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#!/usr/bin/env python
# Python example script that uses the Gnu R random table source to create an output
# table with 5 columns and 30 rows. The columns are filled random numbers drawn
# from a Normal, Poisson, Chi-square, Uniform, and Binomial distribution, respecively.
# VTK must be built with VTK_USE_GNU_R turned on for this example to work!
from vtk import *
if __name__ == "__main__":
# Define parameters for each distribution. Integers for each distribution type are
# defined in the C++ header file VTK/Graphics/vtkRRandomTableSource.h
NORMAL = 17
mean_nd = 5.0
sd_nd = 2.5
POISSON = 4
lambda_pd = 3.0
CHISQUARE = 18
k_csd = 3.0
UNIFORM = 14
lb_ud = 5.0
ub_ud = 100.0
BINOMIAL = 16
nt_bd = 100
ps_bd = 0.2
# Create R random table source
tablesource = vtkRRandomTableSource()
# Define distribution type form each output column of the table
tablesource.SetStatisticalDistributionForColumn(NORMAL,mean_nd,sd_nd,0.0,"Normal",0)
tablesource.SetStatisticalDistributionForColumn(POISSON,lambda_pd,0.0,0.0,"Poisson",1)
tablesource.SetStatisticalDistributionForColumn(CHISQUARE,k_csd,0.0,0.0,"Chi-Square",2)
tablesource.SetStatisticalDistributionForColumn(UNIFORM,lb_ud,ub_ud,0.0,"Uniform",3)
tablesource.SetStatisticalDistributionForColumn(BINOMIAL,nt_bd,ps_bd,0.0,"Binomial",4)
tablesource.SetNumberOfRows(30)
# Update table source output and print the table to the output
tablesource.Update()
table = tablesource.GetOutput()
table.Dump(30)
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