Christian,
Thanks for getting me started. And sorry it took me so long to respond.
I've been moving pretty slow on this project.
Anyway, I've done the following with my script:
import math
input = self.GetInputDataObject(0,0)
output = self.GetOutputDataObject(0)
numPoints = input.GetNumberOfPoints()
points = input.GetPointData()
SurfCvg = 0
for i in xrange(numPoints):
d = points.GetArray('d').GetValue(i)
coords = input.GetPoint(i)
z = coords[3]
h = 0.00015 - abs(z - 0.00015) - 0.5*d
H0 = 2*h/d
if (H0 < 0.002)
SurfCvg = SurfCvg + 0.25*math.pi*d*d
Theta = SurfCvg/(0.01*0.001)
outputarray = vtk.vtkStringArray()
outputarray.SetName("Surface Coverage")
outputarray.SetNumberOfTuples(1)
outputarray.SetValue(0, "%d" % (Theta))
output.GetRowData().AddArray(outputarray)
First of all, am I getting the z coordinate correctly? I haven't been able
to find an answer to that in my searching. Secondly, my end goal is to
plot the value of Theta over time for my dataset. Do I have the output
stuff done right, and where do I go from there?
Thanks in advance.
-Scott
On Sat, Nov 3, 2012 at 3:53 AM, Christian Richter wrote:
> Hi,
>
> in a programmable Filter do something like this:
>
> import math
> input = self.GetInputDataObject(0, 0)
> output = self.GetOutputDataObject(0)
> COUNT=input.GetNumberOfPoints()
> pd=input.GetPointData()
> m=0
> v=0
> for i in xrange(COUNT):
> r=pd.GetArray('radius').GetValue(i)
> v=v+((4.0/3.0)*math.pi*r*r*r)
> m=m+pd.GetArray('Mass').GetValue(i)
> outputarray = vtk.vtkStringArray()
> outputarray.SetName("Text")
> outputarray.SetNumberOfTuples(1)
> outputarray.SetValue(0,"N=%d\nV=%1.6f m³\nm=%1.6f kg" % (COUNT,v,m))
> output.GetRowData().AddArray(outputarray)
>
> Attention: if you save this to a state-file change the ³ to 3 because it
> will not be escaped and you can not load the state anymore.
>
> best wishes,
> Christian
>
> Am 02.11.2012 21:49, schrieb Scott Ripplinger:
>
> I need to sum all the values in a vector of a scalar property. I've
> struggled understanding the documentation for the python calculator and
> programmable filter, mainly in how to access the point data that I want to
> use. Any tips will be appreciated.
>
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