Re: Getting a list of indexes of selected ROIs

Posted by Avital Steinberg on Jul 28, 2015; 4:54am
URL: http://imagej.273.s1.nabble.com/Getting-a-list-of-indexes-of-selected-ROIs-tp5013762p5013772.html

Hi Volko,
I don't know how to get this type of information from the ROI manager.

If the user clicks inside the ROI (on the image), there's an Imagej macro
tool that can be installed. This way, you would know the coordinates of the
click:

http://rsb.info.nih.gov/ij/macros/tools/CoordinatePickerTool.txt

Then, you can check if a ROI contains this point:

*Roi.contains(x, y)*
Returns "1" if the point *x,y* is inside the current selection or "0" if it
is not. Aborts the macro if there is no selection. Requires 1.49h. See
also: selectionContains
<http://rsb.info.nih.gov/ij/developer/macro/functions.html#selectionContains>.


I haven't done it yet (but it sounds very useful), so if someone has
written code that does something similar, it would be nice to know,

Avital


On Tue, Jul 28, 2015 at 12:22 AM, vs64 <[hidden email]> wrote:

> Sorry, if the original description of my problem wasn't clear. I am trying
> to write a macro that allows the user to manually select a number of ROIs
> from the ROI manager that contains a large number of ROIs. The macro will
> then only analyse the selected ROIs. In order to achieve this, I would like
> to get a list/array of the indexes of the selected ROIs. So, I am looking
> for an equivalent to the roiManager("index") function that returns not just
> the index of the first, but all selected ROIs.
> Any suggestions?
> Thanks,
> Volko
>
> On July 27, 2015 5:27:37 PM GMT+01:00, Avital Steinberg <
> [hidden email]> wrote:
> >Hi Volko,
> >I don't understand: aren't you the one writing the macro? In which
> >case,
> >you are the one who determines which ROIs are selected. The command
> >roiManager("index") selects the ROI that has the index "index" - it
> >doesn't
> >return anything. Similarly, the command: roiManager("select", indexes)
> >*s*elects
> >multiple ROIs. In this case, indexes is an array of indices,
> >
> >Avital
> >
> >
> >On Mon, Jul 27, 2015 at 6:27 PM, Straub, Volko A. (Dr.) <
> >[hidden email]> wrote:
> >
> >> I am trying to get a list of the indexes if multiple ROIs are
> >selected in
> >> the ROI manager to use in a macro. The function roiManager("index")
> >returns
> >> the index of the first selected ROI, but is there a way to obtain the
> >> number and indexes of multiple selected ROIs? I noticed that the
> >RoiManager
> >> class has a getIndexes() function. Is there a way to use that
> >function in a
> >> macro? I thought there was, but searching the documentation, I don't
> >seem
> >> to be able to find the right information.
> >>
> >> Any advice/pointers would be very welcome.
> >>
> >> Thanks,
> >>
> >> Volko
> >>
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> >>
> >
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