% UTP_AO_SPLIT a set of UTPs for the ao/split method
%
% M Hewitson 06-08-08
%
% $Id: utp_ao_split_interval.m,v 1.9 2011/09/29 12:09:56 ingo Exp $
%

% <MethodDescription>
%
% The split method of the ao class splits an analysis object into the
% specified segments. This UTP splits the AOs into sample segments.
%
% </MethodDescription>

function results = utp_ao_split_interval(varargin)

  % Check the inputs
  if nargin == 0

    % Some keywords
    class   = 'ao';
    mthd    = 'split';

    results = [];
    disp('******************************************************');
    disp(['****  Running UTPs for ' class '/' mthd]);
    disp('******************************************************');

    % Exception list for the UTPs:
    [ple1,ple2,ple3,ple4,ple5,ple6] = get_test_ples();
    
    % Run the tests
    results = [results utp_01];    % getInfo call
    results = [results utp_02];    % Vector input
    results = [results utp_03];    % Matrix input
    results = [results utp_04];    % List input
    results = [results utp_05];    % Test with mixed input
    results = [results utp_06];    % Test history is working
    results = [results utp_07];    % Test the modify call works
    results = [results utp_08];    % Test input data shape == output data shape
    results = [results utp_09];    % Test output of the data
    results = [results utp_10];    % Test with AO which can collapse the x-axis
    
    n = 300;
    fs = 3;
    x = 0:(1/fs):(n/fs)-1/fs;
    a1 = ao(x, randn(n,1), fs);
    a1.setT0(a1.t0 + time('14:00:00'));
    st  = '14:00:25';
    et  = '14:01:15';
    pli  = plist('start_time', st, 'end_time', et);
    results = [results utp_11(mthd, a1, ple1, pli)];    % Test plotinfo doesn't disappear
    
    results = [results utp_12];    % Test key-words: start_time + duration
    results = [results utp_13];    % Test key-words: timespan
    results = [results utp_14];    % Test key-words: start_time + end_time
    results = [results utp_15];    % Test not equal sampled data (tsdata) and 'timeshift' option
    results = [results utp_16];    % Test not equal sampled data (tsdata) and 'timeshift' option
    results = [results utp_17];    % Test not equal sampled data (tsdata) and 'timeshift' option
     
    disp('Done.');
    disp('******************************************************');

  elseif nargin == 1 % Check for UTP functions
    if strcmp(varargin{1}, 'isutp')
      results = 1;
    else
      results = 0;
    end
  else
    error('### Incorrect inputs')
  end

  %% UTP_01

  % <TestDescription>
  %
  % Tests that the getInfo call works for this method.
  %
  % </TestDescription>
  function result = utp_01


