Differentiating between 2 vtkMRMLAnnotationROINodes

Development
1

Hello,
Let’s say I’ve done the following:

a = slicer.vtkMRMLAnnotationROINode()
slicer.mrmlScene.AddNode(a)

b = slicer.vtkMRMLAnnotationROINode()
slicer.mrmlScene.AddNode(b)

And the user is looking at an image in the red and yellow slices with these 2 ROI’s in the scene. What is a good way to modify how each vtkMRMLAnnotationROINode looks in the scene so that it is obvious to the user which one is a and which one is b?

I thought that doing

a.SetLabelText(“ROI1”)

would make the label ROI1 hover over the vtkMRMLAnnotationROINode a in the scene, but that doesn’t appear to be the case. I also tried

a.SetLineColor([255,0,0])

but I don’t see any change in what the vtkMRMLAnnotationROINode a looks like in the scene.

Thanks,
Rohan Nadkarni

2

vtkMRMLAnnotationROI does not have labels and cannot be recolored. It will not be improved any further but we will add markups ROI node instead (probably within a couple of months), which will have all these and many more features. You can track the status of this effort here.

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