ROI widgets

[Berényi Attila]

Dear List,

I'm trying to make ROI widgets work...but after I define a region (circle, rectangle, polygon) I cannot get any information about that. How could I use this widgets? What I need is e.g. area calculation for a polygon, and similar tasks.

Thanks in advance,

Attila
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[nsavard]

Berényi Attila wrote:
> Dear List,
>
> I'm trying to make ROI widgets work...but after I define a region
> (circle, rectangle, polygon) I cannot get any information about that.
> How could I use this widgets? What I need is e.g. area calculation for
> a polygon, and similar tasks.
>
Attila,

After you define a ROI you can retrieve the extents by using the
goCWCROIManager object in JavaScript.  To test it you can add the
following line somewhere in your template:

<input type="button" onclick="alert(goCWCROIManager.geoMinX)"/>

You can also access to the extents by looking to the ROIRENDERER session
variable in PHP.

Norm
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[Berényi Attila]

Dear Norm,

Thanks for the answer, I'm close to the solution :)
I suggest everyone to use the ROIArea widget, it's a great tool!

Attila

Normand Savard írta:

Berényi Attila wrote:

Dear List,

I'm trying to make ROI widgets work...but after I define a region (circle, rectangle, polygon) I cannot get any information about that. How could I use this widgets? What I need is e.g. area calculation for a polygon, and similar tasks.

Attila,

After you define a ROI you can retrieve the extents by using the goCWCROIManager object in JavaScript.  To test it you can add the following line somewhere in your template:

<input type="button" onclick="alert(goCWCROIManager.geoMinX)"/>

You can also access to the extents by looking to the ROIRENDERER session variable in PHP.

Norm

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