    % <SyntaxDescription>
    %
    % Test that the getInfo call works for no sets, all sets, and each set
    % individually.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      % Call for no sets
      io(1) = eval([class '.getInfo(''' mthd ''', ''None'')']);
      % Call for all sets
      io(2) = eval([class '.getInfo(''' mthd ''')']);
      % Call for each set
      for kk=1:numel(io(2).sets)
        io(kk+2) = eval([class '.getInfo(''' mthd ''', ''' io(2).sets{kk} ''')']);
      end
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that getInfo call returned an minfo object in all cases.
    % 2) Check that all plists have the correct parameters.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % check we have minfo objects
      if isa(io, 'minfo')
        %%% SET 'None'
        idx = 1;
        if ~isempty(io(idx).sets), atest = false; end
        if ~isempty(io(idx).plists), atest = false; end
        %%% Check all Sets
        idx = 2;
        if ~any(strcmpi(io(idx).sets, 'Default')), atest = false; end
        if ~any(strcmpi(io(idx).sets, 'By times')), atest = false; end
        if ~any(strcmpi(io(idx).sets, 'By frequencies')), atest = false; end
        if ~any(strcmpi(io(idx).sets, 'By samples')), atest = false; end
        if ~any(strcmpi(io(idx).sets, 'By chunks')), atest = false; end
        if ~any(strcmpi(io(idx).sets, 'By interval start/end')), atest = false; end
        if ~any(strcmpi(io(idx).sets, 'By interval start/duration')), atest = false; end
        if ~any(strcmpi(io(idx).sets, 'By interval timespan')), atest = false; end
        if numel(io(idx).plists) ~= numel(io(idx).sets), atest = false; end
        %%%%%%%%%%   SET 'Default'
        idx = 3;
        if io(idx).plists.nparams ~= 1, atest = false; end
        % Check key
        if ~io(idx).plists.isparam('times'), atest = false; end
        % Check default value
        if ~isEmptyDouble(io(idx).plists.find('times')), atest = false; end        
        % Check options
        if ~isequal(io(idx).plists.getOptionsForParam('times'), {[]}), atest = false; end
        %%%%%%%%%%   SET 'By times'
        idx = 4;
        if io(idx).plists.nparams ~= 1, atest = false; end
        % Check key
        if ~io(idx).plists.isparam('times'), atest = false; end
        % Check default value
        if ~isEmptyDouble(io(idx).plists.find('times')), atest = false; end
        % Check options
        if ~isequal(io(idx).plists.getOptionsForParam('times'), {[]}), atest = false; end
        %%%%%%%%%%   SET 'By frequencies'
        idx = 5;
        if io(idx).plists.nparams ~= 1, atest = false; end
        % Check key
        if ~io(idx).plists.isparam('frequencies'), atest = false; end
        % Check default value
        if ~isEmptyDouble(io(idx).plists.find('frequencies')), atest = false; end
        % Check options
        if ~isequal(io(idx).plists.getOptionsForParam('frequencies'), {[]}), atest = false; end
        %%%%%%%%%%   SET 'By samples'
        idx = 6;
        if io(idx).plists.nparams ~= 1, atest = false; end
        % Check key
        if ~io(idx).plists.isparam('samples'), atest = false; end
        % Check default value
        if ~isEmptyDouble(io(idx).plists.find('samples')), atest = false; end
        % Check options
        if ~isequal(io(idx).plists.getOptionsForParam('samples'), {[]}), atest = false; end
        %%%%%%%%%%   SET 'By chunks'
        idx = 7;
        if io(idx).plists.nparams ~= 2, atest = false; end
        % Check key
        if ~io(idx).plists.isparam('N'), atest = false; end
        if ~io(idx).plists.isparam('match'), atest = false; end
        % Check default value
        if ~isEmptyDouble(io(idx).plists.find('N')), atest = false; end
        if ~isequal(io(idx).plists.find('match'), true), atest = false; end
        % Check options
        if ~isequal(io(idx).plists.getOptionsForParam('N'), {[]}), atest = false; end
        if ~isequal(io(idx).plists.getOptionsForParam('match'), {true, false}), atest = false; end
        %%%%%%%%%%   SET 'By interval start/end'
        idx = 8;
        if io(idx).plists.nparams ~= 2, atest = false; end
        % Check key
        if ~io(idx).plists.isparam('start_time'), atest = false; end
        if ~io(idx).plists.isparam('end_time'), atest = false; end
        % Check default value
        if ~eq(io(idx).plists.find('start_time'), time(0), ple1), atest = false; end
        if ~eq(io(idx).plists.find('end_time'), time(0), ple1), atest = false; end
        % Check options
        %%%%%%%%%%   SET 'By interval start/duration'
        idx = 9;
        if io(idx).plists.nparams ~= 2, atest = false; end
        % Check key
        if ~io(idx).plists.isparam('start_time'), atest = false; end
        if ~io(idx).plists.isparam('duration'), atest = false; end
        % Check default value
        if ~eq(io(idx).plists.find('start_time'), time(0), ple1), atest = false; end
        if ~eq(io(idx).plists.find('duration'), time(0), ple1), atest = false; end
        % Check options
        %%%%%%%%%%   SET 'By interval timespan'
        idx = 10;
        if io(idx).plists.nparams ~= 1, atest = false; end
        % Check key
        if ~io(idx).plists.isparam('timespan'), atest = false; end
        % Check default value
        ts = timespan(0,0);
        if ~eq(io(idx).plists.find('timespan'), ts, ple1), atest = false; end
        % Check options
      end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_01

