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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkPDescriptiveStatistics.h"
#include "vtkCompositeDataSet.h"
#include "vtkDescriptiveStatistics.h"
#include "vtkDoubleArray.h"
#include "vtkLogger.h"
#include "vtkMPIController.h"
#include "vtkMathUtilities.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkNew.h"
#include "vtkSmartPointer.h"
#include "vtkTable.h"
#include <math.h>
//------------------------------------------------------------------------------
// If rank == -1, we generate all samples
vtkSmartPointer<vtkTable> GenerateTable(int rank, int numberOfRanks, vtkIdType N)
{
// We will generate a function looking like that:
// 1: a * sin(exp(-lambda * x)) + b * x
// 2: sin(x)
vtkIdType begin = (N / numberOfRanks) * rank;
vtkIdType end = rank == numberOfRanks - 1 ? N : begin + N / numberOfRanks;
if (rank == -1)
{
begin = 0;
end = N;
}
auto table = vtkSmartPointer<vtkTable>::New();
vtkNew<vtkDoubleArray> array1, array2;
array1->SetName("Array 1");
array1->SetNumberOfValues(end - begin);
array2->SetName("Array 2");
array2->SetNumberOfValues(end - begin);
table->AddColumn(array1);
table->AddColumn(array2);
double a = 1.0, b = 1.0, lambda = 1.0;
for (vtkIdType id = begin; id < end; ++id)
{
double x = static_cast<double>(id) / N;
array1->SetValue(id - begin, a * std::sin(std::exp(-lambda * x)) + b * x);
array2->SetValue(id - begin, std::sin(x));
}
return table;
}
//------------------------------------------------------------------------------
bool TablesAreSame(vtkTable* table, vtkTable* ref, vtkIdType offset = 0)
{
for (vtkIdType columnId = 0; columnId < ref->GetNumberOfColumns(); ++columnId)
{
vtkDataArray* array = vtkArrayDownCast<vtkDoubleArray>(table->GetColumn(columnId));
vtkDataArray* refArray = vtkArrayDownCast<vtkDoubleArray>(ref->GetColumn(columnId));
if (!refArray)
{
continue;
}
for (vtkIdType id = offset; id < table->GetNumberOfRows() + offset; ++id)
{
if (std::fabs(array->GetTuple1(id - offset) - refArray->GetTuple1(id)) > 1e-6)
{
vtkLog(
INFO, "id " << id << " __ " << array->GetTuple1(id - offset) - refArray->GetTuple1(id));
return false;
}
}
}
return true;
}
//------------------------------------------------------------------------------
int TestPDescriptiveStatistics(int argc, char* argv[])
{
vtkNew<vtkMPIController> controller;
controller->Initialize(&argc, &argv);
vtkMultiProcessController::SetGlobalController(controller);
int myrank = controller->GetLocalProcessId();
int numberOfRanks = controller->GetNumberOfProcesses();
int retVal = EXIT_SUCCESS;
vtkIdType N = 100000;
vtkSmartPointer<vtkTable> table = GenerateTable(myrank, numberOfRanks, N);
vtkNew<vtkPDescriptiveStatistics> stats;
stats->SetInputData(vtkStatisticsAlgorithm::INPUT_DATA, table);
stats->SampleEstimateOn();
stats->SignedDeviationsOn();
stats->AddColumn("Array 1");
stats->AddColumn("Array 2");
stats->SetLearnOption(true);
stats->SetDeriveOption(true);
stats->SetAssessOption(true);
stats->SetTestOption(true);
stats->Update();
vtkSmartPointer<vtkTable> refTable = GenerateTable(-1, numberOfRanks, N);
vtkNew<vtkDescriptiveStatistics> refStats;
refStats->SetInputData(vtkStatisticsAlgorithm::INPUT_DATA, refTable);
refStats->SampleEstimateOn();
refStats->SignedDeviationsOn();
refStats->AddColumn("Array 1");
refStats->AddColumn("Array 2");
refStats->SetLearnOption(true);
refStats->SetDeriveOption(true);
refStats->SetAssessOption(true);
refStats->SetTestOption(true);
refStats->Update();
auto outData = vtkTable::SafeDownCast(stats->GetOutputDataObject(0));
auto outModel = vtkMultiBlockDataSet::SafeDownCast(stats->GetOutputDataObject(1));
auto outTests = vtkTable::SafeDownCast(stats->GetOutputDataObject(2));
auto outRefData = vtkTable::SafeDownCast(refStats->GetOutputDataObject(0));
auto outRefModel = vtkMultiBlockDataSet::SafeDownCast(refStats->GetOutputDataObject(1));
auto outRefTests = vtkTable::SafeDownCast(refStats->GetOutputDataObject(2));
vtkLog(INFO, "Testing Model");
auto outPrimaryTable = vtkTable::SafeDownCast(outModel->GetBlock(0));
auto outRefPrimaryTable = vtkTable::SafeDownCast(outRefModel->GetBlock(0));
if (!TablesAreSame(outPrimaryTable, outRefPrimaryTable))
{
vtkLog(ERROR, "Measured statistics mismatch between single-process and multi-process.");
retVal = EXIT_FAILURE;
}
vtkLog(INFO, "Testing Assess");
// Testing outData.
// There should be a copy of the input in the first 2 columns, and the result of assessing.
if (!TablesAreSame(outData, outRefData, myrank == 0 ? 0 : N / 2))
{
vtkLog(ERROR, "Assessing statistics failed");
retVal = EXIT_FAILURE;
}
vtkLog(INFO, "Testing Tests");
// Testing outTests
if (!TablesAreSame(outTests, outRefTests))
{
vtkLog(ERROR, "Testing statistics failed");
retVal = EXIT_FAILURE;
}
controller->Finalize();
return retVal;
}
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