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
|
// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
function x = %hm_stdev(m, d, ms)
if argn(2) < 3 then
ms = %f
end
if argn(2) == 3 & type(ms)~=1 & typeof(ms) ~= "hypermat" then
error(msprintf(_("%s: Wrong type for input argument #%d: A real matrix expected.\n"),"stdev",3));
end
if argn(2) == 1 | d == "*" then
if argn(2) == 3 then
x = stdev(m.entries, "*", ms);
else
x = stdev(m.entries, "*");
end
return
elseif d == "r" then
d = 1;
elseif d == "c" then
d = 2;
end
dims = double(m.dims);
if d > size(m,d) then
x = zeros(m);
return
end
N = size(dims, "*");
p1 = prod(dims(1:d-1));// step to build one vector on which stdev is applied
p2 = p1*dims(d);//step for beginning of next vectors
ind = (0:p1:p2-1)';// selection for building one vector
deb = (1:p1);
I = ind*ones(deb)+ones(ind)*deb;
ind = (0:p2:prod(dims)-1);
I = ones(ind).*.I+ind.*.ones(I);
if argn(2) == 3 then
if isscalar(ms) then
x = stdev(matrix(m.entries(I),dims(d),-1), 1, ms);
else
x = stdev(matrix(m.entries(I),dims(d),-1), 1, ms.entries');
end
else
x = stdev(matrix(m.entries(I),dims(d),-1), 1);
end
dims(d) = 1;
if d == N then
dims = dims(1:$)
else
dims(d) = 1
end
if size(dims, "*") == 2 then
x = matrix(x, dims(1), dims(2))
else
x = hypermat(dims, x)
end
endfunction
|