  %% UTP_02

  % <TestDescription>
  %
  % Tests that the split method works with a vector of AOs as input.
  %
  % </TestDescription>
  function result = utp_02

    % <SyntaxDescription>
    %
    % Test that the split method works for a vector of AOs as input.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      n1  = 300;
      fs1 = 3;
      x1  = 0:(1/fs1):(n1/fs1)-1/fs1;
      a1 = ao(x1, randn(n1,1), fs1);
      n2  = 100;
      fs2 = 1;
      x2  = 0:(1/fs2):(n2/fs2)-1/fs2;
      a2 = ao(x2, randn(n2,1), fs2);
      n3  = 100;
      fs3 = .3;
      x3  = 0:(1/fs3):(n3/fs3)-1/fs3;
      a3 = ao(x3, randn(n3,1), fs3);
      a1.setT0(a1.t0 + time('14:00:00'));
      a2.setT0(a2.t0 + time('14:00:00'));
      a3.setT0(a3.t0 + time('14:00:00'));
      avec = [a1, a2, a3];
      st  = '14:00:25';
      et  = '14:01:15';
      pl  = plist('start_time', st, 'end_time', et);
      out = split(avec, pl);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the number of elements in 'out' is the same as in
    %    'avec' times numbers of intervals
    % 2) Check that each output AO contains the correct data.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check we have the correct number of outputs
      if numel(out) ~= numel(avec), atest = false; end
      % Check each output
      for kk=1:2:numel(out)
        %%%% Check Interval '14:00:25' .. '14:01:15'
        x = avec(kk).x + avec(kk).t0.double;
        y = avec(kk).y;
        % Comput start/end time
        ts = time(st).double;
        te = time(et).double;
        idx = find(x >= ts & x < te);
        % Normalize out data
        ox = out(kk).x + out(kk).t0.double;
        oy = out(kk).y;
        % Check data
        if ~isequal(ox, x(idx)), atest = false; end
        if ~isequal(oy, y(idx)), atest = false; end
      end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_02

  %% UTP_03

  % <TestDescription>
  %
  % Tests that the split method works with a matrix of AOs as input.
  %
  % </TestDescription>
  function result = utp_03

    % <SyntaxDescription>
    %
    % Tests that the split method works with a matrix of AOs as input.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      n1  = 300;
      fs1 = 3;
      x1  = 0:(1/fs1):(n1/fs1)-1/fs1;
      a1 = ao(x1, randn(n1,1), fs1);
      n2  = 100;
      fs2 = 1;
      x2  = 0:(1/fs2):(n2/fs2)-1/fs2;
      a2 = ao(x2, randn(n2,1), fs2);
      n3  = 100;
      fs3 = .3;
      x3  = 0:(1/fs3):(n3/fs3)-1/fs3;
      a3 = ao(x3, randn(n3,1), fs3);
      a1.setT0(a1.t0 + time('14:00:00'));
      a2.setT0(a2.t0 + time('14:00:00'));
      a3.setT0(a3.t0 + time('14:00:00'));
      amat = [a1, a2, a3; a3, a1, a2];
      st  = '14:00:25';
      et  = '14:01:15';
      pl  = plist('start_time', st, 'end_time', et);
      out = split(amat, pl);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the number of elements in 'out' is the same as in
    %    'amat' times numbers of intervals
    % 2) Check that each output AO contains the correct data.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check we have the correct number of outputs
      if numel(out) ~= numel(amat), atest = false; end
      % Check each output
      for kk=1:2:numel(out)
        %%%% Check Interval '14:00:25' .. '14:01:15'
        x = amat(kk).x + amat(kk).t0.double;
        y = amat(kk).y;
        % Comput start/end time
        ts = time(st).double;
        te = time(et).double;
        idx = find(x >= ts & x < te);
        % Normalize out data
        ox = out(kk).x + out(kk).t0.double;
        oy = out(kk).y;
        % Check data
        if ~isequal(ox, x(idx)), atest = false; end
        if ~isequal(oy, y(idx)), atest = false; end
      end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_03

