[Scilab-users] pixel level programming

[P M]

Hi Grivet,

weather...yes it is

how.......if you know:

- the pixel coordinate of the pixel you want to manipulate and
- how to work with colormap ...

you should be able to manipulate a single pixel

For a start I suggest you understand how Matplot() works.
This is used in IPD to draw the image, when the ShowImage() command is used.

simple Example:

img = ones(100,100) * 256;        // white image with sioze of 100 x 100 px
ShowImage(img, "white image");
img(50,50) = 0;                         // set a single pixel to zero (=
black)
ShowImage(img, "white image with one single black pixel");

Hth,
Philipp




2018-04-16 12:53 GMT+02:00 Jean-Philippe Grivet <
jean-philippe.grivet at wanadoo.fr>:

> Hello,
>
> I would like to know whether and how it is possible to program individual
> pixels within a Scilab figure ? I have in mind a simple application: a disk
> moves inside a bounded region and changes the colour of every pixel it
> sweeps over.  Thanks for your hints.
>
> JP Grivet
>
>
>
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