Changing threshold in python does not update in any views

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1

I want to use a shortcut to change the lower threshold of a foreground US volume to 1 (so that the black surrounding pixels disappear).

I used the code from here, and this code changes the threshold in the GUI, however, it doesn’t ‘propagate’ to any of the views - nothing changes there. I still need to manually nudge the slider/value a bit for the view to be updated.

Is there any command that needs to be executed for the view to be updated?

2

Make sure you have turned on thresholding for the display node. You can set threshold values with thresholding not enabled.

volume_node.GetDisplayNode().ApplyThresholdOn()

This will essentially change the Threshold mode combobox selection from “Off” to “Manual”. It also changes to “Manual” after manually dragging the threshold slider.

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