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/*
* Copyright (c) 2008-2018 the MRtrix3 contributors.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at http://mozilla.org/MPL/2.0/
*
* MRtrix3 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* For more details, see http://www.mrtrix.org/
*/
#include "command.h"
#include "dwi/tractography/properties.h"
#include "dwi/tractography/scalar_file.h"
using namespace MR;
using namespace App;
void usage ()
{
AUTHOR = "David Raffelt (david.raffelt@florey.edu.au)";
SYNOPSIS = "Divide corresponding values in track scalar files";
ARGUMENTS
+ Argument ("input", "the input track scalar file.").type_file_in()
+ Argument ("input", "the input track scalar file.").type_file_in()
+ Argument ("output", "the output track scalar file").type_file_out();
}
using value_type = float;
void run ()
{
DWI::Tractography::Properties properties1;
DWI::Tractography::ScalarReader<value_type> reader1 (argument[0], properties1);
DWI::Tractography::Properties properties2;
DWI::Tractography::ScalarReader<value_type> reader2 (argument[1], properties2);
DWI::Tractography::ScalarWriter<value_type> writer (argument[2], properties1);
DWI::Tractography::check_properties_match (properties1, properties2, "scalar", false);
vector<value_type> tck_scalar1;
vector<value_type> tck_scalar2;
while (reader1 (tck_scalar1)) {
if (!reader2 (tck_scalar2))
break;
if (tck_scalar1.size() != tck_scalar2.size())
throw Exception ("track scalar length mismatch");
vector<value_type> tck_scalar_output (tck_scalar1.size());
for (size_t i = 0; i < tck_scalar1.size(); ++i) {
if (tck_scalar2[i] == 0.0)
tck_scalar_output[i] = 0;
else
tck_scalar_output[i] = tck_scalar1[i] / tck_scalar2[i];
}
writer (tck_scalar_output);
}
}
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