ft_example_stack.cpp

This example show how to output a vector in FasTensor .

Author

Bin Dong (dbin@.nosp@m.lbl..nosp@m.gov)

Version

0.1

Date

2021-05-28

Copyright

Copyright (c) 2021

/*
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FasTensor (FT) Copyright (c) 2021, The Regents of the University of
California, through Lawrence Berkeley National Laboratory (subject to
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All rights reserved.
 
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please contact Berkeley Lab's Intellectual Property Office at
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NOTICE.  This Software was developed under funding from the U.S. Department
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such, the U.S. Government has been granted for itself and others acting on
its behalf a paid-up, nonexclusive, irrevocable, worldwide license in the
Software to reproduce, distribute copies to the public, prepare derivative 
works, and perform publicly and display publicly, and to permit others to do so.
 
 
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*** License Agreement ***
 
FasTensor (FT) Copyright (c) 2021, The Regents of the University of
California, through Lawrence Berkeley National Laboratory (subject to
receipt of any required approvals from the U.S. Dept. of Energy). 
All rights reserved.
 
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You are under no obligation whatsoever to provide any bug fixes, patches,
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*/
 
#include <iostream>
#include <stdarg.h>
#include <vector>
#include <stdlib.h>
#include <math.h>
#include "au.h"
#include "DasLib.h"
 
using namespace std;
using namespace AU;
 
#define LTS 14999 //length of time series
#define CHS 201   //channels
 
double t_start = -59.9920000000000, t_end = 59.9920000000000, sample_rate = 0.00800000000000000;
 
std::vector<unsigned long long> H_size = {CHS, LTS};
Array<double> *H;
Array<double> semblanceSum_denom;
 
inline Stencil<double> stack_udf(const Stencil<double> &iStencil)
{
    std::vector<double> ts(LTS);
    for (int i = 0; i < LTS; i++)
    {
        ts[i] = iStencil(0, i);
    }
    //Remove the media
    double median = DasLib::Median(ts);
    for (int i = 0; i < LTS; i++)
    {
        ts[i] = ts[i] - median;
    }
 
    //Subset
    std::vector<double> ts_sub;
    ts_sub = TimeSubset(t_start, t_end, -59, 59, sample_rate);
    /*
    bool flag = CausalityFlagging(ts_sub, 0.05, 3.0, 10, t_start, t_end, sample_rate);
    if (flag = flase)
    {
        //Flipud(ts_sub);
    }*/
 
    std::vector<double> semblance_denom(LTS_new);
    std::vector<std::complex> coherency;
 
    for (int i = 0; i < LTS_new; i++)
    {
        semblance_denom[i] = ts_sub[i] * ts_sub[i];
    }
 
    coherency = instanPhaseEstimator(ts_sub);
 
    int temp_index;
    std::vector<unsigned long long> temp_coord = iStencil.GetCoordinate();
    temp_index = temp_coord[0];
    for (int i = 0; i < LTS; i++)
    {
        H->SetValue(H->GetValue(temp_index, i) + ts[i], temp_index, i);
    }
 
    //std::cout << "finish one file, temp_index = " << temp_index << std::endl;
    return 0;
}
 
int main(int argc, char *argv[])
{
    //Init the MPICH, etc.
    AU_Init(argc, argv);
 
    // set up the chunk size and the overlap size
    std::vector<int> chunk_size = {201, 14999};
    std::vector<int> overlap_size = {0, 0};
 
    H = new Array<double>("EP_MEMORY", H_size);
 
    //Input data, 8 by 8
    Array<double> *A = new Array<double>("EP_DIR:EP_HDF5:/Users/dbin/work/arrayudf-git-svn-test-on-bitbucket/examples/das/stacking_files/xcorr_examples_h5:/xcoor", chunk_size, overlap_size);
 
    //Result data
    H->Clone(0);
 
    std::vector<int> skip_size = {1, 14999};
    A->EnableApplyStride(skip_size);
 
    //Run
    A->Apply(stack_udf);
 
    H->Merge(AU_SUM);
 
    H->Nonvolatile("EP_HDF5:/Users/dbin/work/arrayudf-git-svn-test-on-bitbucket/examples/das/stacking_files/xcorr_examples_h5_stack.h5:/xcoorstack");
 
    //Clear
    delete A;
    delete H;
 
    AU_Finalize();
 
    return 0;
}