How to set/select Fudicial Points one by one

Support
1

Hi slicer experts,

There are 100 coordinates in a file named 1,2,3,…100. I want to make one point’s color is different from others. For example, point 1st to 5th is red, and the 6th is yellow, the left (7th-100th) is invisible.
I load the coordinates into Slicer, firstly.

slicer.util.loadMarkupsFiducialList('fiducial_coords.fcsv')
mDisplayNode = getNode('vtkMRMLMarkupsFiducialNode1').GetDisplayNode()

Now, I want to change the point color one by one, but it will change the color of all points by using:

mDisplayNode.SetSelectedColor(0,1,0)

Does anyone know how to select one point and set the corresponding property?

Thanks is advance.

2

Within the markup list you can set each fiducial selected or not and that will change between two colors: f.SetNthFiducialSelected(0, False)

3

Thanks Pieper. Yes , it works.
Thanks again.

4

Hello, Pieper,
Do you know how to change the size of the selected fiducial?
I use the following function, but it will change all fiducial points in the list. I want to adjust size of the selected point only.

fiducialDisplayNode.SetGlyphScale(2.5)

Thanks in advance.

5

Currently it is not possible to set different scale or color options for fiducials in a single fiducial list. If you need to do that, you will have to break apart your list. (i.e., clone your existing one, or create a new empty list, and copy/paste from the original).

6

You can also create a model node with arbitrarily scaled and colored spheres, using vtkGlyph3D filter. It probably takes just a couple of lines of Python code to create a model from a point list.

If you have a script that does what you need, you can create a small Python-scripted module from it by following developer tutorials.

7

Thanks for all your suggestions and help. It is very useful.
Best wishes,