Python: display result Table after calculation

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1

Is there a way to display the result table by default?
I have created it but it is hidden by default, I must go to Data module and open the eye manually. I want to do this in my python script. The table shall be displayed in the tables widget.

If I try to force by widget logic this happens

>>> slicer.qMRMLTableWidget().setMRMLTableViewNode(tablenode)
Traceback (most recent call last):
  File "<console>", line 1, in <module>
TypeError: method requires a vtkMRMLTableViewNode, a vtkMRMLTableNode was provided.

And there is nothing like setMRMLTableNode.

2

I also tried the following:

>>> tableview = slicer.mrmlScene.AddNewNodeByClass('vtkMRMLTableViewNode')
>>> tableview.SetTableNodeID(tablenode.GetID())
>>> slicer.qMRMLTableWidget().setMRMLTableViewNode(tableview)
>>> slicer.mrmlScene.AddNode(tableview)
(MRMLCorePython.vtkMRMLTableViewNode)0x124ee34c8

but still nothing

3

This example shos how to do this with plots (https://gist.github.com/hherhold/0492146f70ef0fc511b7b21410264481) but I want to do it with tables
I tried the equivalent procedure but it does not work: The tableWidget.mrmlTableViewNode() method does not exists. It has however the tableWidget.setMRMLTableViewNode(), but no way to get it.
What am I missing here?

4

This was harder than I thought, but finally came to a working code:

    # Creation of your table
    resultsTableNode = (...)
    # Create the layout manager to show the table
    layoutManager = slicer.app.layoutManager()
    layoutTable = slicer.modules.tables.logic().GetLayoutWithTable(layoutManager.layout)
    layoutManager.setLayout(layoutTable)
    # Create the table widget and assign the table
    tablewidget = layoutManager.tableWidget(0)
    tableview = slicer.mrmlScene.AddNewNodeByClass('vtkMRMLTableViewNode')
    tableview.SetTableNodeID(resultsTableNode.GetID())
    tablewidget.setMRMLTableViewNode(tableview)
5

Hmm, If I call this repetitively with another table it does not work, it creates more tableviews but the tablewidget is not refreshed. So I keep researching

6

Deep, very deep in the Slicer source code, there is the SegmentStatistic module which contains the answer, it is obscured

def showTable(self, table):
    """
    Switch to a layout where tables are visible and show the selected table
    """
    currentLayout = slicer.app.layoutManager().layout
    layoutWithTable = slicer.modules.tables.logic().GetLayoutWithTable(currentLayout)
    slicer.app.layoutManager().setLayout(layoutWithTable)
    slicer.app.applicationLogic().GetSelectionNode().SetActiveTableID(table.GetID())
    slicer.app.applicationLogic().PropagateTableSelection()
2 Likes
7

You can also use slicer.modules.plots.logic().ShowChartInLayout(plotChartNode) as shown in this example in script repository: https://www.slicer.org/wiki/Documentation/Nightly/ScriptRepository#Create_histogram_plot_of_a_volume

8

What do you mean? Is this also working with table nodes?

9

You are right, it’s only for charts, the same kind of “show” utility function could be added to tables module logic.