arrow overlays

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arrow overlays

dobensl
I’ve written a macro that identifies hairs in a photomicrograph, outlines them and draws arrows across their Feret’s width with the arrowhead pointing to the thin end of the hair.
 
I overlay these arrows over the original image, and it works well by and large. However in some instances I would like to delete an individual arrow line overlay and manually re-draw the arrow. I can highlight an individual arrow in the field of overlays (and I can resize it) but I have not figured out how to selectively delete it. Is there a trick to doing this? (When the offending arrow is highlighted, if I go to Image>Overlay>Remove Overlay, all the other overlays are removed, except the highlighted one, the opposite of what I'm looking for).

Thanks,

Len Dobens


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Re: arrow overlays

Jerome Mutterer-3
Len,
With the arrow highlighted, try the backspace key.

Jerome


2017-09-05 20:59 GMT+02:00 Leonard Dobens <[hidden email]>:

> I’ve written a macro that identifies hairs in a photomicrograph, outlines
> them and draws arrows across their Feret’s width with the arrowhead
> pointing to the thin end of the hair.
>
> I overlay these arrows over the original image, and it works well by and
> large. However in some instances I would like to delete an individual arrow
> line overlay and manually re-draw the arrow. I can highlight an individual
> arrow in the field of overlays (and I can resize it) but I have not figured
> out how to selectively delete it. Is there a trick to doing this? (When the
> offending arrow is highlighted, if I go to Image>Overlay>Remove Overlay,
> all the other overlays are removed, except the highlighted one, the
> opposite of what I'm looking for).
>
> Thanks,
>
> Len Dobens
>
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>



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Jerome Mutterer
CNRS - Institut de biologie moléculaire des plantes
12, rue du Général Zimmer
67084 Strasbourg Cedex
www.ibmp.cnrs.fr

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