[Scilab-users] pixel level programming

[Jean-Philippe Grivet]

Thank you ¨M: I'll try that.

JP Grivet


Le 17/04/2018 à 17:52, P M a écrit :
> 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 
> <mailto: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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