  %% UTP_04

  % <TestDescription>
  %
  % Tests that the split method works with a list of AOs as input.
  %
  % </TestDescription>
  function result = utp_04

    % <SyntaxDescription>
    %
    % Tests that the split method works with a list of AOs as input.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      n1  = 300;
      fs1 = 3;
      x1  = 0:(1/fs1):(n1/fs1)-1/fs1;
      a1 = ao(x1, randn(n1,1), fs1);
      n2  = 100;
      fs2 = 1;
      x2  = 0:(1/fs2):(n2/fs2)-1/fs2;
      a2 = ao(x2, randn(n2,1), fs2);
      n3  = 100;
      fs3 = .3;
      x3  = 0:(1/fs3):(n3/fs3)-1/fs3;
      a3 = ao(x3, randn(n3,1), fs3);
      a1.setT0(a1.t0 + time('14:00:00'));
      a2.setT0(a2.t0 + time('14:00:00'));
      a3.setT0(a3.t0 + time('14:00:00'));
      st  = '14:00:25';
      et  = '14:01:15';
      pl  = plist('start_time', st, 'end_time', et);
      out = split(a1, a2, a3, pl);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the number of elements in 'out' is the same as in
    %    'amat' times numbers of intervals
    % 2) Check that each output AO contains the correct data.
    %
    % </AlgoDescription>

    atest = true;
    aoin  = [a1, a2, a3];
    if stest
      % <AlgoCode>
      % Check we have the correct number of outputs
      if numel(out) ~= numel(aoin), atest = false; end
      % Check each output
      for kk=1:2:numel(out)
        %%%% Check Interval '14:00:25' .. '14:01:15'
        x = aoin(kk).x + aoin(kk).t0.double;
        y = aoin(kk).y;
        % Comput start/end time
        ts = time(st).double;
        te = time(et).double;
        idx = find(x >= ts & x < te);
        % Normalize out data
        ox = out(kk).x + out(kk).t0.double;
        oy = out(kk).y;
        % Check data
        if ~isequal(ox, x(idx)), atest = false; end
        if ~isequal(oy, y(idx)), atest = false; end
      end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_04

  %% UTP_05

  % <TestDescription>
  %
  % Tests that the split method works with a mix of different shaped AOs as
  % input.
  %
  % </TestDescription>
  function result = utp_05

    % <SyntaxDescription>
    %
    % Tests that the split method works with a mix of different shaped AOs as
    % input.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      n1  = 300;
      fs1 = 3;
      x1  = 0:(1/fs1):(n1/fs1)-1/fs1;
      a1 = ao(x1, randn(n1,1), fs1);
      n2  = 100;
      fs2 = 1;
      x2  = 0:(1/fs2):(n2/fs2)-1/fs2;
      a2 = ao(x2, randn(n2,1), fs2);
      n3  = 100;
      fs3 = .3;
      x3  = 5000:(1/fs3):5000+((n3/fs3)-1/fs3);
      a3 = ao(x3, randn(n3,1), fs3);
      a1.setT0(a1.t0 + time('14:00:00'));
      a2.setT0(a2.t0 + time('14:00:00'));
      a3.setT0(a3.t0 + time('14:00:00'));
      st  = '14:00:25';
      et  = '14:01:15';
      pl  = plist('start_time', st, 'end_time', et);
      out = split(a1, [a2;a1], a3, pl);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the number of elements in 'out' is the same as in
    %    'amat' times numbers of intervals
    % 2) Check that each output AO contains the correct data.
    %
    % </AlgoDescription>

