/usr/share/octave/packages/signal-1.3.0/upsamplefill.m is in octave-signal 1.3.0-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 | ## Copyright (C) 2013 - Juan Pablo Carbajal
##
## This progrm is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or
## (at your option) any later version.
##
## This program 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. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program. If not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {@var{y} =} upsamplefill (@var{x}, @var{v})
## @deftypefnx {Function File} {@var{y} =} upsamplefill (@dots{}, @var{copy})
## Upsamples a vector interleaving given values or copies of the vector elements.
##
## The values in the vector @var{v} are placed between the elements of @var{x}.
##
## If the optional argument @var{copy} is @var{true} then @var{v} should be a
## scalar and each value in @var{x} are repeat @var{v} times.
##
## Example:
## @example
## @group
## upsamplefill (eye (2), 2, true)
## @result{} 1 0
## 1 0
## 1 0
## 0 1
## 0 1
## 0 1
## upsamplefill (eye (2), [-1 -1 -1])
## @result{} 1 0
## -1 -1
## -1 -1
## -1 -1
## 0 1
## -1 -1
## -1 -1
## -1 -1
## @end group
## @end example
##
## @seealso{upsample}
## @end deftypefn
## Author: Juan Pablo Carbajal <ajuanpi+dev@gmail.com>
function y = upsamplefill (x, v, copy=false)
if nargin<2
print_usage;
end
[nr,nc] = size (x);
if copy
if any ([nr,nc]==1)
y = kron (x(:), ones(v+1,1));
if nr == 1
y = y.';
endif
else
y = kron (x, ones(v+1,1));
endif
return
else
% Assumes 'v' row or column vector
n = length(v) + 1;
N = n*nr;
if any ([nr,nc]==1)
N = N*nc;
idx = 1:n:N;
idx_c = setdiff (1:N, 1:n:N);
y = zeros (N,1);
y(idx) = x;
y(idx_c) = repmat (v(:), max(nr,nc), 1);
if nr == 1
y = y.';
endif
else
idx = 1:n:N;
idx_c = setdiff(1:N,1:n:N);
y = zeros (N,nc);
y(idx,:) = x;
y(idx_c,:) = repmat (v(:), nr, nc);
endif
endif
endfunction
%!assert(upsamplefill([1,3,5],2),[1,2,3,2,5,2]);
%!assert(upsamplefill([1;3;5],2),[1;2;3;2;5;2]);
%!assert(upsamplefill([1,2,5],[2 -2]),[1,2,-2,2,2,-2,5,2,-2]);
%!assert(upsamplefill(eye(2),2,true),[1,0;1,0;1,0;0,1;0,1;0,1]);
%!assert(upsamplefill([1,3,5],2,true),[1,1,1,3,3,3,5,5,5]);
%!assert(upsamplefill([1;3;5],2,true),[1;1;1;3;3;3;;5;5;5]);
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