Re: Creating picture X*Y pixel by pixel

[Massimiliano Minella]

ZWD wrote:
> 
> Hello,
> 
> I want to create a picture e.g. 640x480 and want to be able to change the
> color of each pixel.
> So I want to create a picture pixel by pixel(and being able to say pixel
> on 235x198 has the color grey) and save it as a .jpg
> 
> Im a beginner in octave so any help would be great
> 
> 
> Thanks
> ZWD
> 

You can create a .jpg picture with "imwrite"

> imwrite(A, "foo.jpg")

Create the image "foo.jpg" described by A, where A is a matrix m x n x 3 (in
your case 640x480x3) and the third dimension represent the RGB color of your
pixel.

HTH,
Max
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