    atest = true;
    aoin  = [a1, a2, a1, a3];
    if stest
      % <AlgoCode>
      % Check we have the correct number of outputs
      if numel(out) ~= numel(aoin), atest = false; end
      % Check each output
      for kk=1:2:numel(out)
        %%%% Check Interval '14:00:25' .. '14:01:15'
        x = aoin(kk).x + aoin(kk).t0.double;
        y = aoin(kk).y;
        % Comput start/end time
        ts = time(st).double;
        te = time(et).double;
        idx = find(x >= ts & x < te);
        % Normalize out data
        ox = out(kk).x + out(kk).t0.double;
        oy = out(kk).y;
        % Check data
        if ~isequal(ox, x(idx)), atest = false; end
        if ~isequal(oy, y(idx)), atest = false; end
      end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_05

  %% UTP_06

  % <TestDescription>
  %
  % Tests that the split method properly applies history.
  %
  % </TestDescription>
  function result = utp_06

    % <SyntaxDescription>
    %
    % Test that the result of applying the split method can be processed back.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      n1  = 100;
      fs1 = .3;
      x1  = 5000:1/fs1:5000+((n1/fs1)-1/fs1);
      a1 = ao(x1, randn(n1,1), fs1);
      a1.setT0(a1.t0 + time('14:00:00'));
      st  = '14:00:25';
      et  = '14:01:15';
      pl  = plist('start_time', st, 'end_time', et);
      out  = split(a1, pl);
      mout = rebuild(out);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the last entry in the history of 'out' corresponds to
    %    'split'.
    % 2) Check that the re-built object is the same object as the input.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check the last step in the history of 'out'
      if ~strcmp(out.hist.methodInfo.mname, 'split'), atest = false; end
      % The rebuilt object must be the same as 'out'
      if ~eq(mout, out, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_06

  %% UTP_07

  % <TestDescription>
  %
  % The split method can not modify the input AO.
  %
  % </TestDescription>
  function result = utp_07

    % <SyntaxDescription>
    %
    % The split method can not modify the input AO.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      a1 = ao(5000:5099, randn(100,1), 1);
      a1.setT0(a1.t0 + time('14:00:00'));
      st  = '14:00:25';
      et  = '14:01:15';
      pl  = plist('start_time', st, 'end_time', et);
      amodi = ao(at1);
      aeq   = ao(at1);
      out = aeq.split(pl);
      amodi.split(pl);
      stest = false;
      % </SyntaxCode>
    catch
      stest = true;
    end

    % <AlgoDescription>
    %
    % 1) Nothind to do.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_07

  %% UTP_08

  % <TestDescription>
  %
  % Test the shape of the output.
  %
  % </TestDescription>
  function result = utp_08

    % <SyntaxDescription>
    %
    % Test that the split method keeps the data shape of the input object.
    % The input AO must be an AO with row data and an AO with column data.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      a1 = ao(5000:5099, randn(100,1), 1);
      a2 = ao(5000:5099, randn(100,1).', 1);
      a1.setT0(a1.t0 + time('14:00:00'));
      a2.setT0(a1.t0 + time('14:00:00'));
      st  = '14:00:25';
      et  = '14:01:15';
      pl  = plist('start_time', st, 'end_time', et);
      out1 = split(a1, pl);
      out2 = split(a2, pl);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the shape of the data doesn't change.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check the shape of the output data
      if size(out1.data.y,1) == 1, atest = false; end
      if size(out2.data.y,2) == 1, atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_08

  %% UTP_09

  % <TestDescription>
  %
  % Check that the split method pass back the output objects to a list of
  % output variables or to a single variable.
  %
  % </TestDescription>
  function result = utp_09

