ENH: added a test for non-numerical ordinal data
ENH: added a test for non-numerical ordinal data

sumedhasingla/VTK,hendradarwin/VTK,collects/VTK,berendkleinhaneveld/VTK,naucoin/VTKSlicerWidgets,aashish24/VTK-old,msmolens/VTK,hendradarwin/VTK,candy7393/VTK,gram526/VTK,mspark93/VTK,demarle/VTK,cjh1/VTK,collects/VTK,jeffbaumes/jeffbaumes-vtk,mspark93/VTK,sankhesh/VTK,gram526/VTK,ashray/VTK-EVM,collects/VTK,cjh1/VTK,SimVascular/VTK,candy7393/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,ashray/VTK-EVM,collects/VTK,arnaudgelas/VTK,hendradarwin/VTK,aashish24/VTK-old,johnkit/vtk-dev,msmolens/VTK,arnaudgelas/VTK,jmerkow/VTK,biddisco/VTK,jmerkow/VTK,keithroe/vtkoptix,spthaolt/VTK,msmolens/VTK,biddisco/VTK,keithroe/vtkoptix,Wuteyan/VTK,johnkit/vtk-dev,daviddoria/PointGraphsPhase1,aashish24/VTK-old,sankhesh/VTK,SimVascular/VTK,sumedhasingla/VTK,gram526/VTK,candy7393/VTK,jmerkow/VTK,aashish24/VTK-old,johnkit/vtk-dev,berendkleinhaneveld/VTK,sankhesh/VTK,demarle/VTK,mspark93/VTK,SimVascular/VTK,mspark93/VTK,candy7393/VTK,demarle/VTK,arnaudgelas/VTK,msmolens/VTK,cjh1/VTK,msmolens/VTK,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,mspark93/VTK,sankhesh/VTK,daviddoria/PointGraphsPhase1,demarle/VTK,daviddoria/PointGraphsPhase1,spthaolt/VTK,hendradarwin/VTK,naucoin/VTKSlicerWidgets,cjh1/VTK,spthaolt/VTK,collects/VTK,johnkit/vtk-dev,jeffbaumes/jeffbaumes-vtk,keithroe/vtkoptix,Wuteyan/VTK,gram526/VTK,candy7393/VTK,spthaolt/VTK,aashish24/VTK-old,berendkleinhaneveld/VTK,ashray/VTK-EVM,biddisco/VTK,Wuteyan/VTK,biddisco/VTK,msmolens/VTK,arnaudgelas/VTK,mspark93/VTK,sumedhasingla/VTK,demarle/VTK,keithroe/vtkoptix,biddisco/VTK,aashish24/VTK-old,Wuteyan/VTK,msmolens/VTK,gram526/VTK,johnkit/vtk-dev,cjh1/VTK,daviddoria/PointGraphsPhase1,candy7393/VTK,gram526/VTK,naucoin/VTKSlicerWidgets,jeffbaumes/jeffbaumes-vtk,ashray/VTK-EVM,naucoin/VTKSlicerWidgets,candy7393/VTK,jmerkow/VTK,ashray/VTK-EVM,msmolens/VTK,sankhesh/VTK,naucoin/VTKSlicerWidgets,sumedhasingla/VTK,mspark93/VTK,SimVascular/VTK,berendkleinhaneveld/VTK,Wuteyan/VTK,keithroe/vtkoptix,sumedhasingla/VTK,gram526/VTK,ashray/VTK-EVM,berendkleinhaneveld/VTK,spthaolt/VTK,jmerkow/VTK,johnkit/vtk-dev,berendkleinhaneveld/VTK,Wuteyan/VTK,SimVascular/VTK,SimVascular/VTK,sumedhasingla/VTK,keithroe/vtkoptix,ashray/VTK-EVM,demarle/VTK,keithroe/vtkoptix,daviddoria/PointGraphsPhase1,spthaolt/VTK,sumedhasingla/VTK,ashray/VTK-EVM,hendradarwin/VTK,SimVascular/VTK,biddisco/VTK,SimVascular/VTK,candy7393/VTK,jmerkow/VTK,arnaudgelas/VTK,arnaudgelas/VTK,gram526/VTK,mspark93/VTK,biddisco/VTK,jmerkow/VTK,Wuteyan/VTK,jeffbaumes/jeffbaumes-vtk,naucoin/VTKSlicerWidgets,hendradarwin/VTK,sumedhasingla/VTK,collects/VTK,demarle/VTK,sankhesh/VTK,spthaolt/VTK,cjh1/VTK,keithroe/vtkoptix,daviddoria/PointGraphsPhase1,sankhesh/VTK,jeffbaumes/jeffbaumes-vtk,hendradarwin/VTK,demarle/VTK,johnkit/vtk-dev