Monroe <amonroe at columbus.rr.com> wrote:
> > I need some pointers to solve number 7. For what I can see on that picture
> > the only hint is the gray line inside the .png drawing, but what can I do
> > with it?????????
> > Just tell me where to start and I will try to get from there
> 
> Have you ever learnt about graphics and pixel colors? You know, like
> red, green and blue combining to make colors and stuff?
> 
> Alan
> 
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