Re: how to mark single pixel in a overlay

Posted by Volker Baecker on Jan 07, 2016; 1:28pm
URL: http://imagej.273.s1.nabble.com/how-to-mark-single-pixel-in-a-overlay-tp5015334p5015336.html

Hello,
maybe you could use

makePoint(x, y);
Overlay.addSelection;
run("Select None");

to add a point selection to the overlay.

Volker


Jeremy Adler:

> I am want to use the overlay to mark a single pixel in an image that has been zoomed to show individual pixels - within a macro.
>
> But I cannot see how to mark a single pixel in the overlay.
> Overlay.drawRect   marks an area of 2x2 pixels centred on my target pixel but 1x1
> Overlay.drawLine  with the two positions set the same, marks a single pixel offset
>
> I can mark a single pixel using the ROI manager and then move it and convert it to an overlay, but this seems unduly cumbersome, is there a better way of marking single pixels in a overlay ?
>
>
> Dr Jeremy Adler
> Senior res engineer
> BioVis
> Dag Hammarskjölds väg 20
> Uppsala Universitet,  752 37 Uppsala ,Sweden
>
>
>
> [phone]
>
> http://www.biovis.uu.se
>
>
>
>
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