这看起来很简单，但我很难在不同颜色的平面上表示不同的标量值。我有一个包含季节数据“dados_solo.vtk”的文件，并且具有与土壤温度“soilTemp”相对应的标量值，我必须用不同颜色表示每个季节的土壤温度数据飞机。我用 vtkStructuredGridGeometryFilter 表示它们没有问题，但现在我必须用平面表示，而不是点。
这是我到目前为止的代码：
package require vtk
package require vtkinteraction
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
# Definir o estilo de interacção
vtkInteractorStyleTrackballCamera style
iren SetInteractorStyle style
iren AddObserver UserEvent {wm deiconify .vtkInteract}
vtkDataSetReader reader
reader SetFileName "dados_solo.vtk"
reader SetScalarsName soilTemp
reader Update
vtkDataSetReader readertemp
readertemp SetFileName "dados_solo.vtk"
readertemp SetScalarsName soilTemp
readertemp Update
# Contours of the grid-----------------------------------------------------
vtkStructuredGridOutlineFilter outline
outline SetInput [reader GetStructuredGridOutput]
vtkPolyDataMapper mapOutline
mapOutline SetInput [outline GetOutput]
vtkActor outlineActor
outlineActor SetMapper mapOutline
[outlineActor GetProperty] SetColor 1 0 0
# Points of Grid-----------------------------------------------------
vtkStructuredGridGeometryFilter compPlane
compPlane SetInput [reader GetStructuredGridOutput]
vtkPolyDataMapper planeMapper
planeMapper SetInput [compPlane GetOutput]
eval planeMapper SetScalarRange \
[[[[reader GetOutput] GetPointData] GetScalars] GetRange]
planeMapper ScalarVisibilityOn
vtkActor planeActor
planeActor SetMapper planeMapper
[planeActor GetProperty] SetColor 0 1 0
# -------------------------------------------------------------------
vtkPlane plane
eval plane SetOrigin [[reader GetOutput] GetCenter]
vtkCutter planeCut
planeCut SetInput [reader GetOutput]
planeCut SetCutFunction plane
vtkPolyDataMapper cutMapper
cutMapper SetInput [planeCut GetOutput]
eval cutMapper SetScalarRange \
[[[[reader GetOutput] GetPointData] GetScalars] GetRange]
vtkActor cutActor
cutActor SetMapper cutMapper
# -------------------------------------------------------------------
ren1 AddActor cutActor
ren1 AddActor outlineActor
ren1 AddActor planeActor
renWin SetSize 500 500
ren1 SetBackground 0.1 0.1 0.1
renWin Render