Help

[sige0008]

Hi all

I'm trying to colour and scale spherical glyphs using two different scalar arrays in the Polydata.Unfort unately, what I seem to be able to do is to colour *and* scale according to the one scalar array, but not be able to scale by one scalar and colour by the other. The code attached:

Can anyone help what wrong with my code?

This is data file:
1,6,3
1,6,2
2,6,4
2,3,5
6,3,2
6,3,2

from vtk import *
from vtk.tk.vtkTkRen derWindowIntera ctor import *
from Tkinter import *

def RawDataExample( ):
""" Creates 2D data inside a vtkTkRenderWind owInteractor. """
def SetScalar1():
#color grid by first set of scalars
myGrid.GetPoint Data().SetScala rs(myFirstScala r)
win.Render()
return
def SetScalar2():
##color grid by second set of scalars
myGrid.GetPoint Data().SetScala rs(mySecondScal ar)
win.Render()
return
def SetScalar3():
myGrid.GetPoint Data().SetScala rs(myThirdScala r)
win.Render()
return

# create root window
root = Tk()
root.title("Raw Data 1")
f=Frame(root)
f.pack()
heading=Label(f ,text="Raw Data")
heading.pack()
quit=Button(f,t ext="Quit",comm and=root.destro y)
quit.pack()

#set up a structured points and two arrays to hold sets of data
myGrid=vtkPolyD ata()

myPoint=vtkPoin ts()

myFirstScalar = vtkIntArray()
myFirstScalar.S etName("myfirst ")
mySecondScalar = vtkIntArray()
mySecondScalar. SetName("myseco nd")
myThirdScalar=v tkIntArray()
myThirdScalar.S etName("mythird ")

myGlyph=vtk.vtk Glyph3D()

#set up buttons to swap from 1 scalar array to the other
Scalar1btn= Button(f,text= "scalar1", command=SetScal ar1)
Scalar2btn= Button(f,text= "scalar2", command=SetScal ar2)
Scalar3btn= Button(f,text= "scalar3", command=SetScal ar3)
Scalar1btn.pack ()
Scalar2btn.pack ()
Scalar3btn.pack ()


win = vtkTkRenderWind owInteractor(ro ot, width=300, height=300)
win.Initialize( )
win.GlobalWarni ngDisplayOff()
def quit(obj=root):
obj.destroy()

ren = vtk.vtkRenderer ()
win.GetRenderWi ndow().AddRende rer(ren)

## #set grid with 6 points
## myGrid.SetDimen sions(3,2,1)
## myGrid.SetSpaci ng(1,1,0)
## myGrid.SetOrigi n(0.,0.,0.)



# read some data for 6 points

f=open('textdat a.txt', 'r')
for line in f:
#read in a line and split up into a list delimited by ,
linelist = line.split(',')
print linelist
#put two numbers into two integer arrays
myPoint.InsertN extPoint((float )(linelist[0]),(float)(linel ist[2]),0)
myFirstScalar.I nsertNextValue( (int)(linelist[0]))
mySecondScalar. InsertNextValue ((int)(linelist[1]))
myThirdScalar.I nsertNextValue( (int)(linelist[2]))

data = vtk.vtkFloatArr ay()
data.SetNumberO fComponents(2)
data.SetNumberO fTuples(3)
data.CopyCompon ent(0, myFirstScalar, 0)
data.CopyCompon ent(1, myFouthScalar, 0)
data.SetName("d ata")


myGrid.SetPoint s(myPoint)
myGrid.GetPoint Data().AddArray (data)
myGrid.GetPoint Data().SetActiv eScalars("data" )


cone=vtk.vtkSph ereSource()

myGlyph.SetInpu t(myGrid)
myGlyph.SetSour ce(cone.GetOutp ut())
myGlyph.Clampin gOff()
myGlyph.SetScal eModeToScaleByS calar()
myGlyph.SetScal eFactor(.1)
myGlyph.SetColo rModeToColorByS calar()


myMapper = vtk.vtkPolyData Mapper()
myMapper.SetInp ut(myGlyph.GetO utput())
myMapper.Scalar VisibilityOn()
myMapper.ColorB yArrayComponent ("data", 1)
myMapper.SetSca larRange(0,6)

myActor = vtk.vtkActor()
myActor.SetMapp er(myMapper)

ren.AddActor(my Actor)

# pack the win into the tk root
win.pack(fill=' both', expand=1)
win.Start()

# start the tk mainloop
root.mainloop()

RawDataExample( )

[sige0008]

Thank guys, I have found solution for this :-)

I am thinking to add another scalar array to control the shape of points

any ideas? thanks:-)