    % <SyntaxDescription>
    %
    % Call the method with a list of output variables and with a single
    % output variable. Additionaly check that the rebuild method works on
    % the output.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      a1 = ao(5000:5099, randn(100,1), 1);
      a2 = ao(5000:5099, randn(100,1).', 1);
      a1.setT0(a1.t0 + time('14:00:00'));
      a2.setT0(a1.t0 + time('14:00:00'));
      st  = '14:00:25';
      et  = '14:01:15';
      pl  = plist('start_time', st, 'end_time', et);
      [o1, o2] = split(a1, a2, pl);
      o3  = split(a1, a2, pl);
      mout1 = rebuild(o1);
      mout2 = rebuild(o2);
      mout3 = rebuild(o3);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check that the output contains the right number of objects
    % 2) Check that the 'rebuild' method produces the same object as 'out'.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check the number of outputs
      if numel(o1) ~=1, atest = false; end
      if numel(o2) ~=1, atest = false; end
      if numel(o3) ~=2, atest = false; end
      % Check the rebuilding of the object
      if ~eq(o1, mout1, ple2), atest = false; end
      if ~eq(o2, mout2, ple2), atest = false; end
      if ~eq(o3, mout3, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_09

  %% UTP_10

  % <TestDescription>
  %
  % Check that the split method can handle AO which have a collaped x-axis.
  %
  % </TestDescription>
  function result = utp_10

    % <SyntaxDescription>
    %
    % Check that the split method can handle AO which have a collaped x-axis.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      plao = plist('fs', 30, 'nsecs', 30, 'waveform', 'sine wave', 'f', 1.23, 'phi', 30);
      a1   = ao(plao);
      a1.setT0(a1.t0 + time('14:00:00'));
      st  = '14:00:07';
      et  = '14:00:17';
      pl  = plist('start_time', st, 'end_time', et);
      out = split(a1, pl);
      mout = rebuild(out);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check the number of outputs
    % 2) Check the output
    % 3) Check that the 'rebuild' method produces the same object as 'out'.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check the number of outputs
      if numel(out) ~= 1, atest = false; end
      % Check the output
      x = a1.x + a1.t0.double;
      y = a1.y;
      % Comput start/end time
      ts = time(st).double;
      te = time(et).double;
      idx = find(x >= ts & x < te);
      % Normalize out data
      ox = out.x + out.t0.double;
      oy = out.y;
      % Check data
      if ~isequal(ox, x(idx)), atest = false; end
      if ~isequal(oy, y(idx)), atest = false; end
      % Check the rebuilding of the object
      if ~eq(out, mout, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_10


  %% UTP_12

  % <TestDescription>
  %
  % Check that the split method uses the key-words: start_time and duration
  %
  % </TestDescription>
  function result = utp_12

    % <SyntaxDescription>
    %
    % Check that the split method uses the key-words: start_time and
    % duration
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      a1 = ao(5000:5099, randn(100,1), 1);
      a1.setT0(a1.t0 + time('14:00:00'));
      st  = format(time('14:01:00')+5000, 'HH:MM:SS');
      du  = '00:00:10';
      plc  = plist('start_time', st, 'duration', du);
      plo  = plist('start_time', time(st), 'duration', time(du));
      outc = split(a1, plc);
      outo = split(a1, plo);
      moutc = rebuild(outc);
      mouto = rebuild(outo);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check the number of outputs
    % 2) Check the output
    % 3) Check that the 'rebuild' method produces the same object as 'out'.
    %
    % </AlgoDescription>

    atest = true;
    TOL   = 1e-11;
    if stest
      % <AlgoCode>
      % Check the number of outputs
      if numel(outc) ~= 1, atest = false; end
      if numel(outo) ~= 1, atest = false; end
      % Check the output
      x = a1.x + a1.t0.double;
      y = a1.y;
      % Comput start/end time
      ts = time(st).double;
      te = ts + time(du).double;
      idx = find(x >= ts & x < te);
      % Normalize out data
      oxc = outc.x + outc.t0.double;
      oyc = outc.y;
      oxo = outo.x + outo.t0.double;
      oyo = outo.y;
      % Check data
      if any(abs(oxc - x(idx)) > TOL), atest = false; end
      if ~isequal(oyc, y(idx)), atest = false; end
      if any(abs(oxo - x(idx)) > TOL), atest = false; end
      if ~isequal(oyo, y(idx)), atest = false; end
      % Check the rebuilding of the object
      if ~eq(outc, moutc, ple2), atest = false; end
      if ~eq(outo, mouto, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_12

