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/* Copyright (c) 2008-2025 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/.
*
* Covered Software is provided under this License on an "as is"
* basis, without warranty of any kind, either expressed, implied, or
* statutory, including, without limitation, warranties that the
* Covered Software is free of defects, merchantable, fit for a
* particular purpose or non-infringing.
* See the Mozilla Public License v. 2.0 for more details.
*
* For more details, see http://www.mrtrix.org/.
*/
#include "command.h"
#include "dwi/tractography/scalar_file.h"
#include "dwi/tractography/streamline.h"
using namespace MR;
using namespace App;
void usage ()
{
AUTHOR = "David Raffelt (david.raffelt@florey.edu.au)";
SYNOPSIS = "Compare two track scalar files for differences, optionally with a specified tolerance";
ARGUMENTS
+ Argument ("tsf1", "a track scalar file.").type_file_in()
+ Argument ("tsf2", "another track scalar file.").type_file_in();
OPTIONS
+ Option ("abs", "specify an absolute tolerance")
+ Argument ("tolerance").type_float (0.0)
+ Option ("frac", "specify a fractional tolerance")
+ Argument ("tolerance").type_float (0.0);
}
using value_type = float;
void run ()
{
DWI::Tractography::Properties properties1, properties2;
DWI::Tractography::ScalarReader<value_type> reader1 (argument[0], properties1);
DWI::Tractography::ScalarReader<value_type> reader2 (argument[1], properties2);
DWI::Tractography::check_properties_match (properties1, properties2, "scalar", false);
DWI::Tractography::TrackScalar<value_type> tck_scalar1;
DWI::Tractography::TrackScalar<value_type> tck_scalar2;
auto opt = get_options ("frac");
if (opt.size()) {
const double tol = opt[0][0];
while (reader1 (tck_scalar1)) {
if (!reader2 (tck_scalar2))
throw Exception ("readable number of tracks mismatch - test FAILED");
if (tck_scalar1.size() != tck_scalar2.size())
throw Exception ("track scalar length mismatch - test FAILED");
for (size_t i = 0; i < tck_scalar1.size(); ++i) {
if (abs ((tck_scalar1[i] - tck_scalar2[i]) / (0.5 * (tck_scalar1[i] + tck_scalar2[i]))) > tol)
throw Exception ("track scalar files \"" + str(argument[0]) + "\" and \"" + str(argument[1]) + "\" do not match within fractional precision of " + str(tol)
+ " (" + str(cdouble (tck_scalar1[i])) + " vs " + str(cdouble (tck_scalar2[i])) + ")");
}
}
} else {
double tol = 0.0;
opt = get_options ("abs");
if (opt.size())
tol = opt[0][0];
while (reader1 (tck_scalar1)) {
if (!reader2 (tck_scalar2))
throw Exception ("readable number of tracks mismatch - test FAILED");
if (tck_scalar1.size() != tck_scalar2.size())
throw Exception ("track scalar length mismatch - test FAILED");
for (size_t i = 0; i < tck_scalar1.size(); ++i) {
if (abs (tck_scalar1[i] - tck_scalar2[i]) > tol)
throw Exception ("track scalar files \"" + str(argument[0]) + "\" and \"" + str(argument[1]) + "\" do not match within absolute precision of " + str(tol)
+ " (" + str(cdouble (tck_scalar1[i])) + " vs " + str(cdouble (tck_scalar2[i])) + ")");
}
}
}
CONSOLE ("track scalar files checked OK");
}
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