Change color of a pixel on image. Plugin Java

[Danae]

Good Afternoon.

I'm currently doing a plugin for imageJ and I need to change the color of some of the pixels (given its coordinates)
I've seen how people do this on a macro but I can't figure out how to do it in JAVA.

For example, I want to change the color from black to red.


Thank you so much.

Dánae


PD: Please, don't ask me why I'm doing a plugin instead of a macro, just answer my doubt please.

[Wayne Rasband-2]

> On Mar 15, 2017, at 7:58 AM, Danae <[hidden email]> wrote:
>
> Good Afternoon.
>
> I'm currently doing a plugin for imageJ and I need to change the color of
> some of the pixels (given its coordinates)
> I've seen how people do this on a macro but I can't figure out how to do it
> in JAVA.
>
> For example, I want to change the color from black to red

Here is JavaScript code that changes the color of the pixel at 200,200 in the Leaf example image from green to red.

-wayne

   img = IJ.openImage("http://wsr.imagej.net/images/leaf.jpg");
   ip = img.getProcessor();
   ip.setColor(Color.red);
   roi = new Roi(200,200,1,1);
   ip.fill(roi);
   img.show();
   img.setRoi(170,166,70,70);
   IJ.run("To Selection", "”);


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> Sent from the ImageJ mailing list archive at Nabble.com.

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[Danae]

Thank you so much Wayne.

It has been so useful.


Have a nice day :)


Dánae