  %% UTP_13

  % <TestDescription>
  %
  % Check that the split method uses the key-words: timespan
  %
  % </TestDescription>
  function result = utp_13

    % <SyntaxDescription>
    %
    % Check that the split method uses the key-words: timespan
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      a1 = ao(5000:5099, randn(100,1), 1);
      a1.setT0(a1.t0 + time('14:00:00'));
      ts   = timespan(time('14:00:20')+5e3, time('14:00:50')+5e3);
      pl   = plist('timespan', ts);
      out = split(a1, pl);
      mout = rebuild(out);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check the number of outputs
    % 2) Check the output
    % 3) Check that the 'rebuild' method produces the same object as 'out'.
    %
    % </AlgoDescription>

    atest = true;
    TOL   = 1e-11;
    if stest
      % <AlgoCode>
      % Check the number of outputs
      if numel(out) ~= 1, atest = false; end
      % Check the output
      x = a1.x + a1.t0.double;
      y = a1.y;
      % Comput start/end time
      ts = double(time('14:00:20')+5e3);
      te = double(time('14:00:50')+5e3);
      idx = find(x >= ts & x < te);
      % Normalize out data
      ox = out.x + out.t0.double;
      oy = out.y;
      % Check data
      if any(abs(ox - x(idx)) > TOL), atest = false; end
      if ~isequal(oy, y(idx)), atest = false; end
      % Check the rebuilding of the object
      if ~eq(out, mout, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_13

  %% UTP_14

  % <TestDescription>
  %
  % Check that the split method uses the key-words: start_time and end_time
  %
  % </TestDescription>
  function result = utp_14

    % <SyntaxDescription>
    %
    % Check that the split method uses the key-words: start_time and end_time
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      a1 = ao(plist('xvals', '0:199', 'yvals', 'randn(200,1)', 'fs', 1, 't0', '14:00:00 2009-02-17'));
      st  = '14:01:40 2009-02-17';
      et  = '14:03:20 17-02-2009';
      plc  = plist('start_time', st, 'end_time', et);
      plo  = plist('start_time', time(st), 'end_time', time(et));
      outc = split(a1, plc);
      outo = split(a1, plo);
      moutc = rebuild(outc);
      mouto = rebuild(outo);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check the number of outputs
    % 2) Check the output
    % 3) Check that the 'rebuild' method produces the same object as 'out'.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
      % Check the number of outputs
      if numel(outc) ~= 1, atest = false; end
      if numel(outo) ~= 1, atest = false; end
      % Check the output
      x = a1.x + a1.t0.double;
      y = a1.y;
      % Comput start/end time
      ts = time(st).double;
      te = time(et).double;
      idx = find(x >= ts & x < te);
      % Normalize out data
      oxc = outc.x + outc.t0.double;
      oyc = outc.y;
      oxo = outo.x + outo.t0.double;
      oyo = outo.y;
      % Check data
      if ~isequal(oxc, x(idx)), atest = false; end
      if ~isequal(oyc, y(idx)), atest = false; end
      if ~isequal(oxo, x(idx)), atest = false; end
      if ~isequal(oyo, y(idx)), atest = false; end
      % Check the rebuilding of the object
      if ~eq(outc, moutc, ple2), atest = false; end
      if ~eq(outo, mouto, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_14

  %% UTP_15

  % <TestDescription>
  %
  % Check that the split method works with notequal sampled data.
  % Check that the interval can be passed via two time objects.
  %
  % </TestDescription>
  function result = utp_15

    % <SyntaxDescription>
    %
    % Check that the split method works with notequal sampled data.
    % Check that the interval can be passed via two time objects.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      x = [1:1018 1020:1999 2001:3000 3002:6500 6502:7000 7002:10000];
      y = randn(1e4,1);
      y = y(x); % Use the x values as an index
      a1 = ao(plist('xvals', x, 'yvals', y, 'fs', 1, 't0', '2009-11-03 18:00:00.000', 'yunits', 'N'));

      start_time = time('2009-11-03 18:10:00.000');
      end_time = time('2009-11-03 18:20:00.000');

      pl1   = plist(...
        'start_time', start_time, ...
        'end_time', end_time);
      out1  = split(a1, pl1);
      mout1 = rebuild(out1);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check the outputs
    % 2) Check that the 'rebuild' method produces the same object as 'out'.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
            
