A problem with Roi.setProperty

[Avital Steinberg]

Hi,
I'm having trouble with Roi.setProperty (or Roi.getProperty). The following
code requires an image to be open and requires one ROI to be added to the
ROI manager:

roiManager("select", 0);
Roi.setProperty("narrow",1);
print(Roi.getProperty("narrow"));

print("Property before re-select=" + Roi.getProperty("narrow"));

roiManager("select", 0);
print("Property after re-select=" + Roi.getProperty("narrow"));

When I run these lines of code, I get the following output:

1
Property before re-select=1
Property after re-select=

Why can't I select the ROI from the ROI manager again and get the property?

Thank you,
Avital

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[Rasband, Wayne (NIH/NIMH) [E]]

> On Apr 27, 2015, at 11:32 AM, Avital Steinberg <[hidden email]> wrote:
>
> Hi,
> I'm having trouble with Roi.setProperty (or Roi.getProperty). The following
> code requires an image to be open and requires one ROI to be added to the
> ROI manager:
>
> roiManager("select", 0);
> Roi.setProperty("narrow",1);
> print(Roi.getProperty("narrow"));
>
> print("Property before re-select=" + Roi.getProperty("narrow"));
>
> roiManager("select", 0);
> print("Property after re-select=" + Roi.getProperty("narrow"));
>
> When I run these lines of code, I get the following output:
>
> 1
> Property before re-select=1
> Property after re-select=
>
> Why can't I select the ROI from the ROI manager again and get the property?

... [show rest of quote]

You need to update the version of the ROI in the ROI Manager after making changes. This version of your macro

  roiManager("select", 0);
  Roi.setProperty("narrow",1);
  roiManager("update");
  print("Property before re-select=" + Roi.getProperty("narrow"));
  roiManager("select", 0);
  print("Property after re-select=" + Roi.getProperty("narrow"));

outputs

  Property before re-select=1
  Property after re-select=1

-wayne
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ImageJ mailing list: http://imagej.nih.gov/ij/list.html

[Avital Steinberg]

Hi Wayne,
Thank you for your answer - now I can use this feature to classify my ROIs,

Avital

On Tue, Apr 28, 2015 at 6:21 AM, Rasband, Wayne (NIH/NIMH) [E] <
[hidden email]> wrote:

> > On Apr 27, 2015, at 11:32 AM, Avital Steinberg <
> [hidden email]> wrote:
> >
> > Hi,
> > I'm having trouble with Roi.setProperty (or Roi.getProperty). The
> following
> > code requires an image to be open and requires one ROI to be added to the
> > ROI manager:
> >
> > roiManager("select", 0);
> > Roi.setProperty("narrow",1);
> > print(Roi.getProperty("narrow"));
> >
> > print("Property before re-select=" + Roi.getProperty("narrow"));
> >
> > roiManager("select", 0);
> > print("Property after re-select=" + Roi.getProperty("narrow"));
> >
> > When I run these lines of code, I get the following output:
> >
> > 1
> > Property before re-select=1
> > Property after re-select=
> >
> > Why can't I select the ROI from the ROI manager again and get the
> property?
>
> You need to update the version of the ROI in the ROI Manager after making
> changes. This version of your macro
>
>   roiManager("select", 0);
>   Roi.setProperty("narrow",1);
>   roiManager("update");
>   print("Property before re-select=" + Roi.getProperty("narrow"));
>   roiManager("select", 0);
>   print("Property after re-select=" + Roi.getProperty("narrow"));
>
> outputs
>
>   Property before re-select=1
>   Property after re-select=1
>
> -wayne
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

... [show rest of quote]

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