      % Check number of seconds
      dt = double(end_time - start_time);
      if out1.nsecs ~= dt, atest = false; end
      % Check t0
      dt0 = double(out1.t0 - a1.t0);
      if dt0 ~= 0, atest = false; end
      % Check the rebuilding of the object
      if ~eq(out1, mout1, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_15
  
  
  %% UTP_16

  % <TestDescription>
  %
  % Check that the split method works with notequal sampled data.
  % Check that the interval can be passed via two time strings.
  %
  % </TestDescription>
  function result = utp_16

    % <SyntaxDescription>
    %
    % Check that the split method works with notequal sampled data.
    % Check that the interval can be passed via two time strings.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      x = [1:1018 1020:1999 2001:3000 3002:6500 6502:7000 7002:10000];
      y = randn(1e5, 1);
      y = y(x); % Use the x values as an index
      a1 = ao(plist('xvals', x, 'yvals', y, 'fs', 1, 't0', '2009-11-03 18:00:00.000', 'yunits', 'N'));

      start_time = '2009-11-03 18:10:00.000';
      end_time = '2009-11-03 18:20:00.000';

      pl1   = plist(...
        'start_time', start_time, ...
        'end_time',   end_time);
      out1  = split(a1, pl1);
      mout1 = rebuild(out1);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check the output
    % 2) Check that the 'rebuild' method produces the same object as 'out'.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
            
      % Check number of seconds
      dt = double(time(end_time) - time(start_time));
      if out1.nsecs ~= dt, atest = false; end
      % Check t0
      dt0 = double(out1.t0 - a1.t0);
      if dt0 ~= 0, atest = false; end
      % Check the rebuilding of the object
      if ~eq(out1, mout1, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_16
  
  %% UTP_17

  % <TestDescription>
  %
  % Check that the split method works with notequal sampled data.
  % Check that the interval can be passed via one timespan object.
  %
  % </TestDescription>
  function result = utp_17

    % <SyntaxDescription>
    %
    % Check that the split method works with notequal sampled data.
    % Check that the interval can be passed via one timespan object.
    %
    % </SyntaxDescription>

    try
      % <SyntaxCode>
      x = [1:1018 1020:1999 2001:3000 3002:6500 6502:7000 7002:10000];
      y = randn(1e5, 1);
      y = y(x); % Use the x values as an index
      a1 = ao(plist('xvals', x, 'yvals', y, 'fs', 1, 't0', '2009-11-03 18:00:00.000', 'yunits', 'N'));

      start_time = '2009-11-03 18:10:00.000';
      end_time = '2009-11-03 18:15:00.000';

      time_range = timespan(start_time, end_time);
      
      pl1   = plist(...
        'timespan', time_range);
      out1  = split(a1, pl1);
      mout1 = rebuild(out1);
      % </SyntaxCode>
      stest = true;
    catch err
      disp(err.message)
      stest = false;
    end

    % <AlgoDescription>
    %
    % 1) Check the output
    % 2) Check that the 'rebuild' method produces the same object as 'out'.
    %
    % </AlgoDescription>

    atest = true;
    if stest
      % <AlgoCode>
            
      % Check number of seconds
      dt = double(time_range.endT - time_range.startT);
      if out1.nsecs ~= dt, atest = false; end
      % Check t0
      dt0 = double(out1.t0 - a1.t0);
      if dt0 ~= 0, atest = false; end
      % Check the rebuilding of the object
      if ~eq(out1, mout1, ple2), atest = false; end
      % </AlgoCode>
    else
      atest = false;
    end

    % Return a result structure
    result = utp_prepare_result(atest, stest, dbstack, mfilename);
  end % END UTP_17
  
end